Hydro-generator axial sealing device and hydro-generator

Abstract

The invention discloses a hydro-generator axial sealing device and hydro-generator equipment. The axial sealing device of the hydro-generator comprises a main shaft, a supporting frame, an adjusting assembly and a sealing assembly, and the supporting frame is coaxially connected with the main shaft; the sealing assembly is arranged between the first end of the supporting frame and the main shaft, an outer shell of the sealing assembly is connected with the supporting frame, the sealing ring is arranged between the outer shell and the main shaft, the stress ring is arranged on one axial side of the sealing ring, the centrifugal component is connected with the outer shell, and the centrifugal component abuts against the stress ring. The centrifugal component applies acting force to the sealing ring through the stress ring under the action of centrifugal force, so that the sealing ring is pressed to deform and is attached to the main shaft. The fitting degree of the sealing ring and the main shaft can be improved, the centrifugal component can improve the extrusion acting force on the sealing ring along with the increase of the rotating speed, and therefore the sealing strength is automatically adjusted, and the stability is good.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of hydraulic power generation, and particularly relates to an axial sealing device of a hydraulic generator and a hydraulic power generation equipment. BACKGROUND

[0002] The thrust bearing of a large hydraulic generator is an important component of a hydraulic generator set, mainly used for supporting the radial and axial load of a water turbine main shaft, ensuring that the main shaft maintains a stable center position during rotation, reducing vibration and wear, and in design and maintenance, a suitable sealing form needs to be selected according to the water head of a power station, water quality conditions and unit parameters, and the wear condition of the sealing element is checked regularly to ensure the reliability of the sealing performance.

[0003] In the related art, part of the axial sealing devices of the thrust bearing of the large hydraulic generator easily leak during use, and a large amount of lubricating medium needs to be constantly supplied to achieve the sealing effect, which is difficult to adjust and consumes a large amount of electric energy, reduces the output electric energy of the hydraulic generator, and reduces the power generation efficiency of the unit. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, an embodiment of the present application proposes a hydraulic generator axial sealing device with good sealing performance and high stability.

[0006] An embodiment of the present application also proposes a hydraulic power generation equipment.

[0007] The hydraulic generator axial sealing device of the present application comprises: a main shaft; a support frame coaxially connected with the main shaft, the support frame having a first end and a second end in the axial direction thereof, the circumferential side wall of the support frame having a plurality of flow gaps, the flow gaps being provided with vanes, and the second end of the support frame being open; an adjusting assembly arranged between the support frame and the vanes to adjust the swing of the vanes; a sealing assembly arranged between the first end of the support frame and the main shaft, the sealing assembly comprising an outer housing, a sealing ring, a force receiving ring and a centrifugal component, the outer housing being connected with the support frame, the sealing ring being arranged between the outer housing and the main shaft, the force receiving ring being arranged on one side of the sealing ring in the axial direction, the centrifugal component being connected with the outer housing and abutting against the force receiving ring, and the centrifugal component applying a force to the sealing ring through the force receiving ring under the action of centrifugal force to make the sealing ring be pressed and deformed and abut against the main shaft.

[0008] In the axial sealing device of the water turbine generator, the centrifugal component can drive the force ring to extrude the sealing ring in the rotating process by using the centrifugal force, so that the sealing ring is deformed and the fit of the sealing ring and the main shaft is improved. In this process, the centrifugal component can increase the extrusion force on the sealing ring as the rotating speed increases, thereby automatically adjusting the sealing strength and achieving good stability.

[0009] In some embodiments, the support frame comprises support rings connected to each other and middle support frames, two of the support rings are arranged at intervals in the axial direction of the main shaft, a plurality of the middle support frames are arranged at intervals along the circumferential direction of the support rings between the two support rings, and the over-flow gap is formed between two adjacent middle support frames, and the vane shaft of the vane is rotationally connected to the two support rings.

