A hydroelectric generator

Abstract

The application relates to the field of power generation equipment, in particular to a water turbine, which comprises a first shell and a second shell, one side of the first shell is detachably connected with one side of the second shell, a hanging rope is installed on the side of the first shell far from the second shell, a battery and a circuit board are fixedly installed in the first shell, a charging interface is installed on the side of the first shell close to the second shell, a turbine is fixedly installed in the second shell, the charging interface, the turbine and the battery are electrically connected with the circuit board, a rotating shaft of the turbine penetrates through the side of the second shell far from the first shell, the rotating shaft of the turbine is fixedly installed with a rotating table, a plurality of blades are installed on the rotating table, a plurality of containing grooves are arranged on the circumferential side of the second shell, flexible sheets are fixedly installed on the grooves of the containing grooves, a supporting assembly is installed on the second shell, and the supporting assembly is used for supporting the flexible sheets. The application has the effect of improving the portability of the turbine.

Description

Technical Field

[0001] This application relates to the field of power generation equipment, and in particular to a hydroelectric generator. Background Technology

[0002] Portable hydroelectric generators are generally used for fieldwork, outdoor exploration, etc., to meet some basic power needs, such as charging electronic devices such as mobile phones and tablets, and powering lighting equipment.

[0003] In existing technology, portable hydroelectric generators generally include a cylindrical first housing and a second housing, with one side of the first housing detachably connected to one side of the second housing. A lanyard is installed on the side of the first housing away from the second housing. A battery and circuit board are installed inside the first housing. A charging interface is fixedly installed on the side of the first housing closer to the second housing. A turbine is fixedly installed inside the second housing. The charging interface, turbine, and battery are all electrically connected to the circuit board. The turbine's rotating shaft passes through the side of the second housing away from the first housing, and multiple blades are mounted on the turbine's rotating shaft. To enable portable hydroelectric generators to float and generate electricity in water, the volume of the first and second housings is typically increased while keeping the internal components such as the battery and turbine unchanged, thereby increasing buoyancy to allow the generator to float.

[0004] However, while increasing the volume of the first and second shells can ensure that the generator floats, it will result in an excessively large generator that is not easy to carry and cannot meet the needs of portable devices for easy movement and use. Summary of the Invention

[0005] To improve the portability of generators, this application provides a hydroelectric generator.

[0006] This application provides a hydroelectric generator, which adopts the following technical solution: A hydroelectric generator includes a first housing and a second housing. One side of the first housing is detachably connected to one side of the second housing. A hanging rope is installed on the side of the first housing away from the second housing. A battery and a circuit board are fixedly installed inside the first housing. A charging interface is installed on the side of the first housing close to the second housing. A turbine is fixedly installed inside the second housing. The charging interface, turbine, and battery are all electrically connected to the circuit board. The rotating shaft of the turbine passes through the side of the second housing away from the first housing. A rotating platform is fixedly installed on the rotating shaft of the turbine. Multiple blades are installed on the rotating platform. Multiple receiving slots are formed on the periphery of the second housing. Flexible sheets are fixedly installed at the openings of the receiving slots. A support assembly is installed on the second housing to support the flexible sheets.

[0007] By adopting the above technical solution, the hydroelectric generator can use water flow to drive the blades to generate electricity and charge the battery; the receiving groove, flexible sheet and support assembly on the periphery of the second shell cooperate to allow the support assembly to expand the flexible sheet when the generator is placed in water so that the generator floats and generates electricity, and the flexible sheet is retracted when not in use to reduce the size of the generator, making it easy to carry and reducing the problems caused by increasing the size of the shell.

[0008] Optionally, it also includes a lampshade, wherein a first boss is fixedly installed on the side of the first housing near the blade, and a sleeve is fixedly installed on the side of the second housing near the first housing. The sleeve is threaded onto the first boss. The lampshade has an opening on one side and is damped by the opening when it is fitted onto the first boss. A light bulb is fixedly installed on the side of the first housing near the second housing and is electrically connected to the circuit board.

