Intelligent and efficient small-scale hydroelectric power generation device

Abstract

This invention relates to the field of water circulation residual pressure power generation equipment technology, specifically providing an intelligent and efficient small hydropower generation device, including a turbine body and a generator. The turbine body includes a volute and an impeller. The impeller is rotatably disposed within the volute, and a rotating ring is rotatably disposed within the volute. A pair of clamping plates are elastically slidably connected to the rotating ring. The pair of clamping plates elastically abut against both ends of the blades, and cooperate with the rotating ring to abut against the blade ends, forming a double fixation of end face clamping and edge limiting. Even if the thin blades expand and contract due to changes in circulating water temperature, the deformation can be limited by the clamping plates, avoiding contact and wear with the inner wall of the volute during high-speed rotation, extending the service life of the blades, while retaining the advantage of low liquid resistance of thin blades, improving the overall operating stability and power generation efficiency of the generator and generator set.

Description

Technical Field

[0001] This invention relates to the field of water circulation residual pressure power generation equipment technology, and in particular to intelligent, efficient, small-scale hydropower generation equipment. Background Technology

[0002] In industrial circulating water systems (such as power plant condenser circulating water, chemical process circulating water, and central air conditioning cooling water systems), to meet the water supply needs of long-distance transportation, high-rise buildings, or high-resistance equipment, the circulating water pumps are usually designed with a head based on maximum operating conditions. However, in actual operation, the actual resistance of the system is often lower than the pump's design head, resulting in a large amount of residual water pressure (i.e., residual pressure) in the pipeline. Therefore, generators and generator sets are installed in the pipeline to form a residual pressure power generation device, thereby converting the residual pressure energy in the circulating water pipeline into electrical energy, realizing energy recovery, and ensuring the stable operation of the circulating water system and the generator and generator set.

[0003] In the technology of residual pressure power generation in circulating water systems, several problems exist when using the excess pressure at the return water end to drive the turbine blades to rotate and drive the generator and generator set to generate electricity: First, industrial circulating water usually has a certain temperature, and the thin blades designed to reduce water flow resistance in industrial applications are prone to deformation due to thermal expansion and contraction. Under high-speed rotation, they may come into contact with the lower ring, causing blade wear and affecting the long-term reliable operation of the generator set; Second, the circulating water flow rate varies under different water pressure conditions, and the change in flow velocity when flowing through the power generation equipment will cause blade edge vibration. Long-term operation can easily lead to irreversible deformation of the blades, reducing the power generation efficiency and operational stability of the generator and generator set. Summary of the Invention

[0004] Therefore, it is necessary to provide intelligent, efficient, and small-scale hydropower generation equipment to address the problems of blade wear and vibration in current power generation equipment.

[0005] The above objectives are achieved through the following technical solutions: Intelligent and efficient small-scale hydropower generation equipment, including: The turbine body and the generator are provided, wherein the turbine body is located on a branch of the fluid delivery pipeline and the generator is connected to the turbine body. The turbine body includes a volute and an impeller. The impeller is rotatably disposed within the volute, and a rotating ring is rotatably disposed within the volute, the rotating ring abutting against the blade tip of the impeller. A clamping plate is elastically slidably disposed on the rotating ring. The clamping plates are arranged in pairs, and the paired clamping plates clamp the two end faces of the impeller blades.

[0006] Furthermore, a circumferential groove is provided inside the rotating ring, the circumferential groove extends along the circumference of the rotating ring, a push rod is slidably disposed in the circumferential groove, one end of the push rod extending out of the rotating ring is connected to the clamping plate, and the other end of the push rod is connected to a first elastic element, the first elastic element is connected in the circumferential groove, the first elastic element makes the clamping plate tend to clamp the impeller blade.

[0007] Furthermore, the rotating ring is provided with a first adjustment component, which is used to adjust the clamping force of the clamping plate on the impeller blades. The clamping force is positively correlated with the rotational speed of the impeller.

[0008] Furthermore, the first adjustment component includes a centrifugal block, a guide rod, and a connecting block. The centrifugal block is radially elastically slidably disposed within the rotating ring. An inclined surface is provided on the centrifugal block. The guide rod is slidably connected to the push rod. The end of the guide rod near the inclined surface slides against the inclined surface. The connecting block is fixedly connected to the guide rod. The end of the connecting block away from the centrifugal block is connected to the first elastic element. The inclined surface is configured to push the guide rod to compress the first elastic element when the centrifugal block moves radially outward along the rotating ring.

[0009] Furthermore, a radial groove is provided inside the rotating ring, the centrifugal block is slidably disposed in the radial groove, and a second elastic element is provided between the centrifugal block and the radial groove.

