Hydroelectric power generation apparatus and method of generating electricity based on axial flow water turbine

Abstract

The application discloses a kind of hydroelectric power generation equipment and generation method based on axial flow water turbine, it is related to hydroelectric power generation equipment field.The present application can prevent water flow energy loss by using the residual water head and water flow energy in water supply pipeline of water plant, improve energy utilization efficiency, and is conducive to sustainable development;When water plant supplies water through water supply pipeline, the water pressure in the water supply pipeline will be in a fluctuating state, at this time, the angle of the blade is adjusted by the impeller adjusting mechanism, which can improve the power generation capacity of the power generation mechanism as much as possible while ensuring the stability of water supply, thereby reducing the water flow energy loss;The blade is locked and fixed on the rotor by the impeller locking mechanism, so that the blade will not rotate loose under the action of water flow, to ensure that the blade can work normally to generate hydroelectric power, and when the angle of the blade needs to be adjusted, the impeller locking mechanism can release the locking of the blade to ensure the normal adjustment of the angle of the blade.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of hydroelectric power generation equipment, and particularly relates to a hydroelectric power generation equipment and a power generation method based on an axial flow type water turbine. BACKGROUND

[0002] Hydroelectric power generation is a science and technology for researching technical and economic problems such as engineering construction and production operation for converting water energy into electric energy. The water energy used by hydroelectric power generation is mainly potential energy contained in water bodies. In order to realize the conversion of water energy into electric energy, different types of hydropower stations need to be built, and the basic principle of hydroelectric power generation is to use water head to cooperate with a water turbine generator to generate electric power, that is, to convert the potential energy of water into mechanical energy of a water turbine, and then to drive the generator by the mechanical energy to obtain electric power. At present, in order to realize the conversion of water energy into electric energy, different types of hydropower stations need to be built on natural water bodies such as rivers, the river needs to be throttled and diverted, and then equipment needs to be built at the riverbed, which has large engineering quantity, long period, and needs to be completed before hydroelectric power generation can be started. It is known that hydroelectric power generation is mostly set in large-scale water power stations, but many other water forces in life have not been utilized.

[0003] For example, when a water plant supplies water, in order to ensure stable water supply, the water supply pressure is generally greater than the actual required water pressure, thereby causing excess water head and water flow energy, and further causing energy loss. Based on this, the present application provides a device and a hydroelectric power generation method for generating electricity by using the excess water head and water flow energy. SUMMARY

[0004] In view of the problems in the related art, the present application provides a hydroelectric power generation equipment and a power generation method based on an axial flow type water turbine to overcome the above technical problems existing in the prior art.

[0005] To solve the above technical problems, the present application is realized by the following technical scheme:

[0006] The present application is a hydroelectric power generation equipment, which comprises a water conveying pipeline, a power generation mechanism connected and installed on the water conveying pipeline, the power generation mechanism comprising a hydraulic pump shell, an axial flow impeller group and a generator, the hydraulic pump shell being connected and installed on the water conveying pipeline, the axial flow impeller group being rotatably installed in the hydraulic pump shell, and the generator being fixedly installed on one side of the outside of the hydraulic pump shell and being in transmission connection with the axial flow impeller group.

[0007] The axial flow impeller group comprises a rotor, a plurality of circumferentially distributed blades being installed on the outer ring of the rotor, a power generation driving shaft being fixedly installed on one end of the rotor, and the power generation driving shaft being in transmission connection with the generator.

[0008] The rotor is provided with an impeller adjusting mechanism, which can adjust the angle of the blades on the rotor to adjust the hydraulic impact force on the blades when the water flows through the hydraulic pump shell and the water head loss generated when the water flows through the hydraulic pump shell.

[0009] The rotor is further provided with an impeller locking mechanism, which can lock and fix the blades on the rotor and can release the locking of the blades when the impeller adjusting mechanism adjusts the angle of the blades.

[0010] Further, the water conveying pipeline comprises a main pipeline and a connecting pipeline, both ends of the connecting pipeline are communicated with the main pipeline, the hydraulic pump shell is installed on the connecting pipeline, and both ends of the hydraulic pump shell are provided with volutes for communicating with the connecting pipeline.

[0011] The main pipeline is connected and installed with a flow regulating valve, and the flow regulating valve is located between the liquid inlet and the liquid outlet of the connecting pipeline, and both ends of the connecting pipeline are installed with a flow regulating valve and a flow meter.