[0010] In some embodiments, the adjusting assembly comprises a driver, a rotating ring, and a connecting rod component, one end of the driver is connected to the support ring, the other end of the driver is connected to the rotating ring, the connecting rod component is arranged between the rotating ring and the vane shaft of each vane, and the driver is used to drive the rotating ring to rotate and drive the vane to swing through the connecting rod component.

[0011] In some embodiments, the outer shell has a fixed plate located on the inner side of the force ring, the centrifugal component comprises a sliding shaft, an elastic member, and a force plate, the sliding shaft is slidingly arranged on the fixed plate, the force plate is arranged on one end of the sliding shaft adjacent to the main shaft, the other end of the sliding shaft away from the force plate abuts against the force ring, and the elastic member is arranged between the force plate and the fixed plate, the force ring is deformable, the sliding shaft abuts against the inner wall of the force ring to deform the force ring and apply an axial force to the sealing ring when the force plate is subjected to the centrifugal force; or, the side of the force ring away from the sealing ring has a slope, the sliding shaft abuts against the slope of the force ring to move the force ring towards the sealing ring and apply an axial force to the sealing ring when the force plate is subjected to the centrifugal force.

[0012] In some embodiments, the second end of the main shaft adjacent to the support frame has an impeller, the impeller comprises a plurality of rotating blades, and the plurality of rotating blades are arranged at intervals along the circumferential direction of the main shaft. and / or, further comprising an oil storage tank, the oil storage tank is connected to the outer shell, the oil storage tank is coaxially sleeved on the main shaft, the oil storage tank is located on the side of the sealing ring away from the force ring, and the oil storage tank is used to store lubricating oil.

[0013] A water turbine generator device comprises a power generation assembly and the axial sealing device of the water turbine generator, the power generation assembly comprises: a power generation housing; a stator and a rotor, the stator is arranged in the power generation housing, the rotor is arranged in the main shaft, the stator and the rotor are oppositely arranged; an excitation component, the excitation component is arranged in the power generation housing, the excitation component is used for providing a magnetic field.

[0014] In some embodiments, the water wheel power generation device further comprises a filtering assembly, the filtering assembly comprises a beating rod, a blocking frame and a bottom plate, a plurality of the beating rods are arranged at intervals on the main shaft, the blocking frame is connected to the second end of the support frame, a plurality of beating columns are arranged on the inner wall of the blocking frame, the bottom plate is connected to the bottom of the blocking frame, a through hole is arranged on the blocking frame and the bottom plate, and the main shaft drives the beating rod to rotate to beat the beating columns.

[0015] In some embodiments, the water wheel power generation device further comprises a crushing assembly, the crushing assembly comprises a mounting frame, a fixed frame and a crushing knife, two mounting frames are arranged at intervals along the axial direction of the main shaft, the mounting frames are connected to the main shaft, a plurality of fixed frames are arranged at intervals along the circumferential direction of the main shaft on the mounting frames, a plurality of crushing knives are arranged in each fixed frame, and a plurality of crushing knives are arranged at intervals along the axial direction of the main shaft in the same fixed frame.

[0016] In some embodiments, the support frame is located between the two mounting frames, and the fixed frame and the crushing knife are located on the circumferential outer side of the support frame.

[0017] In some embodiments, the fixed frame has a guide rod, a sliding groove is formed between the guide rod and the side wall of the fixed frame, a sliding block is arranged in the sliding groove, a support block is connected to the outer end of the sliding block, the crushing knife is connected to the support block, the support block and the sliding block are movable along the axial direction of the guide rod, a connecting piece is arranged between the support block and the guide rod, and the connecting piece is used for fixing the support block and the guide rod after adjusting the position of the crushing knife in the axial direction of the guide rod. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the water wheel power generation device of the embodiment of the present application; Figure 2 It is a schematic view of the power generation assembly of the embodiment of the present application; Figure 3 It is a partial sectional view of the water wheel power generation device of the embodiment of the present application; Figure 4 It is a schematic view of the sealing assembly of the embodiment of the present application; Figure 5 It is a sectional view of the sealing assembly of the embodiment of the present application; Figure 6 For Figure 5 Enlarged view at B; Figure 7 For the schematic diagram of the centrifugal component of the embodiment of the application; Figure 8 For the schematic diagram of the crushing assembly of the embodiment of the application; Figure 9 For the connection schematic diagram of the crushing knife and the fixed frame of the embodiment of the application; Figure 10 For Figure 9 Enlarged view at A.

