Closed water circulation power generation system and method

Abstract

The invention relates to the technical field of hydroelectric power generation devices, and provides a closed water circulation power generation system and method.The closed water circulation power generation system comprises a plurality of power generation core modules, modular structural design is adopted, a proper number of power generation core modules can be selected for assembly and splicing, rapid assembly and disassembly can be achieved, later maintenance is facilitated, and the power generation efficiency is improved. The modular design supports multiple combination modes, can adapt to scenes such as streams, pipelines and channels, and has good adaptability. By arranging the supporting bracket, the working height of the water wheel assembly can be adjusted according to the water flow height of a riverbed or a channel or the position of a flow guide opening in the water storage flow guide mechanism. The structure of the water storage and flow guide mechanism can be correspondingly adjusted according to the water flow velocity of a riverbed or a channel, the transmission part drives the flow guide plate to rotate through the shaft rod, the arc-shaped plate is drawn in the drainage frame, and therefore the opening size of the flow guide opening can be adjusted, seasonal water flow changes can be well adapted, and the power generation efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydroelectric power generation devices, and specifically, to a closed water circulation power generation system and method. Background Art

[0002] Hydroelectric power generation is a clean energy method that converts water energy into electrical energy, and has the characteristics of being renewable, clean and environmentally friendly, high energy efficiency, and low operating cost. Among them, a water turbine is a rotary power machine that converts the kinetic energy or potential energy of water flow into mechanical energy, and is mainly used to drive a generator to generate electricity in a hydroelectric power station, and can also be used in projects such as irrigation and pumping stations. A water turbine is the core equipment of hydroelectric power generation, and its efficiency directly affects the power generation capacity of the power station. The water turbine impacts or pushes the blades (runner) through the water flow, causing the runner to rotate, driving the generator rotor to cut the magnetic induction line, and thus generating electrical energy. Its energy conversion process is: water energy (potential energy / kinetic energy) → mechanical energy (rotation) → electrical energy (generator).

[0003] Traditional small-scale hydroelectric power generation devices are usually of a fixed structure and have the following problems: (1) complex installation, requiring customized construction and being difficult to adapt to changing terrains; (2) difficult maintenance, with core components (such as impellers and generators) not being easily disassembled; (3) poor adaptability to water flow, unable to dynamically adjust according to the water flow speed; (4) high cost, making it difficult to promote on a large scale.

[0004] In view of this, the present invention proposes a closed water circulation power generation system and method. Summary of the Invention

[0005] The present invention proposes a closed water circulation power generation system and method, which solves the problems in the related art that traditional hydroelectric power generation devices are complex to install, require customized construction, are difficult to maintain, have poor adaptability, and are high in cost, making it difficult to promote on a large scale.

[0006] The technical solution of the present invention is as follows: A closed water circulation power generation system includes: a filtering component and a plurality of power generation core modules arranged on one side of the filtering component;

[0007] The power generation core module includes a support chassis, a water turbine assembly is arranged above the support chassis, and a support bracket is arranged at the top end of the support chassis for rotatably supporting the water turbine assembly;

[0008] A water storage and diversion mechanism is arranged on the upper side of the support chassis for collecting water and impacting it towards one side of the water turbine assembly, thereby driving the water turbine assembly to rotate;

[0009] On one side of the support chassis, a transmission mechanism is provided. On one side of the transmission mechanism, a generator is provided. An installation seat for installing the generator is fixedly connected to the outer wall of the transmission mechanism. During the rotation of the water wheel assembly, the generator can be driven by the transmission mechanism.

[0010] Preferably, the support chassis between adjacent two power generation core modules can be disassembled and installed by bolts.

[0011] Preferably, the support bracket includes two vertical rods fixedly connected to the top end of the support chassis. Sliding frames are sleeved on the outer walls of the two vertical rods. A plurality of bolt holes are equidistantly arranged on the outer wall of the sliding frame. The sliding frame and the vertical rod are fixed by fastening bolts and bolt holes.

[0012] Preferably, the support bracket further includes two cross beams, and the two cross beams are fixedly connected in parallel between the two sliding frames.