[0010] Furthermore, a piston plate is coaxially and fixedly mounted on one end of the push rod located within the circumferential groove. The piston plate divides the circumferential groove into two sealed cavities. A damping hole is provided on the piston plate, and a second adjustment component is provided on the piston plate. The second adjustment component is used to adjust the opening size of the damping hole. The opening size of the damping hole is negatively correlated with the rotational speed of the impeller.

[0011] Furthermore, the second adjusting component includes an adjusting rod and a third elastic element. The adjusting rod slides radially along the damping hole and passes through the damping hole. A through hole is provided on the adjusting rod, and the diameter of the through hole is the same as the diameter of the damping hole. The third elastic element is connected to the adjusting rod. One end of the adjusting rod slides against the outer periphery of the guide rod. A tapered section is provided on the outer periphery of the guide rod. The tapered section is configured to push the adjusting rod to move to reduce the opening size of the damping hole when the guide rod moves and compresses the first elastic element.

[0012] Furthermore, the connecting block is provided with air holes.

[0013] Furthermore, a ball joint is fixedly provided on one end of the push rod extending from the rotating ring. A connecting ball is hinged inside the ball joint, and the connecting ball is fixedly connected to the clamping plate. The blades of the impeller are rotatably connected to the impeller and are inclined. A third adjustment component is provided inside the impeller. The third adjustment component is used to adjust the inclination of the impeller blades. The inclination of the blades is positively correlated with the flow rate of the liquid inside the branch of the infusion pipeline.

[0014] Furthermore, the third adjustment component includes a drive motor, a first bevel gear, and a second bevel gear. The drive motor is fixedly installed inside the impeller. The first bevel gear is coaxial and fixedly installed on the shaft of the drive motor. The second bevel gear is coaxial and fixedly installed on the shaft of the blade. The first bevel gear meshes with the second bevel gear.

[0015] The beneficial effects of this invention are: This invention uses a rotating ring and a pair of clamping plates to elastically abut against both ends of the blade. The rotating ring abuts against the blade tip, forming a dual fixation of end face clamping and edge limiting. Even if the thin blade expands and contracts due to changes in circulating water temperature, the clamping plates can limit its deformation, preventing contact and wear with the inner wall of the volute during high-speed rotation, thus extending the blade's service life. At the same time, it retains the advantage of low liquid resistance of thin blades, providing a highly reliable core component for the manufacture of generators and generator sets.

[0016] This invention provides a first adjustment component on the rotating ring. The first adjustment component dynamically adjusts the clamping force according to the impeller speed: the faster the rotating ring rotates, the more the centrifugal block moves radially under centrifugal force, pushing the guide rod through the inclined plane to compress the first elastic element, and the clamping force increases synchronously, ensuring stable operation of the blade under high load; when the speed decreases, the clamping force automatically decreases, avoiding damage to the blade by rigid constraints, and ensuring long-term stable power generation of the generator and generator set.

[0017] This invention provides a second adjustment component within the rotating ring, which is linked to the impeller speed: the faster the speed, the tapered section of the guide rod pushes the adjustment rod to reduce the opening of the damping orifice, increasing the resistance to push rod movement and suppressing high-frequency vibration of the blades; when the speed decreases, the damping orifice automatically opens, balancing stability and flexibility, and reducing vibration and noise of the generator and generator set.

