Hydroelectric power generation equipment and power generation method based on axial flow water turbine

Abstract

The invention discloses hydroelectric power generation equipment and a power generation method based on an axial flow water turbine, and relates to the field of hydroelectric power generation equipment. Power is generated through kinetic energy of residual water heads and water flow in the water supply pipeline of the water plant, water flow energy loss can be prevented, the energy utilization efficiency is improved, and sustainable development is facilitated; when a water plant supplies water through the water conveying pipeline, the water pressure in the water conveying pipeline is in a fluctuating state, the angles of the blades are correspondingly adjusted through the impeller adjusting mechanism at the moment, stable water supply can be guaranteed, meanwhile, the power generation capacity of the power generation mechanism can be improved as much as possible, and therefore water flow energy loss is reduced; the blades are locked and fixed on the rotor through the impeller locking mechanism, so that the blades cannot automatically rotate and loosen under the impact action of water flow, the blades can normally work to carry out hydroelectric generation, and when the angles of the blades need to be adjusted, the impeller locking mechanism can unlock the blades, so that the hydroelectric generation efficiency is improved. And the normal blade angle adjusting process is ensured.

Description

Technical Field

[0001] The present invention belongs to the field of hydroelectric power generation equipment. Specifically, it particularly relates to a hydroelectric power generation equipment and a power generation method based on an axial flow turbine. Background Art

[0002] Hydroelectric power generation is a science and technology that studies technical and economic issues such as engineering construction and production operation for converting water energy into electrical energy. The water energy utilized in hydroelectric power generation is mainly the potential energy stored in water bodies. To convert water energy into electrical energy, different types of hydropower stations need to be built. The basic principle of hydroelectric power generation is to utilize the water level drop and cooperate with a water turbine generator to generate electricity, that is, to convert the potential energy of water into the mechanical energy of the water turbine, and then use the mechanical energy to drive the generator to obtain electricity. Currently, to convert water energy into electrical energy, different types of hydropower stations need to be built on natural water bodies such as rivers. It is necessary to throttle and divert the river, and then build equipment at the riverbed. The project volume is large, the cycle is long, and hydroelectric power generation can only start after the hydropower station is basically completed. It is known that most hydroelectric power generation is set up in large-scale water conservancy power stations, but there is still a lot of other water power in life that has not been utilized.

[0003] For example, when a water plant supplies water, to ensure stable water supply, the water supply pressure is generally greater than the actual required pressure, which will generate excess water head and water flow kinetic energy, thereby causing energy loss. Based on this, the present invention provides a device and a hydroelectric power generation method for generating electricity by using the remaining water head and water flow kinetic energy. Summary of the Invention

[0004] In view of the problems in the related art, the present invention proposes a hydroelectric power generation equipment and a power generation method based on an axial flow turbine to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above-mentioned technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention provides a hydroelectric power generation equipment, including a water conveyance pipeline, on which a power generation mechanism is connected and installed. The power generation mechanism includes a hydraulic pump housing, an axial flow impeller group, and a generator. The hydraulic pump housing is connected and installed on the water conveyance pipeline. The axial flow impeller group is rotatably installed inside the hydraulic pump housing. The generator is fixedly installed on one side outside the hydraulic pump housing and is in transmission connection with the axial flow impeller group;

[0007] The axial flow impeller group includes a rotor, on the outer circle of which a plurality of blades are installed in a circumferential distribution. One end of the rotor is fixedly installed with a power generation drive shaft, and the power generation drive shaft is in transmission connection with the generator;

[0008] An impeller adjustment mechanism is installed on the rotor. The impeller adjustment mechanism can adjust the angles of the blades on the rotor to adjust the hydraulic impact force on the blades when the water flow in the water conveyance pipeline passes through the hydraulic pump housing and the head loss generated when the water flow passes through the hydraulic pump housing.

[0009] An impeller locking mechanism is also installed in the rotor. The impeller locking mechanism can lock and fix the blades on the rotor and can release the locking of the blades when the impeller adjustment mechanism adjusts the angles of the blades.