[0019] Reference signs: 1, support ring; 2, middle support frame; 3, adjusting assembly; 31, top plate; 32, air cylinder; 33, strip plate; 34, rotating ring; 35, transmission plate; 36, rotating plate; 37, fan blade shaft; 38, fan blade; 4, filtering assembly; 41, rotating blade; 42, beating rod; 43, blocking frame; 44, beating column; 45, bottom plate; 5, power generation assembly; 51, power generation shell; 52, rotor; 53, protective shell; 54, stator; 55, excitation component; 6, crushing assembly; 61, mounting frame; 62, fixed frame; 63, guide rod; 64, threaded hole; 65, sliding block; 66, support block; 67, bolt; 68, crushing knife; 7, sealing assembly; 71, outer shell; 72, bottom shell; 73, sealing ring; 74, stress ring; 75, fixed plate; 76, sliding shaft; 77, elastic member; 78, stress plate; 8, oil storage tank; 9, main shaft. DETAILED DESCRIPTION

[0020] The embodiments of the application will be described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0021] Referring to Figures 1 to 10 , the water turbine generator axial sealing device of the embodiment of the application comprises a main shaft 9, a support frame, an adjusting assembly 3 and a sealing assembly 7.

[0022] The support frame is coaxially connected with the main shaft 9, the support frame has a first end and a second end in the axial direction thereof, the circumferential side wall of the support frame has a plurality of flow gaps, the fan blades 38 are arranged in the flow gaps, and the second end of the support frame is open.

[0023] The adjusting assembly 3 is arranged between the support frame and the fan blade 38 to adjust the swing of the fan blade 38.

[0024] The sealing assembly 7 is arranged between the first end of the support frame and the main shaft, and comprises an outer housing 71, a sealing ring 73, a force ring 74 and a centrifugal component, the outer housing 71 is connected with the support frame, the sealing ring 73 is arranged between the outer housing 71 and the main shaft 9, the force ring 74 is arranged on the axial side of the sealing ring, the centrifugal component is connected with the outer housing 71, the centrifugal component abuts against the force ring, and the centrifugal component applies a force to the sealing ring through the force ring under the action of centrifugal force, so that the sealing ring is deformed under pressure and is attached to the main shaft.

[0025] In the axial sealing device of the hydroelectric generator, the centrifugal component can drive the force ring to extrude the sealing ring in the rotating process by using the centrifugal force, so that the sealing ring is deformed and the attachment of the sealing ring to the main shaft is improved, in this process, the centrifugal component can increase the extrusion force on the sealing ring with the increase of the rotating speed, so as to realize the automatic adjustment of the sealing strength and good stability.

[0026] In some embodiments, the support frame comprises support rings 1 and middle support frames 2 connected with each other, the two support rings 1 are arranged at intervals in the axial direction of the main shaft 9, and the plurality of middle support frames 2 are arranged at intervals between the two support rings 1 along the circumferential direction of the support ring 1, the adjacent two middle support frames 2 are configured as flow gaps, and the fan blade shaft 37 of the fan blade 38 is rotationally connected with the two support rings 1.

[0027] The adjusting assembly comprises a driver, a rotating ring 34 and a connecting rod component, one end of the driver is connected with the support ring 1, the other end of the driver is connected with the rotating ring 34, the connecting rod component is arranged between the rotating ring and the fan blade shaft of each fan blade, and the driver is used to drive the rotating ring to rotate and drive the fan blade to swing through the connecting rod component.