[0018] This invention rotates blades onto an impeller and incorporates a third adjustment component. The third adjustment component adjusts the blade tilt angle according to the liquid flow rate: when the flow rate is high, the tilt angle is increased to reduce the angle between the blades and the liquid flow direction, thereby reducing the impact load; when the flow rate is low, the tilt angle is decreased to increase the force-bearing area, thereby increasing the impeller speed and power generation efficiency. This achieves efficient energy conversion under different flow conditions and improves the adaptability and power generation efficiency of generators and generator sets under varying operating conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an intelligent, efficient, small-scale hydropower generation device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the turbine main structure of an intelligent, efficient, small-scale hydropower generation device according to an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of the turbine body structure of an intelligent and efficient small hydropower generation device provided in one embodiment; Figure 4 for Figure 3 A left view of the turbine main body structure of an intelligent, efficient, small-scale hydropower generation device provided in one embodiment; Figure 5 for Figure 4 A cross-sectional view along the XX of the turbine body of a smart, efficient, small hydropower generation device provided in one embodiment; Figure 6 for Figure 5 A partially enlarged view of part A of the turbine body of a smart, efficient, small-scale hydropower generation device provided in one embodiment; Figure 7 for Figure 5 A partially enlarged view of part B, the turbine body of a smart, efficient, small-scale hydropower generation device provided in one embodiment; Figure 8 for Figure 5 A partially enlarged view of part C, the main turbine component of a smart, efficient, small-scale hydropower generation device provided in one embodiment; Figure 9 This is a schematic diagram of the rotating ring structure of an intelligent, efficient, small-scale hydropower generation device provided in an embodiment of the present invention; Figure 10 for Figure 9 A partially enlarged view of the rotating ring D portion of an intelligent, efficient, small-scale hydropower generation device provided in one embodiment; Figure 11 for Figure 9 Left view of the rotating ring of an intelligent and efficient small hydropower generation device provided in one embodiment; Figure 12 for Figure 11 A cross-sectional view along the YY axis of the rotating ring of an intelligent, efficient, small-scale hydropower generation device provided in one embodiment; Figure 13 for Figure 12 A partially enlarged view of the rotating ring E portion of an intelligent, efficient, small-scale hydropower generation device provided in one embodiment; Figure 14 for Figure 13 A partial enlarged view of the rotating ring F part of an intelligent and efficient small hydropower generation device provided in one embodiment; Figure 15 This is a schematic diagram of the structure of the first regulating component of the turbine body of an intelligent, efficient, small-scale hydropower generation device provided in an embodiment of the present invention.

[0020] in: 100. Turbine body; 110. Spiral casing; 111. Liquid inlet; 112. Liquid outlet; 120. Draft tube; 130. Impeller; 131. Blades; 140. Guide vanes; 200, Rotating ring; 210, Clamping plate; 220, Circumferential groove; 230, Push rod; 231, Ball joint block; 232, Connecting ball; 240, First elastic element; 250, Radial groove; 251, Guide groove; 260, Bearing; 300, centrifugal block; 310, inclined plane; 320, second elastic element; 330, guide block; 340, guide rod; 341, conical section; 350, connecting block; 351, air hole; 400, Piston plate; 410, Sealing cavity; 420, Damping hole; 430, Adjusting rod; 431, Through hole; 440, Third elastic element; 500. Drive motor; 510. First bevel gear; 520. Second bevel gear; 600. Infusion pipeline; 610. Branch line; 620. Butterfly valve; 700. Generator. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] The following reference Figures 1-15 This invention describes the intelligent, efficient, and small-scale hydropower generation equipment provided by the present invention.

[0025] This intelligent, high-efficiency, small-scale hydroelectric power generation device is suitable for generating electricity from residual pressure in circulating water systems. It includes a turbine main body 100 and a generator 700. The turbine main body 100 is located within a branch 610 of a liquid delivery pipeline 600. The generator 700 is connected to the turbine main body 100 and located outside the branch 610. A butterfly valve 620 is installed on the liquid delivery pipeline 600. When the butterfly valve 620 is closed, the liquid in the liquid delivery pipeline 600 enters the branch 610. As the liquid passes through the turbine main body 100, it drives the shaft of the generator 700 to rotate, thereby generating electricity. 100 includes a volute 110 and an impeller 130. The volute 110 is provided with an inlet 111 and an outlet 112. The volute 110 is connected to a branch 610 of the liquid delivery pipeline 600, and the inlet 111 of the volute 110 is connected to the branch 610 of the liquid delivery pipeline 600. A tailwater pipe 120 is coaxially connected to the outlet 112 of the volute 110. The other end of the tailwater pipe 120 is connected to the return water pipeline of the circulating water system (not shown in the figure). The circulating water after work flows back to the cooling tower (not shown in the figure) through the tailwater pipe 120. The volute 110 is also equipped with multiple movable guide vanes 140, which are located between the liquid inlet 111 and the impeller 130. The impeller 130 is rotatably connected inside the volute 110. The liquid in the branch 610 of the liquid delivery pipeline 600 enters the volute 110 through the liquid inlet 111, flows through the gaps between the multiple movable guide vanes 140, flows to the impeller 130 and flows through the blades 131 of the impeller 130. The liquid drives the blades 131 of the impeller 130 to rotate, thereby causing the impeller 130 to rotate. The impeller 130 is connected to the shaft of the generator 700, which in turn drives the generator 700 to generate electricity.

[0026] However, industrial circulating water usually has a certain temperature, and the blades 131 of the impeller 130 designed to reduce water flow resistance in industrial applications are very thin. They are prone to deformation due to thermal expansion and contraction. Under high-speed rotation, they may come into contact with the inner wall of the tailwater pipe 120 at the drain port 112 of the volute 110, causing wear on the blades 131. Furthermore, the flow rate of the circulating liquid varies under different water pressure conditions. Changes in the flow velocity when flowing through the blades 131 of the impeller 130 will cause vibration at the edge of the blades 131. Long-term operation can easily lead to irreversible deformation of the blades 131.