[0010] Further, the water conveyance pipeline includes a main pipeline and a connecting pipe. Both ends of the connecting pipe are communicated with the main pipeline. The hydraulic pump housing is installed on the connecting pipe, and volutes for communicating with the connecting pipe are provided at both ends of the hydraulic pump housing.

[0011] 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.

[0012] Further, the impeller adjustment mechanism includes a plurality of rotating seats, a transmission shaft and a driving assembly. The plurality of rotating seats are rotationally installed on the side wall of the rotor in a circumferential distribution. The outer ends of the rotating seats are fixedly installed with the blades. The inner ends of the rotating seats are fixedly installed with rotating shafts. Driven bevel gears are fixedly installed at the ends of the rotating shafts. The transmission shaft is rotationally installed at the central axis position inside the rotor. One end of the transmission shaft is in transmission connection with the driving assembly. A driving bevel gear is fixedly installed at the other end of the transmission shaft. The plurality of driven bevel gears are all in meshing transmission connection with the driving bevel gear. The driving assembly can drive the transmission shaft and the driving bevel gear to rotate, so that the driving bevel gear meshes and drives the plurality of driven bevel gears to rotate synchronously.

[0013] Further, the driving assembly includes an adjustment motor, an adjustment shaft and a clutch unit. The adjustment shaft is rotationally installed at one end of the rotor and is coaxially arranged with the transmission shaft. One end of the adjustment shaft can be fixedly connected with the transmission shaft through the clutch unit. The other end of the adjustment shaft extends to the outside of the hydraulic pump housing and is in transmission connection with the adjustment motor.

[0014] Further, the clutch unit includes a fixed friction disk and a spline. The fixed friction disk is fixedly installed at one end of the transmission shaft. The spline is fixedly installed at the inner end of the adjustment shaft. A moving friction disk is slidably installed on the spline.

[0015] Further, the clutch unit further includes a motor, an internal gear ring, and a connecting ring. The connecting ring is rotatably installed on the outer ring of the moving friction disk. A plurality of connecting rods distributed in a circle are fixedly installed on the outer ring of the connecting ring. A threaded sleeve is fixedly installed at the outer end of the connecting rod. A threaded rod is installed in the threaded sleeve in a threaded transmission manner. The bottom end of the threaded rod is rotatably connected to the inner wall of the rotor, and the top end of the threaded rod is fixedly installed with a transmission gear.

[0016] The internal gear ring is rotatably installed on the inner wall of the rotor, and the internal gear ring is simultaneously meshed and transmission-connected with a plurality of transmission gears. The motor is fixedly installed inside the rotor, and the output end of the motor is transmission-connected with a driving gear, and the driving gear is meshed and transmission-connected with the internal gear ring.

[0017] Further, the impeller locking mechanism includes a plurality of locking seats. The plurality of locking seats are fixedly installed on the inner wall of the rotor in a circle, and each locking seat is located on the outer ring of the corresponding rotating shaft. A plurality of sliding grooves distributed in a circle are provided on the locking seat, and clamping blocks are slidably installed in the sliding grooves.

[0018] Further, a driving disk located below the clamping block is rotatably installed inside the locking seat. A flat thread is provided on the top surface of the driving disk, and a limiting guide groove that is slidably clamped with the flat thread is provided on the bottom surface of the clamping block. When the driving disk rotates, it can drive a plurality of clamping blocks to move outward synchronously along the sliding grooves through the cooperation of the flat thread and the limiting guide groove.

[0019] An end face gear ring is fixedly installed on the outer circle of the bottom surface of the driving disk. A transmission rod is rotatably installed on the side wall of the locking seat. A driven gear that is meshed and transmission-connected with the internal gear ring is fixedly installed at the outer end of the transmission rod, and a driving gear that is meshed and transmission-connected with the end face gear ring is fixedly installed at the inner end of the transmission rod.

[0020] Further, a friction plate that can be attached to the outer circle of the rotating shaft is fixedly installed at the inner end of the clamping block, and friction lines are provided on the outer circle of the rotating shaft.

[0021] The present invention also discloses a power generation method based on an axial flow water turbine, and the specific steps are as follows:

[0022] When the water flow in the water conveyance pipeline 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.