[0028] Two support rings 1 are arranged at intervals along the vertical direction, serving as the basic load-bearing structure of the device. Multiple intermediate support frames 2 are fixedly connected to the outside of the two support rings 1. These intermediate support frames 2 are firmly attached to the outer surface of the support rings 1 through welding, providing auxiliary support. An adjustment assembly 3 is fixedly connected to the top side of one of the support rings 1 (the upper support ring 1). Two top plates 31 are fixedly connected to the top side of one of the support rings 1 from their bottom sides. The top plates 31 are made of steel plate and are tightly fixed to the support rings 1 with bolts, thus providing a stable installation foundation. In this embodiment, the actuator is a cylinder. A cylinder 32 is rotatably connected to the top of the top plate 31, providing the drive source. By rotatably connecting the cylinder 32 to the top plate 31, the extension and retraction direction can be flexibly adjusted, providing power to the entire adjustment assembly 3. A rotating ring 34 is fixedly connected to the bottom side of the two strip plates 33. The rotating ring 34 is a ring-shaped metal structure and is welded and fixed to the strip plates 33. The driving end of the cylinder 32 is rotatably connected to the strip plates 33, and the rotating ring 34 can rotate under the drive of the strip plates 33.

[0029] The linkage component in this embodiment includes a transmission plate 35 and a rotating plate 36. Multiple transmission plates 35 are rotatably connected inside the rotating ring 34, and are evenly distributed within the ring. These transmission plates 35 are connected to the ring via bearings, allowing the rotation of the ring 34 to drive the transmission plates 35 to rotate. A rotating plate 36 is rotatably connected to the end of each transmission plate 35 furthest from the rotating ring 34. The rotating plate 36 is connected to the transmission plate 35 via a shaft and bearings, allowing it to rotate under the drive of the transmission plate 35 to adapt to different working requirements. A fan blade shaft 37 is fixedly connected to the end of each rotating plate 36 furthest from the transmission plate 35. The rotation of the rotating plate 36 drives the fan blade shaft 37 to rotate synchronously. The multiple fan blade shafts 37 are rotatably connected between two support rings 1, ensuring stable rotation of the fan blade shafts 37 through the restraint of the support rings 1. A fan blade 38 is fixedly connected to the middle of the fan blade shaft 37. The fan blade 38 adopts a streamlined design and is made of lightweight and sturdy material. Driven by the fan blade shaft 37, it can achieve high oscillation, allowing water to flow through the fan blade.

[0030] See Figures 4 to 7 In some embodiments, the outer casing 71 has a fixed plate 75 located inside the force-bearing ring 74. The centrifugal component includes a sliding shaft 76, an elastic element 77, and a force-bearing plate 78. The sliding shaft is slidably mounted on the fixed plate. The force-bearing plate 78 is located at one end of the sliding shaft adjacent to the main shaft. The end of the sliding shaft 76 away from the force-bearing plate abuts against the force-bearing ring. The elastic element is located between the force-bearing plate and the fixed plate. The force-bearing ring is deformable, and the sliding shaft abuts against the inner wall of the force-bearing ring to push the force-bearing ring to deform under the centrifugal force acting on the force-bearing plate and apply an axial force to the sealing ring. Alternatively, the side of the force-bearing ring away from the sealing ring has an inclined surface, and the sliding shaft abuts against the inclined surface of the force-bearing ring to push the force-bearing ring towards the sealing ring under the centrifugal force acting on the force-bearing plate and apply an axial force to the sealing ring. Preferably, the force-bearing ring is made of rubber and is elastic, so that it can deform after being pushed by the sliding shaft and use its own deformation to drive the deformation of the sealing ring.

[0031] The outer casing 71 is also provided with an oil storage tank 8, which is connected to the outer casing 71. The oil storage tank is coaxially sleeved on the main shaft and is located on the side of the sealing ring away from the force ring. The oil storage tank is used to store lubricating oil.