[0027] Based on this, the present invention includes a rotating ring 200 rotatably disposed inside the volute 110. The end face of the rotating ring 200 abuts against the end of the blade 131 of the impeller 130. A clamping plate 210 is elastically slidably disposed on the rotating ring 200. The clamping plates 210 are arranged in pairs, and the pairs of clamping plates 210 abut against the two end faces of the blade 131 of the impeller 130 respectively. Specifically, each blade 131 of the impeller 130 is clamped by at least one pair of clamping plates 210. In this embodiment, each blade 131 is clamped by two pairs of clamping plates 210. Furthermore, since the rotating ring 200 is rotatably connected inside the volute 110, when the impeller 130 rotates, it will carry… The rotating ring 200 rotates synchronously. At this time, multiple blades 131 are clamped on the rotating ring 200 by the clamping plate 210, which makes it less likely for multiple blades 131 to deform. This reduces the wear frequency between the blades 131 and the inner wall of the volute 110 (i.e., the inner wall of the tailwater pipe 120 on the drain port 112 of the volute 110), reduces the wear of the blades 131 of the impeller 130, and increases the service life of the blades 131 of the impeller 130. At the same time, since the paired clamping plates 210 are elastically slidably set on the rotating ring 200, the clamping plates 210 can also suppress the vibration of the blades 131 of the impeller 130 to a certain extent and reduce the deformation of the blade edges 131.

[0028] It should be noted that, through the above structure, the present invention achieves dual protection for the impeller 130 blades 131, which not only solves the wear problem caused by thermal expansion and contraction, but also eliminates the hidden danger of vibration deformation caused by flow velocity fluctuations, ensuring the long-term stable operation of the hydropower generation equipment under the complex working conditions of the circulating water system. At the same time, it maintains the ultra-thin design advantage of the blades 131, ensuring that the liquid resistance is always at a low level, improving the energy conversion efficiency of residual pressure power generation, and helping to maximize the energy-saving and carbon-reducing benefits of the circulating water system.

[0029] Specifically, in this invention, the clamping plate 210 is elastically slidably disposed on the rotating ring 200, such as... Figure 10 and Figure 13As shown, in this embodiment, a circumferential groove 220 is provided in the rotating ring 200. The circumferential groove 220 extends circumferentially along the rotating ring 200. A push rod 230 is slidably arranged in the circumferential groove 220. The push rod 230 can slide in the circumferential groove 220 along the extension direction of the circumferential groove 220. The circumferential groove 220 and the push rod 230 are also arranged in pairs. One end of the two push rods 230 extending out of the rotating ring 200 is connected to the clamping plate 210. The other end of the push rod 230 is connected to a first elastic element 240. The first elastic element 240 is connected in the circumferential groove 220. The first elastic element 240 pushes the push rod 230, causing the push rod 230 to push the clamping plate 210 to clamp the two end faces of the blade 131 of the impeller 130, that is, to make the clamping plate 210 have the tendency to clamp the blade 131 of the impeller 130.

[0030] It is understandable that pressure fluctuations within the infusion pipeline 600 cause changes in the liquid flow velocity. Different liquid flow velocities exert different forces on the blades 131 of the impeller 130. When the liquid flow velocity is high, the force on the blades 131 of the impeller 130 is greater, requiring increased clamping force to maintain the stability of the blades 131. Conversely, when the liquid flow velocity decreases, the force on the impeller 130 is smaller, allowing for a reduction in the clamping force of the clamping plate 210 on the blades 131 of the impeller 130. In this embodiment, a first adjustment component is provided on the rotating ring 200. The first adjustment component is used to adjust the clamping force of the clamping plate 210 on the blades 131 of the impeller 130. The clamping force is positively correlated with the rotation speed of the impeller 130. The faster the rotation speed of the impeller 130, the faster the liquid flows, and the greater the clamping force of the clamping plate 210 on the blades 131. The slower the rotation speed of the impeller 130, the slower the liquid flows, and the smaller the clamping force of the clamping plate 210 on the blades 131.