[0012] Further, the impeller adjusting mechanism comprises a plurality of rotating seats, a transmission shaft and a driving assembly, the plurality of rotating seats are circumferentially distributed and rotatably installed on the side wall of the rotor, the outer side end of each rotating seat is fixedly installed with the blade, the inner side end of each rotating seat is fixedly installed with a rotating shaft, the end of each rotating shaft is fixedly installed with a driven bevel gear, the transmission shaft is rotatably installed at the central axis position inside the rotor, one end of the transmission shaft is in transmission connection with the driving assembly, the other end of the transmission shaft is fixedly installed with a transmission bevel gear, each driven bevel gear is in meshing transmission connection with the transmission bevel gear, and the driving assembly can drive the transmission shaft and the transmission bevel gear to rotate, so that the transmission bevel gear drives the plurality of driven bevel gears to rotate synchronously.

[0013] Further, the driving assembly comprises an adjusting motor, an adjusting shaft and a clutch unit, one end of the adjusting shaft is rotatably installed on the rotor and coaxially arranged with the transmission shaft, one end of the adjusting shaft can be fixedly connected with the transmission shaft through the clutch unit, and the other end of the adjusting shaft extends to the outside of the hydraulic pump shell and is in transmission connection with the adjusting motor.

[0014] Further, the clutch unit comprises a fixed friction plate and a spline, the fixed friction plate is fixedly installed on one end of the transmission shaft, the spline is fixedly installed on the inner side end of the adjusting shaft, and a movable friction plate is slidably installed on the spline.

[0015] Further, the clutch unit further comprises a motor, an inner gear ring and a connecting ring, the connecting ring is rotationally installed on the outer ring of the dynamic friction disc, a plurality of connecting rods are fixedly installed on the outer ring of the connecting ring in a circumferential distribution, a threaded sleeve is fixedly installed on the outer side end of the connecting rod, a threaded rod is internally threadedly and transmissionally installed on the threaded sleeve, the bottom end of the threaded rod is rotationally connected with the inner wall of the rotor, and a transmission gear is fixedly installed on the top end of the threaded rod.

[0016] The inner gear ring is rotationally installed on the inner wall of the rotor, and the inner gear ring is simultaneously meshingly and transmissionally connected with a plurality of transmission gears, the motor is fixedly installed in the interior of the rotor, the output end of the motor is transmissionally installed with a driving gear, and the driving gear is meshingly and transmissionally connected with the inner gear ring.

[0017] Further, the impeller locking mechanism comprises a plurality of locking seats, the plurality of locking seats are fixedly installed on the inner wall of the rotor in a circumferential distribution, and each locking seat is located at the outer ring of the corresponding rotating shaft, the locking seat is provided with a plurality of sliding grooves distributed in a circumferential direction, and the sliding grooves are slidably installed with clamping blocks.

[0018] Further, the inner part of the locking seat is rotationally installed with a driving disc located below the clamping block, the top surface of the driving disc is provided with a plane thread, the bottom surface of the clamping block is arranged in a limiting guide groove in sliding and clamping connection with the plane thread, and when the driving disc rotates, a plurality of clamping blocks can be driven to move outward along the sliding groove by the cooperation of the plane thread and the limiting guide groove;

[0019] The outer ring of the bottom surface of the driving disc is fixedly installed with an end face gear ring, the side wall of the locking seat is rotationally installed with a transmission rod, the outer side end of the transmission rod is fixedly installed with a driven gear in meshing and transmission connection with the inner gear ring, and the inner side end of the transmission rod is fixedly installed with a driving gear in meshing and transmission connection with the end face gear ring.

[0020] Further, the inner side end of the clamping block is fixedly installed with a friction plate capable of abutting the outer ring of the rotating shaft, and the outer ring of the rotating shaft is provided with a friction thread.

[0021] The application further discloses a power generation method based on the axial flow type water turbine.

[0022] When the water in the water conveying pipeline passes through the hydraulic pump shell, the blades are driven to rotate the rotor under the impact of the water flow, at this time, the rotor drives the power generation driving shaft to rotate synchronously, so that the power generation driving shaft drives the generator to start power generation;

[0023] When the conveying water pressure in the water conveying pipeline decreases, firstly, the impeller locking mechanism is unlocked to fix the blades, and then the blades are rotated and adjusted in the horizontal direction through the impeller adjusting mechanism, so as to reduce the resistance of the water flow through the blades and further reduce the water head loss, and when the adjustment is completed, the blades are locked and fixed again through the impeller locking mechanism.

[0024] When the water pressure in the water pipeline increases, the blades are unlocked, and the blades are rotated and adjusted in the vertical direction by the impeller adjusting mechanism to increase the impact force on the blades when the water flows through the hydraulic pump shell, and further increase the rotating speed of the blades and the rotor.