[0023] When the conveying water pressure in the water conveyance pipeline decreases, first release the locking and fixing of the impeller locking mechanism on the blades, and then rotate and adjust the blades to the horizontal direction through the impeller adjusting mechanism to reduce the resistance suffered by the water flow passing through the blades, thereby reducing the head loss. After the adjustment is completed, lock and fix the blades again through the impeller locking mechanism.

[0024] Correspondingly, when the conveying water pressure in the water conveyance pipeline increases, after unlocking the blades, the blades are rotated and adjusted in the vertical direction through the impeller adjusting mechanism to increase the impact force on the blades when the water flows through the hydraulic pump housing, thereby increasing the rotational speeds of the blades and the rotor.

[0025] The present invention has the following beneficial effects:

[0026] 1. In the present invention, a power generation mechanism is installed on the water conveyance pipeline of the waterworks. When the water in the water conveyance pipeline flows through the hydraulic pump housing in the power generation mechanism, 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. By using the remaining water head and water flow kinetic energy in the water conveyance pipeline of the waterworks for power generation, the loss of water flow energy can be prevented, the energy utilization efficiency is improved, and it is beneficial to sustainable development.

[0027] 2. In the present invention, when the conveying water pressure in the water conveyance pipeline decreases, the blades can be rotated and adjusted in the horizontal direction through the impeller adjusting mechanism to reduce the resistance suffered by the water when flowing through the blades, thereby reducing the head loss, ensuring that after the water flow in the water conveyance pipeline passes through the loss of the power generation mechanism, the remaining water flow kinetic energy can still complete the normal conveyance of the water flow in the pipeline, so as to ensure that the water conveyance pipeline is not affected by the power generation mechanism and ensure stable water supply; when the conveying water pressure in the water conveyance pipeline increases, the blades can be rotated and adjusted in the vertical direction through the impeller adjusting mechanism to increase the impact force on the blades when the water flows through the hydraulic pump housing, thereby increasing the rotational speeds of the blades and the rotor to increase the power generation amount of the power generation mechanism; when the waterworks supplies water through the water conveyance pipeline, due to factors such as user water consumption, the water pressure in the water conveyance pipeline will be in a fluctuating state. At this time, by adjusting the blade angle through the impeller adjusting mechanism, while ensuring stable water supply, the power generation amount of the power generation mechanism can be increased as much as possible, thereby reducing the loss of water flow energy.

[0028] 3. In the present invention, the blades can be locked and fixed on the rotor through the impeller locking mechanism, so that the blades will not rotate and adjust the angle by themselves under the impact of the water flow, ensuring that the blades can work normally for hydraulic power generation. When the angle of the blades needs to be adjusted, the impeller locking mechanism can unlock the blades to ensure the normal progress of the blade angle adjustment process.

[0029] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To more clearly illustrate the technical solutions of the embodiments of the invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 Schematic diagram of the three-dimensional structure of the hydroelectric power generation device of the present invention;

[0032] Figure 2 Top view of the hydroelectric power generation device of the present invention;

[0033] Figure 3 One of the schematic diagrams of the three-dimensional structure of the axial flow impeller group of the present invention;

[0034] Figure 4 Another schematic diagram of the three-dimensional structure of the axial flow impeller group of the present invention;

[0035] Figure 5 For the present invention Figure 4 Partial enlarged structure schematic diagram at position A;

[0036] Figure 6 One of the schematic diagrams of the three-dimensional structure of the axial flow impeller group of the present invention;

[0037] Figure 7 For the present invention Figure 6 Partial enlarged structure schematic diagram at position 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 Partial enlarged structure schematic diagram at position C.