[0009] By adopting the above technical solution, the first boss is threaded onto the sleeve, and the lampshade is fitted onto the first boss through an opening damping mechanism, which facilitates the installation and removal of the lampshade.

[0010] Optionally, the support assembly includes a drive ring and multiple support plates. A second boss is fixedly installed on the side of the second housing near the blade. The rotary table abuts against the side of the second boss away from the second housing. The drive ring is threaded onto the second boss. Multiple telescopic openings are provided on the side of the second housing away from the first housing. The multiple telescopic openings are arranged around the second boss. The telescopic openings communicate with the receiving groove. One side of the support plate is fixedly connected to the receiving groove near the inner wall of the first housing. The other side of the support plate passes through the telescopic opening.

[0011] By adopting the above technical solution, the drive ring is threaded onto the second boss. When the drive ring is rotated, it can move along the second boss. When the drive ring moves, it can compress the support plate, thereby bending the support plate and facilitating the expansion of the flexible plate.

[0012] Optionally, the receiving groove is provided with multiple elastic ropes, both ends of which are fixedly connected to a flexible sheet, and the elastic ropes and the flexible sheet surround the support sheet.

[0013] By adopting the above technical solution, an elastic rope is set in the receiving groove, with both ends fixedly connected to the flexible sheet and together with the flexible sheet surrounding the support sheet, so that when the support sheet is restored, the flexible sheet will be restored along with the support sheet.

[0014] Optionally, the second boss has multiple coaxially arranged sealing grooves with different diameters on the side away from the second housing, and multiple coaxially arranged sealing rings with different diameters are fixedly installed on the side of the rotary table close to the second housing, with the sealing rings passing through the sealing grooves.

[0015] By adopting the above technical solution, the sealing groove of the second boss cooperates with the sealing ring of the rotating table, which can improve the sealing performance between the second boss and the rotating table and reduce the occurrence of water entering the interior of the second housing.

[0016] Optionally, the support assembly is arranged in an arc shape when the flexible sheet is driven to expand, and the number of receiving slots gradually decreases from one side of the second housing to the other.

[0017] By adopting the above technical solution, the side with more flexible plates has more buoyancy, resulting in greater buoyancy on that side. When the generator is placed in the water, the side with more flexible plates will be on top, and the side with fewer flexible plates will be on the bottom. According to Bernoulli's principle, the water flow velocity is faster on the side with more flexible plates and slower on the side with fewer flexible plates, which can drive the generator to float.

[0018] Optionally, the rotary table is threaded with a limiting ring, the rotary table has an installation groove, one end of the blade is hinged inside the installation groove, the limiting ring has a clearance groove for avoiding the blade, and the inner side wall of the clearance groove has a limiting groove for the blade to enter.

[0019] By adopting the above technical solution, the rotating blades can be deployed and retracted. When not in use, the blades can be retracted to reduce the space occupied by the generator and make it easier to carry; when in use, the blades can be deployed and fixed in the limiting groove to ensure stable operation of the blades, allowing the water flow to effectively drive the blades to rotate and improve power generation efficiency.

[0020] Optionally, a partition is fixedly installed inside the second housing, through which the turbine's rotating shaft rotatably passes.

[0021] By adopting the above technical solution, when water flows in from the gap between the turbine's rotating shaft and the second housing, the baffle can block the water and reduce the probability of water contacting the turbine.

[0022] Optionally, the inner wall of the second housing is provided with a connecting hole, which is used to connect the receiving groove and the interior of the second housing. The connecting hole is located on the side of the partition away from the first housing.

[0023] By adopting the above technical solution, when water flows in from the gap between the turbine's rotating shaft and the second housing, it enters the receiving tank through the connecting hole, causing the weight of the second housing to increase and gradually tilt away from the first housing. After tilting, the water returns from the receiving tank to the inside of the second housing. Because the amount of water returning is large, it can cover the gap between the turbine's rotating shaft and the second housing, achieving a liquid seal effect.