[0025] The present application has the following advantages:

[0026] 1. In the present application, a power generation mechanism is installed on the water pipeline of a water plant. When the water in the water pipeline flows through the hydraulic pump shell in the power generation mechanism, the blades rotate under the impact of the water flow, and the rotor rotates synchronously to drive the power generation drive shaft, so that the power generation drive shaft drives the generator to start generating electricity. By using the residual water head and water flow energy in the water pipeline of the water plant, the energy loss of the water flow can be prevented, the energy utilization efficiency is improved, and sustainable development is promoted.

[0027] 2. In the present application, when the water pressure in the water pipeline decreases, the blades can be rotated and adjusted in the horizontal direction by the impeller adjusting mechanism to reduce the resistance of the water flow through the blades, and further reduce the water head loss. After the water flow through the power generation mechanism, the remaining water flow energy can still complete the normal transportation of the water flow in the pipeline, so that the water pipeline can not be affected by the power generation mechanism, and the water supply can be stable. When the water pressure in the water pipeline increases, the blades can be rotated and adjusted in the vertical direction by the impeller adjusting mechanism to increase the impact force on the blades when the water flows through the hydraulic pump shell, and further increase the rotating speed of the blades and the rotor to increase the power generation capacity of the power generation mechanism. When the water plant supplies water through the water pipeline, the water pressure in the water pipeline will fluctuate due to factors such as user water consumption. At this time, the angle of the blades is adjusted by the impeller adjusting mechanism, which can increase the power generation capacity of the power generation mechanism as much as possible while ensuring stable water supply, thereby reducing the energy loss of the water flow.

[0028] 3. In the present application, the blades can be locked and fixed on the rotor by the impeller locking mechanism, so that the blades will not rotate and adjust the angle under the impact of the water flow, and the blades can work normally to generate hydroelectricity. When the angle of the blades needs to be adjusted, the impeller locking mechanism can be unlocked to ensure the normal adjustment of the angle of the blades.

[0029] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the hydropower generation equipment of the present invention;

[0032] Figure 2 A top view of the hydroelectric power generation equipment of the present invention;

[0033] Figure 3 This is one of the three-dimensional structural diagrams of the axial flow impeller assembly of the present invention;

[0034] Figure 4 This is the second schematic diagram of the three-dimensional structure of the axial flow impeller assembly of the present invention;

[0035] Figure 5 For the present invention Figure 4 A local enlarged structural diagram of point A;

[0036] Figure 6 This is the third schematic diagram of the three-dimensional structure of the axial flow impeller assembly of the present invention;

[0037] Figure 7 For the present invention Figure 6 A schematic diagram of the partially enlarged structure at point B;

[0038] Figure 8 Schematic diagram of the three-dimensional structure of the impeller locking mechanism of the present invention;

[0039] Figure 9 For the present invention Figure 8 Schematic diagram of the local enlarged structure at point C.

[0040] Figure: 1, main pipe; 2, connecting pipe; 3, flow regulating valve; 4, flow meter; 5, power generation mechanism; 51, hydraulic pump shell; 52, volute; 53, power generation drive shaft; 54, generator; 55, rotor; 56, blade; 6, impeller regulating mechanism; 61, regulating motor; 62, regulating shaft; 63, rotating seat; 64, driven bevel gear; 65, transmission bevel gear; 66, motor; 67, transmission shaft; 68, fixed friction disc; 69, movable friction disc; 610, spline; 611, driving gear; 612, inner ring; 613, connecting ring; 614, connecting rod; 615, threaded sleeve; 616, threaded rod; 617, transmission gear; 618, rotating shaft; 7, impeller locking mechanism; 71, locking seat; 72, transmission rod; 73, driven gear; 74, sliding groove; 75, clamping block; 76, limiting guide groove; 77, friction disc; 78, driving gear; 79, end face ring gear; 710, driving disc; 711, flat thread. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0042] In the description of the application, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the referred components or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.