[0040] In the figure: 1, main pipeline; 2, connecting pipe; 3, flow regulating valve; 4, flowmeter; 5, power generation mechanism; 51, hydraulic pump housing; 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, driving bevel gear; 66, motor; 67, transmission shaft; 68, fixed friction disc; 69, moving friction disc; 610, spline; 611, driving gear; 612, internal gear 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 plate; 78, driving gear; 79, end face gear ring; 710, driving disc; 711, planar thread. Detailed implementation manners

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0043] Embodiment 1

[0044] Please refer to Figures 1-4As shown, the present invention is a hydroelectric power generation equipment, including a water pipeline, on which a power generation mechanism 5 is connected and installed, the power generation mechanism 5 includes a hydraulic pump housing 51, an axial flow impeller group and a generator 54, the hydraulic pump housing 51 is connected and installed on the water pipeline, the axial flow impeller group is rotatably installed inside the hydraulic pump housing 51, the generator 54 is fixedly installed on one side of the outside of the hydraulic pump housing 51, and is transmission-connected with the axial flow impeller group; the axial flow impeller group includes a rotor 55, the outer ring of the rotor 55 is equipped with a plurality of circumferentially distributed blades 56, and one end of the rotor 55 is fixedly equipped with a power generation drive The shaft 53 is connected to the generator 54 in a transmission manner; the rotor 55 is provided with an impeller adjusting mechanism 6, which can adjust the angle of the blades 56 on the rotor 55, so as to adjust the hydraulic impact force on the blades 56 when the water in the water pipeline flows through the hydraulic pump housing 51 and the head loss generated when the water flows through the hydraulic pump housing 51; the rotor 55 is also provided with an impeller locking mechanism 7, which can lock and fix the blades 56 on the rotor 55, and can release the lock of the blades 56 when the impeller adjusting mechanism 6 adjusts the angle of the blades 56;

[0045] The water pipeline is a water supply pipeline of a water plant. When water in the water pipeline flows through the hydraulic pump housing 51, the blades 56 drive the rotor 55 to rotate under the impact of the water flow. At this time, the rotor 55 drives the power generation drive shaft 53 to rotate synchronously, so that the power generation drive shaft 53 drives the generator 54 to start generating electricity. When the water pressure in the water pipeline decreases, the impeller locking mechanism 7 first releases the locking and fixing of the blades 56, and then the impeller adjusting mechanism 6 rotates the blades 56 in the horizontal direction to reduce the resistance of water flowing through the blades 56, thereby reducing the head loss. After the adjustment is completed, the impeller locking mechanism 7 locks and fixes the blades 56 again. Correspondingly, when the water pressure in the water pipeline increases, the blades 56 are unlocked, and then the impeller adjusting mechanism 6 rotates the blades 56 in the vertical direction to increase the impact force on the blades 56 when the water flows through the hydraulic pump housing 51, thereby increasing the rotation speed of the blades 56, the rotor 55 and the power generation drive shaft 53, thereby increasing the power generation.

[0046] By utilizing the remaining head and kinetic energy of water flow in the water plant's water conveyance pipeline for power generation, it can prevent the loss of water flow energy, improve energy utilization efficiency, and contribute to sustainable development. When the water plant supplies water through the water conveyance pipeline, affected by factors such as user water consumption, the water pressure in the pipeline will fluctuate. At this time, the impeller adjustment mechanism 6 adjusts the angle of the blade 56 accordingly, which can not only ensure stable water supply but also maximize the power generation of the power generation mechanism 5, thereby reducing the loss of water flow energy. The impeller locking mechanism 7 locks and fixes the blade 56 on the rotor 55, preventing the blade 56 from rotating and loosening on its own under the impact of water flow, ensuring that the blade 56 can operate normally for hydraulic power generation. When it is necessary to adjust the angle of the blade 56, the impeller locking mechanism 7 can release the lock on the blade 56 to ensure the normal progress of the blade 56 angle adjustment process.

[0047] Embodiment 2

[0048] Please refer to Figures 1-3 As shown, the difference between this embodiment and the above embodiment is that the water conveyance pipeline includes a main pipeline 1 and a connecting pipe 2. Both ends of the connecting pipe 2 are connected to the main pipeline 1. The hydraulic pump housing 51 is installed on the connecting pipe 2, and volutes 52 for communicating with the connecting pipe 2 are provided at both ends of the hydraulic pump housing 51; a flow regulating valve 3 is connected and installed on the main pipeline 1, and this flow regulating valve 3 is located between the liquid inlet and outlet of the connecting pipe 2. Flow regulating valves 3 and flow meters 4 are installed at both ends of the connecting pipe 2;

[0049] Among them, the main pipeline 1 is the water supply pipeline of the water plant. By adding the connecting pipe 2 and the power generation mechanism 5 to the main pipeline 1, the installation and connection of the power generation mechanism 5 are more convenient. When conducting hydroelectric power generation, the flow regulating valve 3 on the main pipeline 1 is closed, and the flow regulating valve 3 on the connecting pipe 2 is opened, so that the water flow in the main pipeline 1 flows through the connecting pipe 2 and the power generation mechanism 5 for power generation. 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 cooperate with the impeller adjustment mechanism 6 to adjust the angle of the blade 56 so that the blade 56 is at an appropriate power generation angle.