[0013] Preferably, the water wheel assembly includes a rotating shaft rotatably connected between the two cross beams. A circular frame is arranged outside the rotating shaft. Water boxes are fixedly connected to the outer wall of the circular frame in an annular array. A plurality of support bars are fixedly connected between the circular frame and the rotating shaft.

[0014] Preferably, the transmission mechanism includes a support rod fixedly connected to the top end of the support chassis. An installation frame is fixedly connected between the support rod and the vertical rod. A suspension rod is fixedly connected to the outer wall of one side of the installation frame. A rotating sleeve is rotatably penetrated inside the suspension rod. A star-shaped shaft is slidably sleeved inside the rotating sleeve. The bottom end of the star-shaped shaft is fixedly connected to the top end of the rotating shaft.

[0015] Preferably, the transmission mechanism further includes a first pulley fixedly sleeved on the outer wall of the rotating sleeve, a third pulley and a second pulley respectively rotatably connected to the inner walls of the upper and lower ends of the installation frame. The third pulley and the second pulley are coaxially fixedly connected. A fourth pulley is rotatably connected to the lower side of one end of the installation frame. The fourth pulley is fixedly connected to the generator shaft. Transmission belts are connected between the first pulley and the second pulley, and between the third pulley and the fourth pulley.

[0016] Preferably, the water storage and diversion mechanism includes two support columns fixedly connected to the top end of the support chassis. A water storage frame is fixedly connected between the two support columns. A water collection frame is fixedly connected to one port of the water storage frame. A drainage frame is arranged at one end of the water storage frame away from the water collection frame. A diversion plate is rotatably connected to one side of the drainage frame through a shaft rod. Arc-shaped plates are fixedly connected to the upper and lower sides of the outer wall of the diversion plate. The arc-shaped plates are slidably sleeved inside the drainage frame. A diversion port is jointly formed by the diversion plate, the drainage frame and the two arc-shaped plates;

[0017] A transmission component for rotating the shaft rod is provided on the upper side of the water storage frame. The transmission component includes a gear fixedly connected to the top end of the shaft rod. A rack is meshed and connected to one side of the gear. A fixed block is fixedly connected to the top end of the water storage frame on one side of the rack. A lead screw is rotatably connected to the outer wall of the fixed block. A guide rod parallel to the lead screw is fixedly connected to the outer wall of the fixed block below the lead screw. The guide rod extends into the rack and is slidably connected thereto. The lead screw extends into the rack and is threadedly connected thereto. One end of the fixed block penetrates through the outer wall of the fixed block and is fixedly connected to a turntable.

[0018] Preferably, the filtering component includes two plug-in frames fixedly connected to the extension rods of the support bottom frame. An insertion rod is slidably sleeved between the two plug-in frames. A filter screen is connected between the two insertion rods.

[0019] A closed water cycle power generation method includes the following steps:

[0020] Step 1: According to actual needs, select an appropriate number of power generation core modules for assembly, install the power generation core modules at the bottom of the riverbed or channel, and install the filtering component in front of the power generation core module at the upstream port to pre-filter the water flow entering the power generation core module to avoid damage to the power generation core module caused by items such as stones and cloth bags;

[0021] Step 2: Adjust the position of the water wheel component according to the water flow height of the riverbed or channel or the water flow impact position of the diversion port. By sliding the sliding frame on the outer wall of the vertical rod, the two cross beams can be driven to adjust the height, and then the working height of the water wheel component can be adjusted. During the process of adjusting the height of the water wheel component, the star-shaped shaft can slide up and down adaptively inside the rotating sleeve;

[0022] Step 3: Adjust the structure of the water storage and diversion mechanism according to the water flow velocity of the riverbed or channel. Rotate the lead screw through the turntable. Under the guiding action of the guide rod, the rack can move along the outer wall of the lead screw, so as to rotate the gear. The gear drives the shaft rod to rotate, and the shaft rod drives the guide vane to rotate, so that the arc-shaped plate slides in the drainage frame, thereby adjusting the opening size of the diversion port;

[0023] Step 4: When the water flow rushing out of the diversion port rotates the water wheel component, the water wheel component drives the star-shaped shaft to rotate through the rotating shaft thereon. The star-shaped shaft drives the rotating sleeve to rotate. The rotating sleeve drives the first pulley to rotate. Under the action of the transmission belt, the second pulley rotates rapidly. Then, the second pulley drives the fourth pulley to rotate through the third pulley and the transmission belt. The fourth pulley drives the machine shaft on the generator to rotate, realizing the conversion of mechanical energy into electrical energy.