[0043] Embodiment one

[0044] Please refer to Figures 1-4As shown, the present application is a kind of hydroelectric power generation equipment, including water delivery pipeline, water delivery pipeline is connected and installed with power generation mechanism 5, power generation mechanism 5 includes hydraulic pump shell 51, axial impeller group and generator 54, hydraulic pump shell 51 is connected and installed on water delivery pipeline, hydraulic pump shell 51 is rotatably installed with axial impeller group in the inside, generator 54 is fixedly installed on the one side of the outside of hydraulic pump shell 51, and is transmissionally connected with axial impeller group;Axial impeller group includes rotor 55, the outer ring of rotor 55 is installed with a plurality of circumferentially distributed blades 56, one end of rotor 55 is fixedly installed with power generation drive shaft 53, power generation drive shaft 53 is transmissionally connected with generator 54;Rotor 55 is installed with impeller adjusting mechanism 6, impeller adjusting mechanism 6 can adjust the angle of blade 56 on rotor 55, to adjust the hydraulic impact force that blade 56 is subjected to when water flow in hydraulic pump shell 51 and the water head loss generated when water flow in hydraulic pump shell 51;Rotor 55 is also installed with impeller locking mechanism 7, impeller locking mechanism 7 can lock and fix blade 56 on rotor 55, and can release the locking of blade 56 when impeller adjusting mechanism 6 adjusts the angle of blade 56;

[0045] Wherein, water delivery pipeline is the water supply pipeline of water plant, when water flow in hydraulic pump shell 51 in water delivery pipeline, blade 56 is driven under the impact of water flow and rotates rotor 55, at this time, rotor 55 drives power generation drive shaft 53 to rotate synchronously, to make power generation drive shaft 53 drive generator 54 to start power generation;When the delivery water pressure in water delivery pipeline decreases, first, impeller locking mechanism 7 is released to the locking and fixing of blade 56, then blade 56 is adjusted to rotate to horizontal direction through impeller adjusting mechanism 6, to reduce the resistance that water flow makes, and then reduce water head loss, when adjusting is completed, blade 56 is locked and fixed again through impeller locking mechanism 7;Correspondingly, when the delivery water pressure in water delivery pipeline increases, after blade 56 is released, blade 56 is adjusted to rotate to vertical direction through impeller adjusting mechanism 6, to increase the impact force that blade 56 is subjected to when water flow in hydraulic pump shell 51, and then increase the rotating speed of blade 56, rotor 55 and power generation drive shaft 53, and then improve power generation capacity;

[0046] By using the residual water head and water flow energy in the water supply pipeline of the water plant to generate electricity, water flow energy loss can be prevented, energy utilization efficiency is improved, and sustainable development is facilitated; when the water plant supplies water through the water supply pipeline, the water pressure in the water supply pipeline will be in a fluctuating state due to factors such as user water consumption, at this time, the angle of the blade 56 is adjusted by the impeller adjusting mechanism 6, which can ensure stable water supply while maximizing the power generation of the power generation mechanism 5, thereby reducing water flow energy loss; the blade 56 is locked and fixed on the rotor 55 by the impeller locking mechanism 7, so that the blade 56 will not rotate loose under the action of water flow, ensuring that the blade 56 can work normally to generate hydroelectricity, and when the angle of the blade 56 needs to be adjusted, the impeller locking mechanism 7 can be unlocked to ensure normal angle adjustment of the blade 56.

[0047] Example two

[0048] Please refer to Figures 1-3 The difference between this embodiment and the above-mentioned embodiments is that the water supply pipeline includes a main pipeline 1 and a connecting pipeline 2, both ends of the connecting pipeline 2 are in communication with the main pipeline 1, the hydraulic pump shell 51 is installed on the connecting pipeline 2, and both ends of the hydraulic pump shell 51 are provided with volutes 52 for communication with the connecting pipeline 2; the flow regulating valve 3 is connected and installed on the main pipeline 1, and the flow regulating valve 3 is located between the liquid inlet and the liquid outlet of the connecting pipeline 2, both ends of the connecting pipeline 2 are installed with the flow regulating valve 3 and the flow meter 4;

[0049] The main pipeline 1 is the water supply pipeline of the water plant, and the connecting pipeline 2 and the power generation mechanism 5 are added to the main pipeline 1, which makes the installation and connection of the power generation mechanism 5 more convenient, and when hydroelectricity is generated, the flow regulating valve 3 on the main pipeline 1 is closed and the flow regulating valve 3 on the connecting pipeline 2 is opened, so that the water in the main pipeline 1 flows through the connecting pipeline 2 and the power generation mechanism 5 to generate electricity, the flow meters 4 at both ends of the power generation mechanism 5 are used to detect the water flow before and after power generation, and are used to adjust the angle of the blade 56 with the impeller adjusting mechanism 6, so that the blade 56 is at an appropriate power generation angle.