[0050] Embodiment 3

[0051] Please refer to Figures 2-8As shown in the figure, the difference between this embodiment and the above embodiment is that the impeller adjustment mechanism 6 includes a plurality of rotating seats 63, a transmission shaft 67 and a drive assembly. The plurality of rotating seats 63 are rotationally installed on the side wall of the rotor 55 in a circumferential distribution. The outer ends of the rotating seats 63 are fixedly installed with blades 56, and the inner ends of the rotating seats 63 are fixedly installed with rotating shafts 618. The ends of the rotating shafts 618 are fixedly installed with driven bevel gears 64. The transmission shaft 67 is rotationally installed at the central axis position inside the rotor 55. One end of the transmission shaft 67 is in transmission connection with the drive assembly, and the other end of the transmission shaft 67 is fixedly installed with a driving bevel gear 65. The plurality of driven bevel gears 64 are all in meshing transmission connection with the driving bevel gear 65. The drive assembly can drive the transmission shaft 67 and the driving bevel gear 65 to rotate, so that the driving bevel gear 65 meshes with and drives the plurality of driven bevel gears 64 to rotate synchronously;

[0052] The drive assembly includes an adjustment motor 61, an adjustment shaft 62 and a clutch unit. The adjustment shaft 62 is rotationally installed at one end of the rotor 55 and is coaxially arranged with the transmission shaft 67. One end of the adjustment shaft 62 can be fixedly connected to the transmission shaft 67 through the clutch unit. The other end of the adjustment shaft 62 extends to the outside of the hydraulic pump housing 51 and is in transmission connection with the adjustment motor 61;

[0053] When adjusting the angle of the blade 56, the adjustment motor 61 is used to drive the adjustment shaft 62 to rotate. The adjustment shaft 62 drives the transmission shaft 67 to rotate synchronously through the clutch unit, so that the transmission shaft 67 drives the driving bevel gear 65 to rotate. The driving bevel gear 65 meshes with and drives 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 to simultaneously adjust the angles of the plurality of blades 56. This not only makes the angle adjustment process of the blades 56 more convenient, but also ensures that the plurality of blades 56 are always at the same angle, ensuring that the plurality of blades 56 are more evenly stressed when impacted by water flow; after the angle adjustment of the blade 56 is completed, the connection between the adjustment shaft 62 and the transmission shaft 67 is disconnected through the clutch unit, so that the rotor 55 rotates to generate electricity and drives the driven bevel gear 64 to perform a circular motion. When the driven bevel gear 64 meshes with and drives the driving bevel gear 65 and the transmission shaft 67 to rotate, the transmission shaft 67 will not drive the adjustment shaft 62 and the adjustment motor 61 to rotate, thereby reducing the energy loss during the rotation of the rotor 55 and being beneficial to improving the power generation effect during the rotation of the rotor 55.

[0054] Embodiment Four

[0055] Please refer to Figures 5-7As shown, the difference between this embodiment and the above embodiment is that the clutch unit includes a fixed friction disc 68 and a spline 610, the fixed friction disc 68 is fixedly mounted on one end of the transmission shaft 67, the spline 610 is fixedly mounted on the inner end of the adjustment shaft 62, and a dynamic friction disc 69 is slidably mounted on the spline 610; the clutch unit also includes a motor 66, an inner gear ring 612 and a connecting ring 613, the connecting ring 613 is rotatably mounted on the outer ring of the dynamic friction disc 69, a plurality of connecting rods 614 distributed in a circumference are fixedly mounted on the outer ring of the connecting ring 613, a threaded sleeve 615 is fixedly mounted on the outer end of the connecting rod 614, a threaded rod 616 is installed in the threaded transmission of the inner thread of the threaded sleeve 615, the bottom end of the threaded rod 616 is rotatably connected to the inner wall of the rotor 55, and a transmission gear 617 is fixedly mounted on the top of the threaded rod 616;