[0024] Optionally, a first shielding tube is fixedly installed on the side of the partition away from the first housing, and a second shielding tube is fixedly installed on the end of the first shielding tube away from the partition. Both the first shielding tube and the second shielding tube are sleeved on the rotating shaft of the turbine. The inner wall of the first shielding tube abuts against the rotating shaft of the turbine, and the inner diameter of the second shielding tube gradually increases from the end near the first shielding tube to the other end and is inclined.

[0025] By adopting the above technical solution, the inner wall of the first shielding pipe abuts against the rotating shaft, and the inner diameter of the second shielding pipe is increased by inclination, which can protect the turbine rotating shaft, reduce the entry of water or impurities into the turbine, improve the stability of turbine operation, and thus ensure the power generation performance of the generator.

[0026] In summary, this application includes at least one of the following beneficial technical effects: By opening a receiving groove on the periphery of the second housing, installing a flexible sheet in the groove, and setting a support assembly to expand the flexible sheet, the generator can float and generate electricity when placed in water. When the generator is not in use, the support assembly can retract the flexible sheet, reducing the size of the generator and making it easy to carry. The drive ring of the support component is threaded onto the second boss, and the support plate passes through the telescopic opening. The flexible plate can be opened or retracted by rotating the drive ring, making operation convenient. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure when the contents are stored in Embodiment 1 of this application; Figure 2 This is an exploded view of the first housing and lampshade in Embodiment 1 of this application; Figure 3 yes Figure 1 Sectional view at AA; Figure 4 This is a schematic diagram of the second shell structure when the blade is stored in Embodiment 1 of this application; Figure 5 yes Figure 3 Enlarged view at point A; Figure 6 yes Figure 3 Enlarged view at point B; Figure 7 This is a schematic diagram of the second shell structure when the blades of Embodiment 1 of this application are deployed; Figure 8 This is a top view of the second housing after the blades have been removed in Embodiment 2 of this application; Figure 9 This is a radial cross-sectional view of the second shell when the blades of Embodiment 3 of this application are deployed; Figure 10 yes Figure 9 Enlarged view at point C.

[0028] Explanation of reference numerals in the attached drawings: 1. First housing; 2. Second housing; 3. Battery; 4. Circuit board; 5. First boss; 6. Second boss; 7. Sleeve; 8. Turbine; 9. Conductive spring pin; 10. Conductive base; 11. Blade; 12. Hanging rope; 13. Charging interface; 14. Light bulb; 15. Lampshade; 16. Sealing groove; 17. Sealing ring; 18. Receiving groove; 19. Flexible sheet; 20. Support assembly; 201. Drive ring; 202. Support piece; 21. Telescopic port; 22. Elastic rope; 23. Limiting ring; 24. Mounting groove; 25. Clearance groove; 26. Limiting groove; 27. Partition; 28. First shielding tube; 29. ​​Second shielding tube; 30. Connecting hole; 31. Rotary table. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail. Example 1

[0030] This application discloses a hydroelectric generator.

[0031] Reference Figure 1 , Figure 2 , Figure 3 A hydroelectric generator includes a first housing 1 and a second housing 2. A battery 3 and a circuit board 4 are fixedly installed inside the first housing 1. A first boss 5 is fixedly installed on one side of the first housing 1, and a sleeve 7 is fixedly installed on one side of the second housing 2, with the sleeve 7 threaded onto the first boss 5. A turbine 8 is fixedly installed inside the second housing 2. The sleeve 7 is screwed into the first boss 5, thereby achieving a detachable connection between the first housing 1 and the second housing 2. After the sleeve 7 is screwed into the first boss 5, it is sealed by an O-ring. The rotor and stator of the turbine 8 are waterproofed by wrapping them with waterproof insulating tape.