[0050] Example three

[0051] Please refer to Figures 2-8The difference between the embodiment and the above-mentioned embodiments is that the impeller adjusting mechanism 6 comprises a plurality of rotating seats 63, a transmission shaft 67 and a driving assembly. The plurality of rotating seats 63 are circumferentially distributed and rotatably installed on the side wall of the rotor 55. The outer side end of each rotating seat 63 is fixedly installed with a blade 56, and the inner side end of each rotating seat 63 is fixedly installed with a rotating shaft 618. The end of each rotating shaft 618 is fixedly installed with a driven bevel gear 64. The transmission shaft 67 is rotatably installed at the central axis position inside the rotor 55. One end of the transmission shaft 67 is in transmission connection with the driving assembly, and the other end of the transmission shaft 67 is fixedly installed with a transmission bevel gear 65. Each driven bevel gear 64 is in meshing transmission connection with the transmission bevel gear 65. The driving assembly can drive the transmission shaft 67 and the transmission bevel gear 65 to rotate, so that the transmission bevel gear 65 meshes to drive the plurality of driven bevel gears 64 to rotate synchronously.

[0052] The driving assembly comprises an adjusting motor 61, an adjusting shaft 62 and a clutch unit. One end of the adjusting shaft 62 is rotatably installed on the rotor 55 and coaxially arranged with the transmission shaft 67. The one end of the adjusting shaft 62 can be fixedly connected with the transmission shaft 67 through the clutch unit. The other end of the adjusting shaft 62 extends to the outside of the hydraulic pump shell 51 and is in transmission connection with the adjusting motor 61.

[0053] When the angle of the blade 56 is adjusted, the adjusting motor 61 drives the adjusting shaft 62 to rotate. The adjusting shaft 62 drives the transmission shaft 67 to rotate synchronously through the clutch unit, so that the transmission shaft 67 drives the transmission bevel gear 65 to rotate. The transmission bevel gear 65 meshes to drive the plurality of driven bevel gears 64 to rotate synchronously, so that the plurality of driven bevel gears 64 respectively drive the corresponding rotating shafts 618 and rotating seats 63 to rotate synchronously. At this time, the rotating seats 63 drive the plurality of blades 56 to rotate synchronously, so as to simultaneously adjust the angle of the plurality of blades 56. This not only makes the angle adjustment process of the blade 56 more convenient, but also ensures that the plurality of blades 56 are always at the same angle and ensures that the plurality of blades 56 are more uniformly stressed when impacted by water flow. When the angle adjustment of the blade 56 is completed, the connection between the adjusting shaft 62 and the transmission shaft 67 is disconnected through the clutch unit, so that the rotor 55 rotates to generate electricity, drives the driven bevel gears 64 to do circular motion, and causes the driven bevel gears 64 to mesh to drive the transmission bevel gear 65 and the transmission shaft 67 to rotate. The transmission shaft 67 will not drive the adjusting shaft 62 and the adjusting motor 61 to rotate, thereby reducing the energy loss when the rotor 55 rotates, and being conducive to improving the power generation effect when the rotor 55 rotates.

[0054] Embodiment Four

[0055] Please refer to Figures 5-7As shown, the embodiment differs from the above-mentioned embodiments in that the clutch unit comprises a fixed friction disc 68 fixedly installed at one end of the transmission shaft 67 and a spline 610 fixedly installed at the inner side end of the adjusting shaft 62, and a movable friction disc 69 slidingly installed on the spline 610; the clutch unit further comprises a motor 66, an inner gear ring 612, and a connecting ring 613, the connecting ring 613 being rotatably installed on the outer ring of the movable friction disc 69, a plurality of connecting rods 614 being circumferentially distributed and fixedly installed on the outer ring of the connecting ring 613, a threaded sleeve 615 being fixedly installed at the outer side end of the connecting rod 614, a threaded rod 616 being threadedly and drivingly installed in the threaded sleeve 615, the bottom end of the threaded rod 616 being rotatably connected with the inner wall of the rotor 55, and a transmission gear 617 being fixedly installed at the top end of the threaded rod 616;

[0056] The inner gear ring 612 is rotatably installed on the inner wall of the rotor 55, and is simultaneously in meshing transmission connection with the plurality of transmission gears 617, the motor 66 being fixedly installed inside the rotor 55, and the output end of the motor 66 being drivingly installed with a driving gear 611 in meshing transmission connection with the inner gear ring 612;