[0056] The inner gear ring 612 is rotatably mounted on the inner wall of the rotor 55, and the inner gear ring 612 is meshed and transmission-connected with a plurality of transmission gears 617 at the same time. The motor 66 is fixedly mounted inside the rotor 55, and a driving gear 611 is transmission-mounted at the output end of the motor 66, and the driving gear 611 is meshed and transmission-connected with the inner gear ring 612;

[0057] When the blade 56 is adjusted in angle, the motor 66 drives the active gear 611 to rotate. At this time, the active gear 611 meshes and drives the inner gear ring 612 to rotate. When the inner gear ring 612 rotates, it meshes and drives multiple transmission gears 617 to rotate synchronously, so that the transmission gear 617 drives the threaded rod 616 to rotate synchronously. When the threaded rod 616 rotates, the threaded sleeve 615 thereon is driven to move upward through the threaded transmission. At the same time, the threaded sleeve 615 drives the dynamic friction disk 69 to move upward along the spline 610 through the connecting rod 614 and the connecting ring 613, so that the dynamic friction disk 69 moves and is close to one side of the fixed friction disk 68. Then, when the adjusting shaft 62 rotates, the adjusting shaft 62 drives the dynamic friction disk 69 to rotate synchronously through the spline 610. At this time, the dynamic friction disk 69 drives the fixed friction disk 68 to rotate synchronously through the friction force, thereby driving the transmission shaft 67 and the transmission bevel gear 65 to rotate, and 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 rotate in the opposite direction. At this time, the driving gear 611 meshes and drives the inner gear ring 612 to rotate in the opposite direction, so that the inner gear ring 612 meshes and drives multiple transmission gears 617 to rotate in the opposite direction synchronously, so that the transmission gear 617 drives the threaded rod 616 to rotate in the opposite direction. When the threaded rod 616 rotates in the opposite direction, the threaded sleeve 615 thereon is driven to move downward and reset through the threaded transmission. At the same time, the threaded sleeve 615 drives the dynamic friction disk 69 to move downward and reset along the spline 610 through the connecting rod 614 and the connecting ring 613, so that the dynamic friction disk 69 is separated from the fixed friction disk 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 adjustment shaft 62 to rotate, so as to reduce the mechanical loss during power generation;

[0059] Among them, the outer ring of the dynamic friction disk 69 is used to move and adjust the dynamic friction disk 69 through the cooperation of the connecting ring 613 and multiple connecting rods 614, so that the dynamic friction disk 69 is more stable during installation and movement adjustment, and the dynamic friction disk 69 can be tightly fitted with one side of the fixed friction disk 68 when it is fitted, thereby ensuring the stability of the friction connection between the dynamic friction disk 69 and the fixed friction disk 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 disk 69 to move, making the movement and adjustment process of the dynamic friction disk 69 more convenient.

[0060] Embodiment 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 installed on the inner wall of the rotor 55 in a circumferential manner, and each locking seat 71 is located at the outer ring of the corresponding rotating shaft 618, and a circumferentially distributed sliding groove 74 is provided on the locking seat 71, and a clamping block 75 is slidably installed in the sliding groove 74; a driving disk 710 located below the clamping block 75 is rotatably installed inside the locking seat 71, and a plane thread 711 is provided on the top surface of the driving disk 710, and the bottom surface of the clamping block 75 is provided on a limiting guide groove 76 that is slidably engaged with the plane thread 711. When the driving disk 710 rotates, the plurality of clamping blocks 75 can be driven to move synchronously outward along the sliding groove 74 through the cooperation of the plane thread 711 and the limiting guide groove 76;

[0062] The outer ring of the bottom surface of the driving disk 710 is fixedly mounted with an end face gear ring 79, and 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 meshing and drivingly connected with the inner gear ring 612, and the inner end of the transmission rod 72 is fixedly mounted with a driving gear 78 meshing and drivingly connected with the end face gear ring 79;