[0032] Reference Figure 2 , Figure 4 A conductive spring pin 9 is fixedly installed on the side of the second housing 2 closest to the first housing 1, and a conductive seat 10 is fixedly installed on the side of the first housing 1 closest to the second housing 2. Both the conductive seat 10 and the battery 3 are electrically connected to the circuit board 4, and the conductive spring pin 9 is electrically connected to the turbine 8. After the sleeve 7 is screwed into the first boss 5, the conductive spring pin 9 abuts against the conductive seat 10, thereby achieving the electrical connection between the turbine 8 and the circuit board 4.

[0033] Reference Figure 1 , Figure 3 The rotating shaft of the turbine 8 passes through the side of the second housing 2 away from the first housing 1. A rotating platform 31 is fixedly installed on the rotating shaft of the turbine 8, and multiple blades 11 are installed on the rotating platform 31. A hanging rope 12 is fixedly installed on the side of the first housing 1 away from the second housing 2.

[0034] Tighten the hanging rope 12 and place the generator in the water. The water flow drives the blades 11 to rotate, and the turbine 8 converts mechanical energy into electrical energy, which is then input into the circuit board 4. The charging circuit on the circuit board 4 charges the battery 3 with electrical energy.

[0035] Reference Figure 2 A charging interface 13 is fixedly installed on the side of the first protrusion 5 away from the first housing 1, and the charging interface 13 is electrically connected to the circuit board 4 via a wire. When power is needed for mobile phones, lighting equipment, etc., the battery 3 is drawn through the charging interface 13.

[0036] Reference Figure 2 A light bulb 14 is fixedly installed on the side of the first housing 1 near the second housing 2, and the light bulb 14 is electrically connected to the circuit board 4. When the light bulb 14 is turned on, the light bulb 14 draws power from the battery 3. The first housing 1 is provided with a lampshade 15, which has an opening on one side and is damped by the opening and fitted onto the first boss 5.

[0037] Reference Figure 3 , Figure 5 A second boss 6 is fixedly installed on the side of the second housing 2 near the blade 11, and a rotating platform 31 abuts against the side of the second boss 6 away from the second housing 2. Multiple coaxial sealing grooves 16 of different diameters are formed on the side of the second boss 6 away from the second housing 2. Multiple coaxial sealing rings 17 of different diameters are fixedly installed on the side of the rotating platform 31 near the second housing 2, and the sealing rings 17 pass through the sealing grooves 16. The cooperation between the sealing grooves 16 and the sealing rings 17 reduces the possibility of water leakage into the interior of the second housing 2.

[0038] Reference Figure 3 , Figure 6 The second housing 2 has multiple receiving grooves 18 on its periphery, and flexible sheets 19 are fixedly installed at the openings of the receiving grooves 18. The second housing 2 is equipped with a support assembly 20, which includes a drive ring 201 and multiple support sheets 202.

[0039] Reference Figure 6 , Figure 7 The drive ring 201 is threaded onto the second boss 6. Multiple telescopic openings 21 are provided on the side of the second housing 2 away from the first housing 1, surrounding the second boss 6 and communicating with the receiving groove 18. One side of the support plate 202 is fixedly connected to the inner wall of the receiving groove 18 near the first housing 1, and the other side of the support plate 202 passes through the telescopic opening 21. Multiple elastic ropes 22 are provided inside the receiving groove 18, with both ends of the elastic ropes 22 fixedly connected to a flexible sheet 19. The elastic ropes 22 and the flexible sheet 19 surround the support plate 202. The drive ring 201 is also equipped with an O-ring for sealing.

[0040] When the drive ring 201 is screwed into the second boss 6, the drive ring 201 compresses the support plate 202, causing the support plate 202 to bend. The bent support plate 202 expands the flexible plate 19, thereby increasing the generator's volume and facilitating its floating in water. When it is necessary to store the generator, the drive ring 201 is screwed out from the second boss 6, and the support plate 202 returns to its original position, thus reducing the generator's volume and making it easier to store.