[0031] Specifically, in this embodiment, the first adjustment component includes a centrifugal block 300, a guide rod 340, and a connecting block 350. The centrifugal block 300 is radially elastically slidably disposed within the rotating ring 200. When the rotating ring 200 rotates at high speed, the centrifugal block 300 is subjected to centrifugal force. This centrifugal force allows the centrifugal block 300 to move radially away from the center of the rotating ring 200. The centrifugal block 300 is provided with inclined surfaces 310, which are also arranged in pairs, such as... Figure 13 and Figure 14As shown, the guide rod 340 is slidably connected to the push rod 230. One end of the guide rod 340 near the inclined surface 310 passes through the circumferential groove 220 and slidably abuts against the inclined surface 310. The other end of the guide rod 340 is inserted into the push rod 230. The connecting block 350 is fixedly mounted on the guide rod 340, and the end of the connecting block 350 away from the centrifugal block 300 is connected to the first elastic member 240. The other end of the connecting block 350 abuts against the end of the circumferential groove 220. The inclined surface 310 of the centrifugal block 300 is configured such that when the rotation speed of the rotating ring 200 increases, When the centrifugal block 300 moves radially outward along the rotating ring 200, it pushes the guide rod 340 to move. The connecting block 350 on the guide rod 340 pushes the first elastic element 240. Since one end of the first elastic element 240 is connected to the push rod 230 and cannot move, the other end of the first elastic element 240 is pushed by the connecting block 350. At this time, the first elastic element 240 is compressed. After the first elastic element 240 is compressed, the elastic force increases, thereby increasing the force of the first elastic element 240 pushing the clamping plate 210, and thus increasing the clamping force of the clamping plate 210.

[0032] More specifically, to facilitate the radial elastic sliding of the centrifuge block 300 within the rotating ring 200, a radial groove 250 is provided within the rotating ring 200 in this embodiment. The radial groove 250 is specifically positioned between adjacent pairs of circumferential grooves 220, extending radially along the rotating ring 200. The centrifuge block 300 is slidably positioned within the radial groove 250, and a second elastic element 320, also a compression spring, is provided between the centrifuge block 300 and the radial groove 250. The second elastic element 320 extends radially within the radial groove 250. With the rotating ring 200 radially arranged, one end of the second elastic member 320 is connected to the centrifugal block 300, and the other end of the second elastic member 320 is connected to the radial groove 250. At the same time, in order to ensure that the centrifugal block 300 slides along the extension direction of the radial groove 250, this embodiment provides a guide groove 251 extending along the length direction of the radial groove 250 in the radial groove 250, and a guide block 330 is provided on the centrifugal block 300. The guide block 330 is slidably arranged in the guide groove 251 to ensure that the centrifugal block 300 slides along the extension direction of the radial groove 250.

[0033] In a further embodiment, to further improve the clamping stability of the clamping plate 210 for the blades 131 of the impeller 130, a piston plate 400 is coaxially and fixedly mounted on one end of the push rod 230 located within the circumferential groove 220. The outer periphery of the piston plate 400 is slidably and sealingly connected to the inner wall of the circumferential groove 220, and the piston plate 400 divides the circumferential groove 220 into two sealing cavities 410. The two sealing cavities 410 contain gas, and a damping hole 42 is provided on the piston plate 400. The damping hole 420 has a relatively small diameter. The design of the damping hole 420 makes it more difficult for the push rod 230 to slide within the circumferential groove 220, thus applying a certain damping force to the push rod 230. This increases the stability of the clamping plate 210 in holding the blade 131 to a certain extent. Simultaneously, this embodiment also provides a second adjustment component on the piston plate 400. This second adjustment component is used to adjust the opening size of the damping hole 420, and the opening size of the damping hole 420 is negatively correlated with the rotational speed of the impeller 130. Relatedly, the faster the impeller 130 rotates, the faster the liquid flows. At this speed, the force on the blades 131 of the impeller 130 increases, making them more prone to vibration. Simultaneously, the opening of the damping orifice 420 decreases, making it more difficult for the push rod 230 to slide within the circumferential groove 220. This increases the damping force on the push rod 230, further increasing the difficulty of moving the clamping plate 210, thereby reducing the vibration frequency and amplitude of the blades 131. When the impeller 130 rotates faster... The slower the rotation speed of the impeller 130, the slower the flow speed of the liquid. At this time, the force on the blades 131 of the impeller 130 decreases. Compared with the state where the impeller 130 rotates at a faster speed, the slower the impeller 130 rotates, the smaller the vibration frequency and vibration amplitude of the blades 131. At this time, the opening of the damping hole 420 increases to reduce the damping force on the push rod 230. The clamping plate 210 can clamp the blades 131 of the impeller 130 under the action of the first elastic member 240 to provide a certain clamping force.