[0063] Among them, the clamping block 75 centers and clamps the rotating shaft 618 to clamp and lock the rotating shaft 618, and further locks and fixes the rotating seat 63 and the blade 56. When the internal gear ring 612 rotates to drive the moving friction disk 69 to fit with the fixed friction disk 68 before the angle of the blade 56 is adjusted, the internal gear ring 612 drives all the driven gears 73 to rotate synchronously. At this time, the driven gear 73 drives the driving gear 78 to rotate through the transmission rod 72, so that the driving gear 78 meshes with and drives the end face gear ring 79 and the driving disk 710 to rotate. When the driving disk 710 rotates, it drives a plurality of clamping blocks 75 to move outward synchronously along the sliding groove 74 through the cooperation of the planar thread 711 and the limiting guide groove 76 to open, so that the clamping block 75 releases the clamping and locking of the rotating shaft 618, and further facilitates the subsequent angle adjustment of the rotating shaft 618 and the blade 56; when the angle adjustment of the blade 56 is completed, when the internal gear ring 612 rotates in the reverse direction to drive the moving friction disk 69 to separate from the fixed friction disk 68, the internal gear ring 612 drives a plurality of driven gears 73 to rotate synchronously in the reverse direction. At this time, the driven gear 73 drives the driving gear 78 to rotate in the reverse direction through the transmission rod 72, so that the driving gear 78 meshes with and drives the end face gear ring 79 and the driving disk 710 to rotate in the reverse direction. When the driving disk 710 rotates in the reverse direction, it drives a plurality of clamping blocks 75 to move inward synchronously along the sliding groove 74 through the cooperation of the planar thread 711 and the limiting guide groove 76 to close, so that the plurality of clamping blocks 75 cooperate to center and clamp the rotating shaft 618, and further clamp and lock the rotating shaft 618 and the blade 56 again.

[0064] Furthermore, a friction plate 77 that can fit with the outer ring of the rotating shaft 618 is fixedly installed at the inner side end of the clamping block 75, and friction lines are provided on the outer ring of the rotating shaft 618. Through the cooperation of the friction plate 77 and the friction lines, the locking force when the clamping block 75 clamps and locks the rotating shaft 618 can be improved, and further the locking effect on the blade 56 can be improved.

[0065] Embodiment Six

[0066] This embodiment discloses a power generation method based on an axial flow water turbine. The specific steps are as follows:

[0067] When the water flow in the water conveyance pipeline passes through the hydraulic pump housing 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 drive shaft 53 to rotate synchronously, so that the power generation drive shaft 53 drives the generator 54 to start generating electricity;

[0068] When the conveying water pressure in the water conveyance pipeline decreases, first release the locking and fixing of the blade 56 by the impeller locking mechanism 7, and then rotate and adjust the blade 56 to the horizontal direction through the impeller adjusting mechanism 6 to reduce the resistance suffered by the water flow through the blade 56, and further reduce the head loss. After the adjustment is completed, lock and fix the blade 56 again through the impeller locking mechanism 7;

[0069] Correspondingly, when the water pressure in the water conveyance pipeline increases, after unlocking the blade 56, the blade 56 is rotated and adjusted in the vertical direction through the impeller adjusting mechanism 6 to increase the impact force on the blade 56 when the water flows through the hydraulic pump housing 51, thereby increasing the rotational speeds of the blade 56 and the rotor 55.

[0070] In the description of this specification, the descriptions with reference to the terms "one embodiment", "example", "specific example", etc. mean 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 this specification, the schematic representations 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 a suitable manner in any one or more embodiments or examples.

[0071] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application 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: The water pipeline is connected to a power generation mechanism, which includes a hydraulic pump housing, an axial flow impeller group and a generator. The hydraulic pump housing is connected to the water pipeline, the axial flow impeller group is rotatably installed inside the hydraulic pump housing, and the generator is fixedly installed on one side of the outside of the hydraulic pump housing and is drivingly connected to the axial flow impeller group. The axial flow impeller assembly comprises a rotor, the outer ring of which is provided with a plurality of blades distributed in a circumference, and one end of the rotor is fixedly provided with a power generation drive shaft, the power generation drive shaft being transmission-connected to the generator; The rotor is provided 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 when the water in the water delivery pipeline flows through the hydraulic pump housing and the head loss generated when the water flows through the hydraulic pump housing; An impeller locking mechanism is also installed in the rotor, and the impeller locking mechanism can lock and fix the blades on the rotor, and can release the lock of the blades when the impeller adjusting mechanism adjusts the angle of the blades.