[0057] When the angle of the blade 56 is adjusted, the motor 66 drives the driving gear 611 to rotate, at this time the driving gear 611 meshes to drive the inner gear ring 612 to rotate, and when the inner gear ring 612 rotates, it meshes to drive the plurality of transmission gears 617 to synchronously rotate, so that the transmission gears 617 drive the threaded rod 616 to synchronously rotate, and when the threaded rod 616 rotates, it drives the threaded sleeve 615 thereon to move upward through thread transmission, at the same time, the threaded sleeve 615 drives the movable friction disc 69 to move upward along the spline 610 through the connecting rod 614 and the connecting ring 613, so that the movable friction disc 69 moves closely to one side of the fixed friction disc 68, and then when the adjusting shaft 62 rotates, it drives the movable friction disc 69 to synchronously rotate through the spline 610, at this time the movable friction disc 69 drives the fixed friction disc 68 to synchronously rotate through friction force, and further drives the transmission shaft 67 and the transmission bevel gear 65 to rotate, thereby driving the blade 56 to adjust the angle;

[0058] When the angle adjustment of the blade 56 is completed, the motor 66 drives the driving gear 611 to reversely rotate, at this time the driving gear 611 meshes to drive the inner gear ring 612 to reversely rotate, so that the inner gear ring 612 meshes to drive the plurality of transmission gears 617 to synchronously reversely rotate, thereby making the transmission gears 617 drive the threaded rod 616 to reversely rotate, and when the threaded rod 616 reversely rotates, it drives the threaded sleeve 615 thereon to move downward and reset through thread transmission, at the same time, the threaded sleeve 615 drives the movable friction disc 69 to move downward and reset along the spline 610 through the connecting rod 614 and the connecting ring 613, so that the movable friction disc 69 is separated from the fixed friction disc 68, so that the rotor 55 rotates to generate electricity and drives the transmission shaft 67 to rotate, and the transmission shaft 67 will not drive the adjusting shaft 62 to rotate, thereby reducing the mechanical loss when generating electricity.

[0059] Among them, the outer ring of the dynamic friction disc 69 is used to move and adjust the dynamic friction disc 69 through the cooperation of the connecting ring 613 and multiple connecting rods 614, so that the dynamic friction disc 69 is more stable during installation and movement adjustment, and the dynamic friction disc 69 can be tightly fitted with one side of the fixed friction disc 68 when it is fitted, thereby ensuring the stability of the friction connection between the dynamic friction disc 69 and the fixed friction disc 68, and through the cooperation of the inner gear ring 612, the transmission gear 617, the threaded rod 616 and the threaded sleeve 615, it can drive multiple connecting rods 614 to move synchronously, thereby driving the dynamic friction disc 69 to move, making the movement and adjustment process of the dynamic friction disc 69 more convenient.

[0060] Example 5

[0061] See also Figures 4-9 As shown, the difference between this embodiment and the above embodiment is that the impeller locking mechanism 7 includes a plurality of locking seats 71, which are fixedly mounted on the inner wall of the rotor 55 in a circular manner, and each locking seat 71 is located on the outer ring of the corresponding rotating shaft 618. The locking seats 71 are provided with circumferentially distributed sliding grooves 74, and a clamping block 75 is slidably mounted in the sliding groove 74; a driving disk 710 located below the clamping block 75 is rotatably mounted inside the locking seat 71, and the top surface of the driving disk 710 is provided with a flat thread 711, and the bottom surface of the clamping block 75 is provided with a limiting guide groove 76 that is slidably engaged with the flat thread 711. When the driving disk 710 rotates, the flat thread 711 and the limiting guide groove 76 can cooperate to drive the plurality of clamping blocks 75 to move synchronously outward along the sliding groove 74;

[0062] The outer ring of the bottom surface of the driving disk 710 is fixedly mounted with an end face gear ring 79. A transmission rod 72 is rotatably mounted on the side wall of the locking seat 71. The outer end of the transmission rod 72 is fixedly mounted with a driven gear 73 that meshes and transmits with the inner gear ring 612. The inner end of the transmission rod 72 is fixedly mounted with a driving gear 78 that meshes and transmits with the end face gear ring 79.

[0063] The clamping block 75 is used to center and clamp the rotating shaft 618, so as to clamp and lock the rotating shaft 618, and then the rotating seat 63 and the blade 56 are clamped and locked. When the inner gear ring 612 rotates to drive the driving friction plate 69 to be in close contact with the fixed friction plate 68 before the angle of the blade 56 is adjusted, the inner gear ring 612 drives all the driven gears 73 to rotate synchronously. At this time, the driven gears 73 drive the driving gear 78 to rotate through the transmission rod 72, so that the driving gear 78 meshes with the driving end face gear ring 79 and the driving disc 710 to rotate. When the driving disc 710 rotates, the plurality of clamping blocks 75 are driven to move outward along the sliding groove 74 synchronously through the cooperation of the flat thread 711 and the limiting guide groove 76, so that the clamping blocks 75 are relaxed to clamp and lock the rotating shaft 618, and then the subsequent angle adjustment of the rotating shaft 618 and the blade 56 is facilitated. When the angle adjustment of the blade 56 is completed, the inner gear ring 612 drives the plurality of driven gears 73 to rotate reversely when the driving friction plate 69 is separated from the fixed friction plate 68. At this time, the driven gears 73 drive the driving gear 78 to rotate reversely through the transmission rod 72, so that the driving gear 78 meshes with the driving end face gear ring 79 and the driving disc 710 to rotate reversely. When the driving disc 710 rotates reversely, the plurality of clamping blocks 75 are driven to move inward along the sliding groove 74 synchronously through the cooperation of the flat thread 711 and the limiting guide groove 76, so that the plurality of clamping blocks 75 are used to center and clamp the rotating shaft 618, and then the rotating shaft 618 and the blade 56 are clamped and locked again.