[0024] The working principle and beneficial effects of the present invention are:

[0025] 1. In the present invention, by adopting modular structural design, according to actual needs, an appropriate number of power generation core modules can be selected for assembly and splicing, the operation is simple and convenient, and rapid assembly and disassembly can be achieved. In addition, the modular design enables the power generation modules to be disassembled and installed separately, reducing downtime and facilitating later repair and maintenance. The modular design supports a variety of combination methods and can adapt to a variety of scenarios such as streams, pipelines, channels, etc., and has good adaptability;

[0026] 2. In the present invention, by setting a support bracket, the working height of the water wheel assembly can be adjusted according to the height of the water flow in the riverbed or channel or the position of the diversion port on the water storage diversion mechanism. In the process of adjusting the height of the water wheel assembly, the star-shaped shaft can be adjusted to rise and fall and slide inside the rotating sleeve accordingly, which will not affect the normal driving of the generator by the transmission mechanism. In addition, the present invention can adjust the structure of the water storage diversion mechanism according to the flow velocity of the riverbed or channel. The transmission component drives the diversion plate to rotate through the shaft rod, so that the arc plate can be twitched in the drainage frame, thereby adjusting the opening size of the diversion port, which can well adapt to seasonal water flow changes. With the increase in the speed of the transmission mechanism, it can significantly improve the power generation efficiency;

[0027] 3. The present invention has a simple structure, ingenious design, and low cost. It can effectively reduce manufacturing costs through standardized production and is suitable for promotion in remote areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a schematic diagram of the assembly structure of a closed water cycle power generation system proposed by the present invention;

[0030] Figure 2 This is a schematic diagram of the assembly structure of the power generation core module proposed by the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the filter assembly proposed by the present invention;

[0032] Figure 4 This is a schematic diagram of the structural composition of the support bracket and water wheel assembly proposed by the present invention;

[0033] Figure 5 This is a schematic diagram of the transmission mechanism structure proposed by the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the transmission component proposed by the present invention;

[0035] Figure 7Schematic three-dimensional structure diagram of the transmission component proposed by the present invention;

[0036] In the figure: 1. Power generation core module; 11. Water storage and diversion mechanism; 111. Water storage frame; 112. Support column; 113. Water collection frame; 114. Drainage frame; 115. Deflector; 116. Arc plate; 117. Diversion port; 118. Shaft rod; 119. Transmission component; 1191. Rack; 1192. Gear; 1193. Lead screw; 1194. Fixed block; 1195. Turntable; 1196. Guide rod; 12. Support chassis; 13. Support bracket; 131. Vertical rod; 132. Slide frame; 133. Bolt hole; 134. Cross beam; 135. Tightening bolt; 14. Generator; 15. Mounting seat; 16. Transmission mechanism; 161. Support rod; 162. Mounting frame; 163. Suspension rod; 164. Rotating sleeve; 165. First pulley; 166. Star shaft; 167. Second pulley; 168. Third pulley; 169. Fourth pulley; 17. Water wheel assembly; 171. Circular frame; 172. Rotating shaft; 173. Water box; 174. Support strip; 2. Filter assembly; 21. Insertion frame; 22. Insertion rod; 23. Filter screen. Detailed implementation manners

[0037] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] Please refer to Figure 1 、 Figure 2 and Figure 4 , a closed water circulation power generation system and method, including: a filter assembly 2 and a plurality of power generation core modules 1 arranged on one side of the filter assembly 2.

[0040] Specifically, the power generation core module 1 includes a support chassis 12, a water wheel assembly 17 is arranged above the support chassis 12, and a support bracket 13 is arranged at the top of the support chassis 12 for rotatably supporting the water wheel assembly 17.