[0032] The outer casing 71 is externally connected to the interior of one of the support rings 1 (the upper support ring 1). An oil reservoir 8 is fixedly connected inside the outer casing 71. The oil reservoir 8 stores lubricating oil and can be fitted onto the main shaft 9 to facilitate its rotation. The interior of the outer casing 71 is rotatably connected to the outside of the main shaft 9, allowing the main shaft 9 to rotate stably. A bottom shell 72 can be connected to the lower end of the outer casing 71. The bottom shell 72 matches the shape of the outer casing 71, further enhancing the sealing effect. There is a gap between the bottom shell 72 and the main shaft, and a seal can also be installed between the bottom shell 72 and the main shaft to prevent fluid leakage. A sealing ring 73, made of rubber, is provided inside the outer casing 71. It fits tightly against the outside of the main shaft 9, effectively preventing fluid leakage from the gap between the main shaft 9 and the outer casing 71. A force-bearing ring 74, also made of rubber, is connected to the lower side of the sealing ring 73 to withstand the pressure on the sealing ring 73. Multiple fixing plates 75 are fixedly connected inside the outer casing 71. These fixing plates are spaced circumferentially along the main shaft. The fixing plates can be fixedly connected to the lower end of the outer casing 71. The outer casing 71 and the multiple fixing plates 75 are fixedly welded together, providing support for the fixing plates 75. There is a gap between the fixing plates and the main shaft, and a receiving groove for a force-bearing ring 74 is formed between the fixing plates 75 and the inner wall of the outer casing. Alternatively, the fixing plates 75 can be fixedly connected to the bottom casing 72. A sliding shaft 76 is slidably connected to the fixing plates 75, guiding the sliding of the sliding shaft 76. An elastic element 77, which can be a spring, is sleeved on the outside of the sliding shaft 76. By restricting the elastic element 77, the force can be evenly distributed. A force-bearing plate 78 is fixedly connected to one end of each sliding shaft 76 adjacent to the main shaft. The force-bearing plate 78, under the action of centrifugal force, drives the sliding shafts to slide synchronously and abut against the force-bearing ring 74. One end of the elastic element 77 abuts against the fixing plate. The other end of the elastic element 77 abuts against the force plate 78. When the force plate 78 slides, it squeezes the elastic element 77, allowing the elastic element 77 to store elastic potential energy, which in turn provides a force in the opposite direction to the force plate 78 for resetting.

[0033] During operation, the outer casing 71 rotates, simultaneously driving the centrifugal component to rotate. Centrifugal force causes the force plate 78 to slide along the sliding shaft 76, compressing the elastic element 77. As the sliding shaft 76 slides, it compresses the force ring 74, transferring force to the sealing ring 73. This causes the sealing ring 73 to deform and fit more tightly against the main shaft 9. The rotational speed of the outer casing is directly proportional to the force applied to the sealing ring 73, thus automatically adjusting the deformation of the sealing ring 73 to ensure sealing performance. The elastic element provides a restoring force to the force plate 78. Therefore, when the centrifugal force decreases, the fit between the sealing ring and the main shaft is reduced, decreasing wear. This embodiment balances sealing performance and the service life of the sealing ring, improving overall stability.

[0034] In some embodiments, the second end of the main shaft adjacent to the support frame has an impeller, which includes a plurality of rotating blades arranged circumferentially spaced along the main shaft. The rotating blades can drive the main shaft to rotate under the influence of water flow.

[0035] A hydroelectric power generation device includes a power generation component and a hydroelectric generator axial sealing device. The power generation component includes a power generation housing, a stator, a rotor, and an excitation component. The stator is disposed on the power generation housing, and the rotor is disposed on the main shaft. The stator and rotor are arranged opposite to each other. The excitation component is disposed on the power generation housing and is used to provide a magnetic field.

[0036] See Figure 2The generator assembly 5 is located at the top of the main shaft 9. The generator assembly 5 includes a generator housing 51, with the top of the main shaft 9 rotatably connected to the inside of the generator housing 51, which is a closed structure. A rotor 52 is fixedly connected to the top of the main shaft 9. The rotor 52, as the core component of the generator assembly 5, is made of stacked silicon steel sheets with high magnetic permeability. Driven by the main shaft 9, it rotates at high speed, generating electromagnetic induction. A protective shell 53 is fixedly connected to the top side of the generator housing 51. The protective shell 53 has a cylindrical structure, and the excitation component 55 is located inside the protective shell 53. A stator 54, consisting of windings and an iron core, is fixedly connected inside the generator housing 51 and works in conjunction with the rotor 52 to achieve electrical energy conversion. The excitation component 55 generates a stable magnetic field, providing the necessary excitation current for the generator's power generation process.