[0064] Further, the inner side end of the clamping block 75 is fixedly provided with a friction plate 77 which can be in close contact with the outer circle of the rotating shaft 618. The outer circle of the rotating shaft 618 is provided with a friction thread. Through the cooperation of the friction plate 77 and the friction thread, the locking force of the clamping block 75 when clamping and locking the rotating shaft 618 can be improved, and then the locking effect on the blade 56 is improved.

[0065] Embodiment six

[0066] The embodiment discloses a power generation method based on an axial flow type water turbine, and the specific steps are as follows.

[0067] When the water in the water conveying pipeline flows through the hydraulic pump shell 51, the blade 56 drives the rotor 55 to rotate under the impact of the water flow. At this time, the rotor 55 drives the power generation driving shaft 53 to rotate synchronously, so that the power generation driving shaft 53 drives the generator 54 to start power generation.

[0068] When the water conveying pressure in the water conveying pipeline decreases, firstly, the blade 56 is unlocked and fixed by the impeller locking mechanism 7, and then the blade 56 is rotated and adjusted in the horizontal direction through the impeller adjusting mechanism 6, so as to reduce the resistance of the water flow through the blade 56, and then the water head loss is reduced. When the adjustment is completed, the blade 56 is locked and fixed again through the impeller locking mechanism 7.

[0069] Correspondingly, when the water pressure in the water delivery pipeline increases, the vane 56 is unlocked, and the vane 56 is rotated and adjusted in the vertical direction by the impeller adjusting mechanism 6 to increase the impact force on the vane 56 when the water flows through the hydraulic pump shell 51, thereby increasing the rotation speed of the vane 56 and the rotor 55.

[0070] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the invention. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] The above disclosed preferred embodiments of the invention are only used to help explain the invention. The preferred embodiments do not describe all the details and limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can well understand and utilize the invention.

Claims

1. A hydroelectric power generation device, comprising a water pipeline, characterized in that: A power generation mechanism is connected to the water pipeline and includes a hydraulic pump housing, an axial flow impeller assembly, and a generator. The hydraulic pump housing is connected to the water pipeline and the axial flow impeller assembly is rotatably mounted inside the hydraulic pump housing. The generator is fixedly mounted on one side of the outside of the hydraulic pump housing and is in transmission connection with the axial flow impeller assembly. The axial flow impeller assembly includes a rotor, the outer ring of which is equipped with a plurality of circumferentially distributed blades, and one end of the rotor is fixedly equipped with a power generation drive shaft, which is transmission-connected to the generator; The rotor is equipped with an impeller adjustment mechanism, which can adjust the angle of the blades on the rotor to adjust the hydraulic impact force on the blades and the head loss generated when the water in the water pipeline flows through the hydraulic pump casing; The rotor is also equipped with an impeller locking mechanism, which can lock the blades on the rotor and release the lock when the impeller adjustment mechanism adjusts the angle of the blades. The impeller adjustment mechanism includes multiple rotating seats, transmission shafts, transmission bevel gears and drive components. The multiple rotating seats are circumferentially distributed and rotatably mounted on the side wall of the rotor. Blades are fixedly mounted on the outer ends of the rotating seats, and rotating shafts are fixedly mounted on the inner ends of the rotating seats. Driven bevel gears are fixedly mounted on the ends of the rotating shafts. The drive component can drive the transmission shafts and transmission bevel gears to rotate, so that the transmission bevel gears engage and drive the multiple driven bevel gears to rotate synchronously. The drive assembly includes an adjusting motor, an adjusting shaft and a clutch unit. One end of the adjusting shaft can be fixedly connected to the transmission shaft through the clutch unit, and the other end of the adjusting shaft is in transmission connection with the adjusting motor. The clutch unit includes a fixed friction disc, a spline, an inner gear ring and a connecting ring. The fixed friction disc is fixedly mounted on one end of the transmission shaft, the spline is fixedly mounted on the inner end of the adjustment shaft, and the dynamic friction disc is slidably mounted on the spline. The connecting ring is rotatably mounted on the outer ring of the dynamic friction disc. A plurality of connecting rods distributed circumferentially are fixedly mounted on the outer ring of the connecting ring. A threaded sleeve is fixedly mounted on the outer end of the connecting rod. A threaded rod is installed in the threaded sleeve through the inner thread of the threaded sleeve. The bottom end of the threaded rod is rotatably connected to the inner wall of the rotor. A transmission gear is fixedly mounted on the top end of the threaded rod. The inner gear ring is rotatably mounted on the inner wall of the rotor, and is simultaneously meshed and connected to a plurality of transmission gears; The impeller locking mechanism includes a plurality of locking seats, which are fixedly mounted on the inner wall of the rotor in a circular manner, and each locking seat is located on the outer ring of the corresponding rotating shaft. The locking seats are provided with circumferentially distributed sliding grooves, and clamping blocks are slidably mounted in the sliding grooves. A driving disc located below the clamping block is rotatably mounted inside the locking seat. The top surface of the driving disc is provided with a flat thread, and the bottom surface of the clamping block is provided with a limiting guide groove that is slidably engaged with the flat thread. The outer ring of the bottom surface of the driving disc is fixedly installed with an end face gear ring, and a transmission rod is rotatably installed on the side wall of the locking seat. The outer end of the transmission rod is fixedly installed with a driven gear that is meshed and connected to the inner gear ring, and the inner end of the transmission rod is fixedly installed with a driving gear that is meshed and connected to the end face gear ring.