[0041] Furthermore, the support chassis 12 on two adjacent power generation core modules 1 can be disassembled and assembled by bolts. The support bracket 13 includes two vertical rods 131 fixedly connected to the top end of the support chassis 12. Slide frames 132 are slidably sleeved on the outer walls of the two vertical rods 131. A plurality of bolt holes 133 are equidistantly formed in the outer wall of the slide frame 132. The slide frame 132 and the vertical rod 131 are fixed by fastening bolts 135 and the bolt holes 133. The support bracket 13 further includes two cross beams 134, and the two cross beams 134 are fixedly connected in parallel between the two slide frames 132.

[0042] Furthermore, the water turbine assembly 17 includes a rotating shaft 172 rotatably connected between the two cross beams 134. A circular frame 171 is arranged on the outer side of the rotating shaft 172. Water boxes 173 are fixedly connected to the outer wall of the circular frame 171 in an annular array. A plurality of support bars 174 are fixedly connected between the circular frame 171 and the rotating shaft 172.

[0043] In this embodiment, according to actual requirements, an appropriate number of power generation core modules 1 are selected for assembly, and the power generation core modules 1 are installed at the bottom of the riverbed or the channel. According to the water flow height of the riverbed or the channel, the position of the water turbine assembly 17 is adjusted. By sliding the slide frame 132 on the outer wall of the vertical rod 131, the two cross beams 134 are driven to adjust the height, and thus the working height of the water turbine assembly 17 can be adjusted. During the process of adjusting the height of the water turbine assembly 17, the star-shaped shaft 166 can slide up and down adaptively inside the rotating sleeve 164.

[0044] Embodiment 2

[0045] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 A closed water circulation power generation system and method, including all the contents of Embodiment 1. In addition, a water storage and diversion mechanism 11 is arranged on the upper side of the support chassis 12, which is used to impact the water turbine assembly 17 after collecting water, so as to drive the water turbine assembly 17 to rotate.

[0046] Specifically, the water storage and diversion mechanism 11 includes two support columns 112 fixedly connected to the top end of the support chassis 12. A water storage frame 111 is fixedly connected between the two support columns 112. A water collection frame 113 is fixedly connected to one port of the water storage frame 111. A drainage frame 114 is arranged at the end of the water storage frame 111 away from the water collection frame 113. A diversion plate 115 is rotatably connected to one side of the drainage frame 114 through a shaft rod 118. Arc-shaped plates 116 are fixedly connected to the upper and lower sides of the outer wall of the diversion plate 115. The arc-shaped plates 116 are slidably sleeved inside the drainage frame 114. A diversion port 117 is jointly formed among the diversion plate 115, the drainage frame 114 and the two arc-shaped plates 116.

[0047] A transmission component 119 for rotating the shaft 118 is provided on the upper side of the water storage frame 111, and the transmission component 119 includes a gear 1192 fixedly connected to the top of the shaft 118, and a rack 1191 is meshingly connected to one side of the gear 1192, and a fixed block 1194 is fixedly connected to the top of the water storage frame 111 on one side of the rack 1191, and a screw rod 1193 is rotatably connected to the outer wall of the fixed block 1194, and a guide rod 1196 parallel to the screw rod 1193 is fixedly connected to the outer wall of the fixed block 1194 located at the lower side of the screw rod 1193, and the guide rod 1196 extends to the inside of the rack 1191 and is slidably connected thereto, and the screw rod 1193 extends to the inside of the rack 1191 and is threadedly connected thereto, and one end of the fixed block 1194 passes through the outer wall of the fixed block 1194 and is fixedly connected to a turntable 1195.

[0048] The filter assembly 2 includes two plug-in frames 21 fixedly connected to the extension rod of the support frame 12 , a plug-in rod 22 is slidably sleeved between the two plug-in frames 21 , and a filter screen 23 is connected between the two plug-in rods 22 .

[0049] In this embodiment, the filter assembly 2 is installed at the front side of the power generation core module 1 located at the upstream port, and is used to pre-filter the water flow entering the power generation core module 1 to prevent stones, cloth bags and other objects from damaging the power generation core module 1. According to the flow rate of the riverbed or channel water, the structure of the water storage and diversion mechanism 11 is adjusted accordingly, and the screw rod 1193 is rotated by the turntable 1195. Under the guidance of the guide rod 1196, the rack 1191 can move along the outer wall of the screw rod 1193, so that the gear 1192 can be rotated, and the gear 1192 drives the shaft rod 118 to rotate, and the shaft rod 118 drives the guide plate 115 to rotate, so that the arc plate 116 is twitched in the drainage frame 114, so that the opening size of the diversion port 117 can be adjusted.