[0037] See Figure 3 In some embodiments, the hydroelectric power generation equipment further includes a filter assembly 4, which includes a striking rod 42, a barrier frame 43, and a base plate 45. Multiple striking rods are spaced apart on the main shaft 9. The barrier frame 43 is connected to the second end of the support frame. Multiple striking posts 44 are provided on the inner wall of the barrier frame. The base plate is connected to the bottom of the barrier frame. Both the barrier frame and the base plate are provided with through holes. The main shaft drives the striking rods to rotate to strike the striking posts 44.

[0038] The filter assembly 4 is located at the bottom end of the main shaft 9. Multiple striking rods 42 are fixedly connected to the bottom end of the main shaft 9. Rotation of the main shaft 9 drives the multiple striking rods 42 to rotate. A barrier frame 43 is fixedly connected to the bottom side of another support ring 1 (the lower support ring 1). The barrier frame 43 has a frame structure and through holes. Multiple striking posts 44 are fixedly connected to the inner wall of the barrier frame 43. The striking posts 44 can effectively intercept impurities in the water. A base plate 45 is fixedly connected to the bottom end of the inner wall of the barrier frame 43. The base plate 45 is made of rubber, is soft, and has good elasticity, which can buffer the impact force generated when the striking rods 42 strike the striking posts 44. The outer surfaces of the multiple striking rods 42 can contact the outer surfaces of the multiple base plates 45. Rotation of the main shaft 9 drives the striking rods 42 to strike the base plates 45 and the striking posts 44, causing impurities on the base plates 45 and the barrier frame 43 to fall off.

[0039] See Figures 8 to 10 In some embodiments, the hydroelectric power generation equipment also includes a crushing assembly, which includes a mounting frame 61, a fixing frame 62, and crushing blades 68. Two mounting frames are spaced apart along the axial direction of the main shaft. The mounting frame 61 is connected to the main shaft 9. Multiple fixing frames are spaced apart on the mounting frame along the circumferential direction of the main shaft. Multiple crushing blades 68 are provided in each fixing frame 62. The multiple crushing blades are spaced apart in the same fixing frame along the axial direction of the main shaft 9.

[0040] Specifically, the support frame is located between the two mounting brackets 61, and the fixing frame and the crushing blade are located on the circumferential outer side of the support frame.

[0041] The fixed frame has a guide rod 63, and there is a sliding groove between the guide rod and the side wall of the fixed frame. A sliding block 65 is provided in the sliding groove. A support block 66 is connected to the outer end of the sliding block 65. The crushing blade 68 is connected to the support block 66. The support block and the sliding block are movable along the axial direction of the guide rod. A connector is provided between the support block and the guide rod. The connector is a bolt 67. At this time, a threaded hole 64 can be provided on the guide rod. The connector is used to fix the support block 66 and the guide rod 63 after adjusting the axial position of the crushing blade on the guide rod.

[0042] In this embodiment, two mounting brackets 61 are connected to the main shaft 9. Both mounting brackets 61 are cross-shaped, and four fixing frames 62 are fixedly connected to the ends of the mounting brackets 61 away from the main shaft 9. Each fixing frame 62 has a square cavity inside and a guide rod is provided inside. A guide rod 63 is fixedly connected inside the fixing frame 62. The guide rod 63 is supported by welding the fixing frame 62 and the guide rod 63. The guide rod 63 has multiple threaded holes 64. A sliding groove is formed between the guide rod 63 and the side wall of the fixing frame 62. Multiple sliding blocks 65 are slidably connected in the sliding groove. The sliding blocks 65 can slide stably due to the constraint of the guide rod 63.