2. A hydroelectric power 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 connecting to 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. Both ends of the connecting pipe are equipped with a flow regulating valve and a flow meter.

3. A hydroelectric power generation equipment according to claim 1, characterized in that: The impeller adjustment mechanism includes multiple rotating seats, a transmission shaft and a driving assembly. The multiple rotating seats are rotatably installed on the side wall of the rotor in a circular distribution. The outer ends of the rotating seats are fixedly installed with the blades, the inner ends of the rotating seats are fixedly installed with rotating shafts, and the ends of the rotating shafts are fixedly installed with driven bevel gears. The transmission shaft is rotatably installed at the center 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 meshingly transmission-connected with the transmission bevel gear. The driving assembly can drive the transmission shaft and the transmission bevel gear to rotate, so that the transmission bevel gear meshes and drives multiple driven bevel gears to rotate synchronously.

4. A hydroelectric power generation equipment according to claim 3, characterized in that: The driving assembly includes an adjusting motor, an adjusting shaft and a clutch unit. The adjusting shaft is rotatably mounted on one end of the rotor and is coaxially arranged with the transmission shaft. 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 extends to the outside of the hydraulic pump housing and is transmission-connected to the adjusting motor.

5. A hydroelectric power generation equipment according to claim 4, characterized in that: The clutch unit comprises a fixed friction disc and a spline. 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 a dynamic friction disc is slidably mounted on the spline.

6. A hydroelectric power generation equipment according to claim 5, characterized in that: The clutch unit further comprises a motor, an inner gear ring and a connecting ring, wherein the connecting ring is rotatably mounted on the outer ring of the dynamic friction disc, a plurality of connecting rods distributed in a circumference 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 transmission, the bottom end of the threaded rod is rotatably connected to the inner wall of the rotor, and 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 meshingly and transmission-connected with a plurality of transmission gears at the same time. The motor is fixedly mounted inside the rotor, and a driving gear is transmission-mounted at the output end of the motor, and the driving gear is meshingly and transmission-connected with the inner gear ring.

7. A hydroelectric power generation equipment according to claim 6, characterized in that: The impeller locking mechanism includes a plurality of locking seats, which are fixedly mounted on the inner wall of the rotor in a circumferential 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 a clamping block is slidably mounted in the sliding groove.

8. A hydroelectric power generation equipment according to claim 7, characterized in that: A driving disk located below the clamping block is rotatably mounted inside the locking seat, the top surface of the driving disk is provided with a planar thread, and the bottom surface of the clamping block is provided with a limiting guide groove that is slidably engaged with the planar thread. When the driving disk rotates, the planar thread and the limiting guide groove can cooperate to drive multiple clamping blocks to move outwards synchronously along the slide groove; The outer ring of the bottom surface of the driving disk 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 meshing with the inner gear ring, and the inner end of the transmission rod is fixedly installed with a driving gear meshing with the end face gear ring.

9. A hydroelectric power generation equipment according to claim 8, characterized in that: A friction plate that can fit with the outer ring of the rotating shaft is fixedly installed on the inner side end of the clamping block, and the outer ring of the rotating shaft is provided with friction patterns.

10. A method for generating electricity based on an axial flow turbine, using the hydroelectric power generation equipment according to any one of claims 1 to 9, characterized in that: The specific steps are: When the water in the water pipeline 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 is first released to lock the blades, and then the impeller adjusting mechanism is used to 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 is used to lock the blades again; Correspondingly, when the water pressure in the water pipeline increases, the blades are unlocked and then rotated in the vertical direction by the impeller adjustment mechanism to increase the impact force on the blades when water flows through the hydraulic pump housing, thereby increasing the rotation speed of the blades and the rotor.

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