[0041] The support plate 202 bends to expand the flexible plate 19, so that the flexible plate 19 is arc-shaped on the outer wall of the second housing 2, thereby playing a guiding role.

[0042] Reference Figure 7 The rotary table 31 is threaded with a limiting ring 23, and the rotary table 31 has a mounting groove 24. One end of the blade 11 is hinged to the inside of the mounting groove 24, and the limiting ring 23 has a clearance groove 25 for avoiding the blade 11. The inner side wall of the clearance groove 25 has a limiting groove 26 for the blade 11 to enter.

[0043] When the generator is needed, the blade 11 is rotated to unfold, and the blade 11 enters the mounting slot 24 and the clearance slot 25. Then, the blade 11 is rotated to allow it to be damped and inserted into the limiting slot 26. The limiting slot 26 restricts the blade 11, thereby reducing the likelihood of the blade 11 automatically retracting under the force of the water flow. When the generator needs to be stored, the blade 11 is pulled out of the limiting slot 26, and then rotated to retract, thus facilitating the storage of the generator.

[0044] Reference Figure 1 The diameter of the second protrusion 6 is smaller than the diameter of the first protrusion 5, so that the lamp cover 15 can be loosely fitted into the second protrusion 6. However, since the support piece 202 surrounds the second protrusion 6, the diameter of the circle surrounded by multiple support pieces 202 is larger than the lamp cover 15, and the support piece 202 bends into the interior of the lamp cover 15, thus facilitating the storage of the generator.

[0045] The implementation principle of a hydroelectric generator according to an embodiment of this application is as follows: When using the generator, the support assembly 20 expands the flexible sheet 19, thereby increasing the volume of the generator and facilitating its floating in the water for power generation. When it is necessary to store the generator, the support assembly 20 loosens the flexible sheet 19, and the flexible sheet 19 retracts into the receiving groove 18 along with the support sheet 202 under the action of the elastic rope 22, thus facilitating the storage of the generator. When storing the generator, the lampshade 15 is fitted onto the second protrusion 6, and the lampshade 15 covers the support sheet 202 and the blades 11, thereby providing protection.

[0046] In existing technologies, lightweight materials are sometimes used to make generators float in water. However, deliberately using lightweight materials increases the difficulty and cost of manufacturing the generator. This application, on the other hand, uses the expansion and contraction of the flexible sheet 19 to make the generator float in water, which is also easy to carry, thereby reducing the difficulty and cost of manufacturing the generator.

[0047] The larger the capacity of battery 3, the greater its weight and volume, resulting in an increase in the weight of the first housing 1. In another embodiment, the first housing 1 may also be provided with structures such as a receiving groove 18, a flexible sheet 19, and a support assembly 20 to increase buoyancy. Example 2

[0048] This application discloses a hydroelectric generator.

[0049] Reference Figure 8 The difference between the hydroelectric generator of this application embodiment and embodiment 1 is that the number of receiving tanks 18 gradually decreases from one side of the second housing 2 to the other side.

[0050] The implementation principle of a hydroelectric generator according to an embodiment of this application is as follows: the side with more receiving tanks 18 corresponds to the side with more flexible sheets 19. After the flexible sheets 19 are expanded, the side with more receiving tanks 18 has greater buoyancy, so that when the generator is in the water, the side with more receiving tanks 18 remains on top, and the side with fewer receiving tanks 18 is on the bottom.

[0051] Furthermore, the flexible sheet 19 expands into an arc shape to guide the flow, resulting in a faster flow velocity on the side with more accommodating tanks 18 and a slower flow velocity on the side with fewer accommodating tanks 18. According to Bernoulli's principle, the water pressure difference can also provide upward buoyancy to the generator. Example 3

[0052] This application discloses a hydroelectric generator.