[0050] Example 3

[0051] See also Figure 2 , Figure 4 as well as Figure 5 , a closed water cycle power generation system and method, including all the contents of Example 2, in addition, a transmission mechanism 16 is provided on one side of the support frame 12, a generator 14 is provided on one side of the transmission mechanism 16, a mounting seat 15 for mounting the generator 14 is fixedly connected to the outer wall of the transmission mechanism 16, and the generator 14 can be driven by the transmission mechanism 16 during the rotation of the water wheel assembly 17. It should be noted that in actual use, the generator 14 can be sealed and protected by providing a sealing frame on the outside of the generator 14 to avoid the risk of short circuit and the like caused by the impact of water flow on the generator 14.

[0052] Specifically, the transmission mechanism 16 includes a support rod 161 fixedly connected to the top end of the support chassis 12. An installation frame 162 is fixedly connected between the support rod 161 and the vertical rod 131. A suspension rod 163 is fixedly connected to the outer wall of one side of the installation frame 162. A rotating sleeve 164 is rotatably penetrated through the inside of the suspension rod 163. A star-shaped shaft 166 is slidably sleeved inside the rotating sleeve 164. The bottom end of the star-shaped shaft 166 is fixedly connected to the top end of the rotating shaft 172.

[0053] Furthermore, the transmission mechanism 16 further includes a first pulley 165 fixedly sleeved on the outer wall of the rotating sleeve 164, a third pulley 168 and a second pulley 167 respectively rotatably connected to the inner walls of the upper and lower ends of the installation frame 162. The third pulley 168 and the second pulley 167 are coaxially fixedly connected. A fourth pulley 169 is rotatably connected to the lower side of one end of the installation frame 162. The fourth pulley 169 is fixedly connected to the machine shaft of the generator 14. Transmission belts are connected between the first pulley 165 and the second pulley 167, and between the third pulley 168 and the fourth pulley 169.

[0054] In this embodiment, when the water flow rushing out from the diversion port 117 rotates the water wheel assembly 17, the water wheel assembly 17 drives the star-shaped shaft 166 to rotate through the rotating shaft 172 thereon. The star-shaped shaft 166 drives the rotating sleeve 164 to rotate. The rotating sleeve 164 drives the first pulley 165 to rotate. Under the action of the transmission belt, the second pulley 167 rotates rapidly. Then, the second pulley 167 drives the fourth pulley 169 to rotate through the third pulley 168 and the transmission belt. The fourth pulley 169 drives the machine shaft on the generator 14 to rotate, realizing the conversion of mechanical energy into electrical energy.

[0055] Working principle and usage process:

[0056] First of all, according to actual needs, select an appropriate number of power generation core modules 1 for assembly, and install the power generation core modules 1 at the bottom of the riverbed or channel. Install the filtering component 2 in front of the power generation core module 1 at the upstream port to pre-filter the water flow entering the power generation core module 1 and avoid damage to the power generation core module 1 caused by items such as stones and cloth bags.

[0057] Next, according to the water flow height of the riverbed or channel or the water flow impact position of the diversion port 117, adjust the position of the water wheel assembly 17. By sliding the sliding frame 132 on the outer wall of the vertical rod 131, the heights of the two cross beams 134 are driven to be adjusted, and then the working height of the water wheel assembly 17 can be adjusted. During the process of adjusting the height of the water wheel assembly 17, the star-shaped shaft 166 can slide up and down adaptively inside the rotating sleeve 164.

[0058] After that, according to the water flow velocity of the riverbed or channel, the structure of the water storage and diversion mechanism 11 is adjusted accordingly. By rotating the screw rod 1193 through the turntable 1195, under the guiding action of the guiding rod 1196, the rack 1191 can move along the outer wall of the screw rod 1193, so that the gear 1192 can be rotated. The gear 1192 drives the shaft rod 118 to rotate, and the shaft rod 118 drives the guide vane 115 to rotate, so that the arc-shaped plate 116 slides in the drainage frame 114, thereby enabling adjustment of the opening size of the diversion port 117.