2. The hydropower generation equipment according to claim 1, characterized in that: The water delivery pipeline includes a main pipeline and a connecting pipe. Both ends of the connecting pipe are connected to the main pipeline. The hydraulic pump housing is installed on the connecting pipe, and both ends of the hydraulic pump housing are provided with a volute for communicating with the connecting pipe. A flow regulating valve is connected and installed on the main pipeline, and the flow regulating valve is located between the liquid inlet and the liquid outlet of the connecting pipe. Flow regulating valves and flow meters are installed at both ends of the connecting pipe.

3. The hydropower generation equipment according to claim 2, characterized in that: The transmission shaft is rotatably installed at the central axis position inside the rotor. One end of the transmission shaft is transmission-connected to the driving assembly, and the other end of the transmission shaft is fixedly installed with a transmission bevel gear. Multiple driven bevel gears are meshed and transmission-connected with the transmission bevel gear.

4. The hydroelectric power generation equipment according to claim 3, characterized in that: The adjusting shaft is rotatably mounted on one end of the rotor and is coaxially arranged with the transmission shaft. The other end of the adjusting shaft extends to the outside of the hydraulic pump housing.

5. The hydroelectric power generation equipment according to claim 4, characterized in that: The clutch unit also includes a motor, which is fixedly installed inside the rotor. The output end of the motor is driven by a driving gear, which is meshed and connected with the inner gear ring.

6. The hydroelectric power generation equipment according to claim 5, characterized in that: When the driving disc rotates, the planar thread and the limiting guide groove cooperate to drive multiple clamping blocks to move outward synchronously along the sliding groove.

7. The hydroelectric power generation equipment according to claim 6, characterized in that: The inner end of the clamping block is fixedly mounted with a friction plate that can fit with the outer ring of the rotating shaft, and the outer ring of the rotating shaft is provided with friction patterns.

8. A method for generating electricity based on an axial flow turbine, using the hydropower generation equipment according to any one of claims 1 to 7, characterized in that: The specific steps are: When water in the water pipe flows through the hydraulic pump housing, the blades drive the rotor to rotate under the impact of the water flow. At this time, the rotor drives the power generation drive shaft to rotate synchronously, so that the power generation drive shaft drives the generator to start generating electricity. When the water pressure in the water pipeline decreases, the impeller locking mechanism will first release the lock on the blades, and then the impeller adjusting mechanism will rotate the blades in the horizontal direction to reduce the resistance of water flowing through the blades, thereby reducing the head loss. When the adjustment is completed, the impeller locking mechanism will lock the blades again. Correspondingly, when the water pressure in the water pipeline increases, the blades are unlocked and the impeller adjustment mechanism is used to rotate the blades in the vertical direction to increase the impact force on the blades when water flows through the hydraulic pump casing, thereby increasing the speed of the blades and the rotor.

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