[0053] Reference Figure 9 , Figure 10 The difference between this embodiment of the hydroelectric generator and Embodiment 1 is that a partition 27 is fixedly installed inside the second housing 2, and the rotating shaft of the turbine 8 rotates through the partition 27. When the generator is placed in water, due to the setting of the sealing ring 17 and the sealing groove 16, the path for water to flow into the second housing 2 is increased, making it difficult for water to flow into the interior of the second housing 2. When some water seeps into the interior of the second housing 2, the stator and rotor of the turbine 8 are waterproofed, thus not affecting the use of the generator. However, when the sealing ring 17 and the sealing groove 16 wear, causing the gap between the rotating platform 31 and the second boss 6 to increase, the amount of water entering the interior of the second housing 2 increases. At this time, the partition 27 prevents water from directly contacting the turbine 8, thereby increasing the service life of the turbine 8.

[0054] A first shielding pipe 28 is fixedly installed on the side of the partition 27 away from the first housing 1, and a second shielding pipe 29 is fixedly installed on the end of the first shielding pipe 28 away from the partition 27. Both the first shielding pipe 28 and the second shielding pipe 29 are sleeved on the rotating shaft of the turbine 8, with the inner wall of the first shielding pipe 28 abutting against the rotating shaft of the turbine 8. The inner diameter of the second shielding pipe 29 gradually increases from one end near the first shielding pipe 28 to the other end and is inclined. The first shielding pipe 28 and the second shielding pipe 29 prevent water from flowing in from the gap between the rotating shaft of the turbine 8 and the partition 27, thereby reducing the occurrence of water contact with the turbine 8.

[0055] The inner wall of the second housing 2 is provided with a connecting hole 30, which is used to connect the receiving groove 18 and the interior of the second housing 2. The connecting hole 30 is located on the side of the partition 27 away from the first housing 1.

[0056] When the generator is used to generate electricity, it is submerged in water, and the support assembly 20 extends the flexible sheet 19 into an arc shape. If water flows into the second housing 2, it enters the receiving tank 18 through the connecting hole 30. As the amount of water flowing into the receiving tank 18 increases, the weight of the second housing 2 gradually increases, causing the generator to tilt in the water. When the generator tilts to a certain angle, the water inside the receiving chamber returns to the second housing 2 through the connecting hole 30.

[0057] As water returns to the second housing 2 through the connecting hole 30, the weight of the second housing 2 on the side away from the first housing 1 increases, causing the generator to tilt further. This, in turn, accelerates the flow of water from the connecting hole 30 into the second housing 2. As the water enters the second housing 2 more rapidly, it seals the gap between the second housing 2 and the rotating shaft of the turbine 8, thus acting as a liquid seal.

[0058] During generator manufacturing, a support plate 202 is used to expand the curvature of the flexible plate 19, thereby achieving the generator tilt angle required for liquid sealing. Alternatively, the support plate 202 is pre-bent for guidance, and the bending position of the flexible plate 19 is adjusted, which also achieves the generator tilt angle required for liquid sealing.

[0059] The implementation principle of a hydroelectric generator according to an embodiment of this application is as follows: when the sealing ring 17 and sealing groove 16 are worn and leakage occurs, the water is separated from the turbine 8 by the partition 27, thereby improving the service life of the turbine 8.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hydroelectric generator, comprising a first housing (1) and a second housing (2), wherein one side of the first housing (1) is detachably connected to one side of the second housing (2), a hanging rope (12) is installed on the side of the first housing (1) away from the second housing (2), a battery (3) and a circuit board (4) are fixedly installed inside the first housing (1), a charging interface (13) is installed on the side of the first housing (1) near the second housing (2), a turbine (8) is fixedly installed inside the second housing (2), the charging interface (13), the turbine (8) and the battery (3) are all electrically connected to the circuit board (4), the rotating shaft of the turbine (8) passes through the side of the second housing (2) away from the first housing (1), a rotating platform (31) is fixedly installed on the rotating shaft of the turbine (8), and a plurality of blades (11) are installed on the rotating platform (31), characterized in that: The second housing (2) has a plurality of receiving grooves (18) on its periphery. A flexible sheet (19) is fixedly installed in the groove of the receiving groove (18). The second housing (2) is equipped with a support assembly (20), which is used to expand the flexible sheet (19).