[0059] When working, when the water flow rushing out from the diversion port 117 rotates the water wheel assembly 17, the water wheel assembly 17 drives the star-shaped shaft 166 to rotate through the rotating shaft 172 thereon. The star-shaped shaft 166 drives the rotating sleeve 164 to rotate, and the rotating sleeve 164 drives the first belt pulley 165 to rotate. Under the action of the transmission belt, the second belt pulley 167 rotates rapidly. Then, the second belt pulley 167 drives the fourth belt pulley 169 to rotate through the third belt pulley 168 and the transmission belt, and the fourth belt pulley 169 drives the machine shaft of the generator 14 to rotate, realizing the conversion of mechanical energy into electrical energy.

[0060] It should be noted that those related to circuits, electronic components and modules in the present invention are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present invention does not involve improvements to software and methods.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A closed water cycle power generation system, characterized in that: include: A filter assembly (2) and a plurality of power generation core modules (1) arranged on one side of the filter assembly (2); The power generation core module (1) comprises a supporting frame (12), a water wheel assembly (17) is arranged above the supporting frame (12), and a supporting bracket (13) is arranged at the top of the supporting frame (12) for rotatably supporting the water wheel assembly (17); A water storage and diversion mechanism (11) is provided on the upper side of the supporting chassis (12) for collecting water and impacting the water toward one side of the water wheel assembly (17), thereby driving the water wheel assembly (17) to rotate; A transmission mechanism (16) is provided on one side of the support base frame (12), a generator (14) is provided on one side of the transmission mechanism (16), a mounting seat (15) for mounting the generator (14) is fixedly connected to the outer wall of the transmission mechanism (16), and the generator (14) can be driven by the transmission mechanism (16) during the rotation of the water wheel assembly (17).

2. A closed water cycle power generation system according to claim 1, characterized in that: The supporting base frames (12) on two adjacent power generation core modules (1) can be installed and removed by means of bolts.

3. A closed water cycle power generation system according to claim 2, characterized in that: The support bracket (13) comprises two vertical poles (131) fixedly connected to the top of the support base frame (12); the outer walls of the two vertical poles (131) are slidably sleeved with a sliding frame (132); the outer wall of the sliding frame (132) is provided with a plurality of bolt holes (133) at equal intervals; the sliding frame (132) and the vertical poles (131) are fixed by fastening bolts (135) and the bolt holes (133).

4. A closed water cycle power generation system according to claim 3, characterized in that: The support bracket (13) further comprises two cross beams (134), wherein the two cross beams (134) are fixedly connected in parallel between the two sliding frames (132).

5. A closed water cycle power generation system according to claim 4, characterized in that: The water wheel assembly (17) comprises a rotating shaft (172) rotatably connected between the two cross beams (134); a circular frame (171) is arranged outside the rotating shaft (172); a water box (173) is fixedly connected to the outer wall of the circular frame (171) in an annular array; and a plurality of support bars (174) are fixedly connected between the circular frame (171) and the rotating shaft (172).

6. A closed water cycle power generation system according to claim 5, characterized in that: The transmission mechanism (16) comprises a supporting rod (161) fixedly connected to the top of the supporting base frame (12); a mounting frame (162) is fixedly connected between the supporting rod (161) and the vertical rod (131); a suspension rod (163) is fixedly connected to an outer wall of one side of the mounting frame (162); a rotating sleeve (164) is rotatably passed through the interior of the suspension rod (163); a star-shaped shaft (166) is provided on the inner sliding sleeve of the rotating sleeve (164); and the bottom end of the star-shaped shaft (166) is fixedly connected to the top end of the rotating shaft (172).

7. A closed water cycle power generation system according to claim 6, characterized in that: The transmission mechanism (16) further comprises a first pulley (165) fixedly sleeved on the outer wall of the rotating sleeve (164), a third pulley (168) and a second pulley (167) rotatably connected to the inner walls of the upper and lower ends of the mounting frame (162), respectively; the third pulley (168) and the second pulley (167) are coaxially fixedly connected; a fourth pulley (169) is rotatably connected to the lower side of one end of the mounting frame (162); the fourth pulley (169) is fixedly connected to the shaft of the generator (14); and a transmission belt is connected between the first pulley (165) and the second pulley (167), and between the third pulley (168) and the fourth pulley (169).