[0034] By setting a second adjustment component, the present invention allows for a larger opening of the damping orifice 420 under low flow rate and low speed conditions, and the clamping plate 210 clamps the blade 131 under the action of the first elastic element 240, thus avoiding damage to the blade 131 due to rigid constraints. Under high flow rate and high speed conditions, the opening of the damping orifice 420 is reduced, the moving resistance of the piston plate 400 is greatly increased, and the limiting effect of the clamping plate 210 on the blade 131 is significantly enhanced, which can effectively suppress the severe vibration and deformation of the blade 131.

[0035] Specifically, in this embodiment, the second adjustment component includes an adjustment rod 430 and a third elastic element 440, such as... Figure 13 and Figure 14As shown, the adjusting rod 430 slides radially along the damping hole 420 and passes through the damping hole 420. A through hole 431 is provided on the adjusting rod 430. The diameter of the through hole 431 is the same as the diameter of the damping hole 420. When the through hole 431 of the adjusting rod 430 and the damping hole 420 are aligned, the opening of the damping hole 420 is at its maximum. When the adjusting rod 430 slides radially along the damping hole 420, the through hole 431 and the damping hole 420 will block each other, and the opening of the damping hole 420 will gradually decrease. To enable the adjusting rod 430 to slide radially along the damping hole 420, in this embodiment, a tapered section 341 is provided on the outer periphery of the guide rod 340, and a third elastic element 440 is connected to the adjusting rod 430. The third elastic element 440 is also a compression spring. The tapered section 341 on the outer periphery of the guide rod 340 is configured to push the adjusting rod 430 to move when the guide rod 340 slides within the push rod 230 and the guide rod 340 compresses the first elastic element 240, thereby causing the through hole 431 on the adjusting rod 430 to interact with the damping hole 420. The damping holes 420 block each other to reduce the opening size of the damping holes 420. At this time, the adjusting rod 430 compresses the third elastic element 440. When the rotation speed of the impeller 130 decreases, the second elastic element 320 pushes the centrifugal block 300 to gradually return to its original position. At this time, the conical section 341 on the guide rod 340 gradually moves away from the adjusting rod 430. Under the action of the third elastic element 440, the adjusting rod 430 gradually returns to its original position, and the through hole 431 and the damping hole 420 gradually align, so that the opening size of the damping hole 420 also gradually increases.

[0036] It should be noted that, since the piston plate 400 in this embodiment divides the circumferential groove 220 into two sealing cavities 410, in order to avoid affecting the movement of the guide rod 340, an air hole 351 is provided on the connecting block 350 (to balance the air pressure of the sealing cavity 410). The air hole 351 allows gas to pass through, thereby preventing the sealing cavity 410 from affecting the guide rod 340 and driving the connecting block 350 to move.

[0037] In a further embodiment, since the liquid flow rate inside the infusion pipeline 600 changes in real time, when the liquid flow rate is low, the liquid drives the impeller 130 to rotate slowly, resulting in low power generation efficiency of the generator 700. When the liquid flow rate is high, the liquid has a greater impact force on the blades 131 of the impeller 130, affecting the service life of the impeller 130. Therefore, the present invention rotates the blades 131 on the impeller 130 so that the blades 131 can tilt. Adjusting the tilt of the blades 131 can adapt to different liquid flow rates.

[0038] Specifically, in this embodiment, a ball joint block 231 is fixedly provided on one end of the push rod 230 extending out of the rotating ring 200. A connecting ball 232 is hinged inside the ball joint block 231. The connecting ball 232 is fixedly connected to the clamping plate 210, so that the clamping plate 210 is ball-jointed on the push rod 230, and the clamping plate 210 can clamp blades 131 with different inclination degrees. At the same time, a third adjustment component is provided inside the impeller 130. The third adjustment component is used to adjust the inclination degree of the blades 131 of the impeller 130. The inclination degree of the blades 131 is positively correlated with the liquid flow rate inside the branch 610 of the infusion pipeline 600. When the liquid flow rate is large, the tilt of the blade 131 is increased, which reduces the angle between the blade 131 and the liquid flow direction, thereby reducing the impact force of the liquid on the blade 131. When the liquid flow rate is small, the tilt of the blade 131 is decreased, which increases the angle between the blade 131 and the liquid flow direction, making it easier for the liquid to drive the impeller 130 to rotate, thereby increasing the rotation speed of the impeller 130.