2. A hydroelectric generator according to claim 1, characterized in that: It also includes a lampshade (15), a first boss (5) is fixedly installed on the side of the first housing (1) near the blade (11), a sleeve (7) is fixedly installed on the side of the second housing (2) near the first housing (1), the sleeve (7) is threaded onto the first boss (5), the lampshade (15) has an opening on one side, the lampshade (15) is damped by the opening and fitted onto the first boss (5), a bulb (14) is fixedly installed on the side of the first housing (1) near the second housing (2), the bulb (14) is electrically connected to the circuit board (4).

3. A hydroelectric generator according to claim 1, characterized in that: The support assembly (20) includes a drive ring (201) and multiple support plates (202). A second boss (6) is fixedly installed on the side of the second housing (2) near the blade (11). The rotating platform (31) abuts against the side of the second boss (6) away from the second housing (2). The drive ring (201) is threaded onto the second boss (6). Multiple telescopic openings (21) are provided on the side of the second housing (2) away from the first housing (1). The multiple telescopic openings (21) are arranged around the second boss (6). The telescopic openings (21) are connected to the receiving groove (18). One side of the support plate (202) is fixedly connected to the inner wall of the receiving groove (18) near the first housing (1). The other side of the support plate (202) passes through the telescopic opening (21).

4. A hydroelectric generator according to claim 3, characterized in that: The receiving groove (18) is provided with multiple elastic ropes (22), both ends of which are fixedly connected to the flexible sheet (19). The elastic ropes (22) and the flexible sheet (19) surround the support sheet (202).

5. A hydroelectric generator according to claim 3, characterized in that: The second boss (6) has multiple coaxially arranged sealing grooves (16) with different diameters on the side away from the second housing (2). The rotating table (31) has multiple coaxially arranged sealing rings (17) with different diameters fixedly installed on the side close to the second housing (2). The sealing rings (17) pass through the sealing grooves (16).

6. A hydroelectric generator according to claim 1, characterized in that: The support component (20) drives the flexible sheet (19) to expand in an arc shape, and the number of receiving grooves (18) gradually decreases from one side of the second housing (2) to the other side.

7. A hydroelectric generator according to claim 1, characterized in that: The rotary table (31) is threaded with a limiting ring (23), and the rotary table (31) has an installation groove (24). One end of the blade (11) is hinged inside the installation groove (24). The limiting ring (23) has a clearance groove (25) for avoiding the blade (11), and the inner side wall of the clearance groove (25) has a limiting groove (26) for the blade (11) to enter.

8. A hydroelectric generator according to claim 1, characterized in that: A partition (27) is fixedly installed inside the second housing (2), and the rotating shaft of the turbine (8) rotates through the partition (27).

9. A hydroelectric generator according to claim 8, characterized in that: The inner wall of the second housing (2) is provided with a connecting hole (30), which is used to connect the receiving groove (18) and the interior of the second housing (2). The connecting hole (30) is located on the side of the partition (27) away from the first housing (1).

10. A hydroelectric generator according to claim 8, characterized in that: A first shielding tube (28) is fixedly installed on the side of the partition (27) away from the first housing (1). A second shielding tube (29) is fixedly installed on the end of the first shielding tube (28) away from the partition (27). The first shielding tube (28) and the second shielding tube (29) are both sleeved on the rotating shaft of the turbine (8). The inner wall of the first shielding tube (28) abuts against the rotating shaft of the turbine (8). The inner diameter of the second shielding tube (29) gradually increases from one end near the first shielding tube (28) to the other end and is inclined.

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