8. A closed water cycle power generation system according to claim 7, characterized in that: The water storage and diversion mechanism (11) comprises two support columns (112) fixedly connected to the top of the support base frame (12); a water storage frame (111) is fixedly connected between the two support columns (112); a water collection frame (113) is fixedly connected to one end of the water storage frame (111); a drainage frame (114) is arranged at one end of the water storage frame (111) away from the water collection frame (113); a guide plate (115) is rotatably connected to one side of the drainage frame (114) through an axle rod (118); an arc plate (116) is fixedly connected to the upper and lower sides of the outer wall of the guide plate (115); the arc plate (116) is slidably sleeved on the inner side of the drainage frame (114); the guide plate (115), the drainage frame (114) and the two arc plates (116) together form a diversion port (117); A transmission component (119) for rotating the shaft (118) is arranged on the upper side of the water storage frame (111), and the transmission component (119) comprises a gear (1192) fixedly connected to the top end of the shaft (118), one side of the gear (1192) is meshingly connected to a rack (1191), the top end of the water storage frame (111) on one side of the rack (1191) is fixedly connected to a fixed block (1194), and the outer wall of the fixed block (1194) is rotatably connected to a screw rod (119 3) A guide rod (1196) parallel to the screw rod (1193) is fixedly connected to the outer wall of the fixed block (1194) located at the lower side of the screw rod (1193); the guide rod (1196) extends into the interior of the rack (1191) and is slidably connected thereto; the screw rod (1193) extends into the interior of the rack (1191) and is threadedly connected thereto; one end of the fixed block (1194) passes through the outer wall of the fixed block (1194) and is fixedly connected to a turntable (1195).

9. A closed water cycle power generation system according to claim 8, characterized in that: The filter assembly (2) comprises two plug-in frames (21) fixedly connected to the extension rod of the support base frame (12), a plug-in rod (22) is slidably sleeved between the two plug-in frames (21), and a filter screen (23) is connected between the two plug-in rods (22).

10. A closed water cycle power generation method, using any closed water cycle power generation system as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: According to actual needs, select an appropriate number of power generation core modules (1) for assembly, install the power generation core modules (1) on the riverbed or channel bottom, and install the filter assembly (2) on the front side of the power generation core module (1) located at the upstream port to pre-filter the water flow entering the power generation core module (1) to prevent stones, cloth bags and other objects from damaging the power generation core module (1); Step 2: According to the height of the water flow in the riverbed or channel or the water flow impact position of the diversion port (117), the position of the water wheel assembly (17) is adjusted, and the sliding frame (132) is slid on the outer wall of the vertical rod (131), thereby driving the two cross beams (134) to adjust the height, and then the working height of the water wheel assembly (17) can be adjusted. In the process of adjusting the height of the water wheel assembly (17), the star-shaped shaft (166) can be lifted and slid inside the rotating sleeve (164) in a corresponding manner; Step 3: According to the flow velocity of the riverbed or channel, the structure of the water storage and diversion mechanism (11) is adjusted accordingly, the screw rod (1193) is rotated by the rotating disk (1195), and under the guidance of the guide rod (1196), the rack (1191) can move along the outer wall of the screw rod (1193), so that the gear (1192) can be rotated, the gear (1192) drives the shaft rod (118) to rotate, and the shaft rod (118) drives the guide plate (115) to rotate, so that the arc plate (116) is pulled in the drainage frame (114), so that the opening size of the diversion port (117) can be adjusted; Step 4: When the water flow rushing out of the diversion port (117) rotates the water wheel assembly (17), the water wheel assembly (17) drives the star shaft (166) to rotate through the rotating shaft (172) thereon, the star shaft (166) drives the rotating sleeve (164) to rotate, the rotating sleeve (164) drives the first pulley (165) to rotate, under the action of the transmission belt, the second pulley (167) rotates rapidly, then, the second pulley (167) drives the fourth pulley (169) to rotate through the third pulley (168) and the transmission belt, and the fourth pulley (169) drives the shaft on the generator (14) to rotate, so as to realize the conversion of mechanical energy into electrical energy.

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