[0039] More specifically, the third adjustment component in this embodiment includes a drive motor 500, a first bevel gear 510, and a second bevel gear 520, such as... Figure 8 As shown, the drive motor 500 is fixedly installed inside the impeller 130. The shaft of the drive motor 500 is coaxial with and fixedly connected to the first bevel gear 510. The second bevel gear 520 is coaxial with and fixedly connected to the shaft of the blade 131. The first bevel gear 510 and the second bevel gear 520 mesh. When it is necessary to adjust the tilt of the blade 131, the drive motor 500 is started. The drive motor 500 drives the first bevel gear 510 to rotate, and the first bevel gear 510 drives the second bevel gear 520 to rotate, thereby adjusting the tilt of the blade 131.

[0040] It should be noted that a flow sensor (not shown in the figure) is provided inside the volute 110 of this embodiment. The flow sensor is used to monitor the flow rate of the liquid flowing through the impeller 130. The flow sensor sends a signal to the central processing unit (not shown in the figure). The central processing unit controls the rotation angle of the drive motor 500 to adjust the tilt of the blade 131.

[0041] It should also be noted that in this embodiment, the rotating ring 200 is rotatably connected inside the volute 110 via two bearings 260, such as... Figure 5 and Figure 7 As shown, the inner and outer rings of the rotating ring 200 are coaxial and fixedly connected to the bearings 260, and both bearings 260 are located inside the volute 110.

[0042] The specific working process of the intelligent, efficient, small-scale hydropower generation equipment provided by the present invention will be described in conjunction with the above embodiments: When no power is generated: When the butterfly valve 620 on the infusion pipeline 600 is opened, almost all the liquid in the infusion pipeline 600 flows through the butterfly valve 620 inside the infusion pipeline 600. At this time, the impeller 130 hardly rotates and therefore does not generate electricity.

[0043] When power generation is needed: The operator closes the butterfly valve 620 on the infusion pipeline 600. The liquid in the infusion pipeline 600 flows to the volute 110 through the branch 610. When the liquid flows through the volute 110, it can drive the impeller 130 to rotate. The two end faces of the blade 131 are clamped by the clamping plate 210, and the clamping plate 210 is set on the rotating ring 200. The blade 131 drives the rotating ring 200 to rotate synchronously. The clamping plate 210 can reduce the deformation and vibration of the blade 131.

[0044] When the liquid flow rate is high, the flow sensor (not shown in the figure) inside the volute 110 sends a signal to the central processing unit (not shown in the figure). The central processing unit controls the drive motor 500 to rotate at a larger angle, thereby increasing the tilt of the blade 131. At this time, the angle between the blade 131 and the liquid flow direction decreases. The pair of clamping plates 210 are ball-connected to the push rod 230, so the pair of clamping plates 210 can still clamp the two end faces of the blade 131 to reduce the vibration and deformation of the blade 131. Simultaneously, a large liquid flow rate increases the rotational speed of the impeller 130. This increased rotational speed of the impeller 130, in turn, increases the rotational speed of the rotating ring 200. The centrifugal block 300 inside the rotating ring 200 experiences increased force, thus overcoming the elastic force of the second elastic element 320. The centrifugal block 300 slides within the radial groove 250. The two inclined surfaces 310 of the centrifugal block 300 push against the two guide rods 340, causing the two guide rods 340 to move away from each other. The guide rods 340 drive the connecting block 350 to move synchronously to compress the first elastic element 240, thereby increasing the force of the first elastic element 240 pushing the push rod 230, which in turn increases the clamping force of the clamping plate 210 on the blade 131. At the same time, the tapered section 341 on the outer periphery of the guide rod 340 will push the adjusting rod 430 inside the piston plate 400 to move, thereby reducing the opening size of the damping hole 420 on the piston plate 400. At this time, the damping force on the push rod 230 increases, making it less likely to move, thereby maintaining the stability of the blade 131 and reducing the vibration frequency and amplitude of the blade 131 during high-speed rotation.

[0045] When the liquid flow rate is low, the flow sensor (not shown in the figure) inside the volute 110 sends a signal to the central processing unit (not shown in the figure). The central processing unit controls the drive motor 500 to rotate a small angle, thereby reducing the tilt of the blade 131. At this time, the angle between the blade 131 and the liquid flow direction increases. The pair of clamping plates 210 are ball-connected to the push rod 230, so the pair of clamping plates 210 can still clamp the two end faces of the blade 131 to reduce the vibration and deformation of the blade 131. Simultaneously, the low liquid flow rate reduces the rotational speed of the impeller 130, which in turn reduces the rotational speed of the rotating ring 200. The centrifugal block 300 inside the rotating ring 200 experiences reduced force, making it unable to overcome the elastic force of the second elastic element 320. The centrifugal block 300 gradually resets within the radial groove 250, and the guide rod 340 also gradually resets under the action of the first elastic element 240. At this time, the tapered section 341 on the outer periphery of the guide rod 340 moves away from the adjusting rod 430, and the adjusting rod 430 resets under the action of the third elastic element 440, thereby gradually increasing the opening size of the damping orifice 420. At this time, the damping force on the push rod 230 decreases, but the clamping plate 210 is still clamped by the action of the first elastic element 240, thus maintaining the stability of the blade 131.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An intelligent and efficient small-scale hydroelectric power generation device, characterized by, include: The turbine body and the generator are provided, wherein the turbine body is located on a branch of the fluid delivery pipeline and the generator is connected to the turbine body. The turbine body includes a volute and an impeller. The impeller is rotatably disposed within the volute, and a rotating ring is rotatably disposed within the volute, the rotating ring abutting against the blade tip of the impeller. A clamping plate is elastically slidably disposed on the rotating ring. The clamping plates are arranged in pairs, and the paired clamping plates clamp the two end faces of the impeller blades.

2. The intelligent and efficient small hydro power plant of claim 1, wherein, A circumferential groove is provided inside the rotating ring, and the circumferential groove extends along the circumference of the rotating ring. A push rod is slidably disposed in the circumferential groove. One end of the push rod extending out of the rotating ring is connected to a clamping plate, and the other end of the push rod is connected to a first elastic element. The first elastic element is connected in the circumferential groove, and the first elastic element causes the clamping plate to have a tendency to clamp the impeller blades.

3. The intelligent and efficient small hydro power plant of claim 2, wherein, The rotating ring is provided with a first adjustment component, which is used to adjust the clamping force of the clamping plate on the impeller blades. The clamping force is positively correlated with the rotation speed of the impeller.

4. The intelligent and efficient small hydro power plant of claim 3, wherein, The first adjustment assembly includes a centrifugal block, a guide rod, and a connecting block. The centrifugal block is radially elastically slidably disposed within the rotating ring. An inclined surface is provided on the centrifugal block. The guide rod is slidably connected to the push rod. The end of the guide rod near the inclined surface slides against the inclined surface. The connecting block is fixedly connected to the guide rod. The end of the connecting block away from the centrifugal block is connected to the first elastic element. The inclined surface is configured to push the guide rod to compress the first elastic element when the centrifugal block moves radially outward along the rotating ring.

5. The intelligent and efficient small hydro power plant of claim 4, wherein, A radial groove is provided inside the rotating ring, the centrifugal block is slidably disposed in the radial groove, and a second elastic element is provided between the centrifugal block and the radial groove.

6. The intelligent and efficient small hydro power plant of claim 4, wherein, The push rod is coaxially mounted on one end within the circumferential groove and a piston plate is fixedly installed thereon. The piston plate divides the circumferential groove into two sealed cavities. A damping hole is provided on the piston plate, and a second adjustment component is provided on the piston plate. The second adjustment component is used to adjust the opening size of the damping hole. The opening size of the damping hole is negatively correlated with the rotational speed of the impeller.

7. The intelligent and efficient small hydro power plant of claim 6, wherein, The second adjustment assembly includes an adjustment rod and a third elastic element. The adjustment rod slides radially along and through the damping hole. A through hole is provided on the adjustment rod, and the diameter of the through hole is the same as the diameter of the damping hole. The third elastic element is connected to the adjustment rod. One end of the adjustment rod slides against the outer periphery of the guide rod. A tapered section is provided on the outer periphery of the guide rod. The tapered section is configured to push the adjustment rod to move and reduce the opening size of the damping hole when the guide rod moves and compresses the first elastic element.

8. The intelligent, efficient, small-scale hydropower generation equipment according to claim 4, characterized in that, The connecting block has air holes.

9. The intelligent, efficient, small-scale hydropower generation equipment according to claim 2, characterized in that, A ball joint is fixedly installed on one end of the push rod extending from the rotating ring. A connecting ball is hinged inside the ball joint and fixedly connected to the clamping plate. The blades of the impeller are rotatably connected to the impeller and are inclined. A third adjustment component is provided inside the impeller. The third adjustment component is used to adjust the inclination of the impeller blades. The inclination of the blades is positively correlated with the flow rate of the liquid inside the branch of the infusion pipeline.

10. The intelligent, efficient, small-scale hydropower generation equipment according to claim 9, characterized in that, The third adjustment component includes a drive motor, a first bevel gear, and a second bevel gear. The drive motor is fixedly installed inside the impeller. The first bevel gear is coaxial and fixedly installed on the shaft of the drive motor. The second bevel gear is coaxial and fixedly installed on the shaft of the blade. The first bevel gear meshes with the second bevel gear.

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