[0043] Multiple sliding blocks 65 are externally fixedly connected to support blocks 66. The sliding blocks 65 and support blocks 66 are secured by welding to ensure a strong connection. Bolts 67 are threaded onto the support blocks 66 and are connected to the threaded holes 64 on the guide rod to fix the support blocks 66 in place. After unscrewing the bolts 67 from the threaded holes 64, the positions of the sliding blocks 65, support blocks 66, and shredder 68 on the guide rod 63 can be adjusted, thereby changing the working range of the shredder 68. Each support block 66 is fixedly connected to a shredder 68, which uses high-hardness alloy blades with a sharp shape to shred weeds, preventing clogging or entanglement.

[0044] During operation, the water flow over the rotating blades 41 drives the main shaft 9 to rotate, and all components work together. Impurities in the water are intercepted by the barrier frame 43, and the impact rod 42 rotates synchronously to strike the impact column 44 and the base plate 45. The base plate 45 can also buffer the impact force, thereby preventing impurities from accumulating and ensuring continuous and efficient filtration.

[0045] By starting the cylinder 32 to extend or retract, the rotating ring 34 is driven to rotate, which in turn drives the rotating plate 36 to rotate via the transmission plate 35. This, in turn, drives the fan blade shaft 37 to rotate, which in turn drives the fan blade 38 to rotate, thereby controlling the water flow.

[0046] The rotor 52 rotates at high speed with the main shaft 9, interacting with the stator 54 to generate electromagnetic induction. The excitation component 55 provides a stable magnetic field, completing the electrical energy conversion. The crushing assembly 6 inside the main shaft 9 can adjust the position of the sliding block 65 and the support block 66 by adjusting the bolt 67, thereby adjusting the working range of the crushing blade 68. At the same time, the main shaft 9 also drives the two mounting brackets 61 to rotate, which in turn drives the four fixed frames 62 to rotate, thereby driving the crushing blade 68 to rotate, enabling it to crush external weeds and avoid entanglement or blockage. As needed, by rotating the bolt 67, the bolt 67 is disengaged from the guide rod 63. Then, by pushing the support block 66, the crushing blade 68 is slidably adjusted. After adjusting to the desired position, the bolt 67 is rotated into the support block 66 and into the guide rod 63, thus completing the adjustment.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An axial sealing device for a hydro-generator, characterized in that, include: spindle; A support frame is coaxially connected to the main shaft. The support frame has a first end and a second end in its axial direction. The circumferential sidewall of the support frame has multiple flow gaps. Fan blades are provided in the flow gaps. The second end of the support frame is open. An adjustment component is disposed between the support frame and the fan blade to adjust the oscillation of the fan blade; A sealing assembly is disposed between the first end of the support frame and the main shaft. The sealing assembly includes a housing, a sealing ring, a force-bearing ring, and a centrifugal component. The housing is connected to the support frame. The sealing ring is disposed between the housing and the main shaft. The force-bearing ring is disposed on one side of the axial direction of the sealing ring. The centrifugal component is connected to the housing and abuts against the force-bearing ring. Under the action of centrifugal force, the centrifugal component applies a force to the sealing ring through the force-bearing ring, so that the sealing ring is compressed and deformed and fits against the main shaft.

2. The axial sealing device for a hydro-generator according to claim 1, characterized in that, The support frame includes connected support rings and intermediate supports. Two support rings are spaced apart axially on the main shaft. Multiple intermediate supports are spaced apart circumferentially between the two support rings. The flow gap is formed between two adjacent intermediate supports. The fan blade shaft is rotatably connected to the two support rings.

3. The axial sealing device for a hydro-generator according to claim 2, characterized in that, The adjustment assembly includes a driver, a rotating ring, and a connecting rod component. One end of the driver is connected to the support ring, and the other end of the driver is connected to the rotating ring. A connecting rod component is provided between the rotating ring and the blade shaft of each fan blade. The driver is used to drive the rotating ring to rotate, and the connecting rod component drives the fan blade to swing.

4. The axial sealing device for a hydro-generator according to claim 1, characterized in that, The outer casing has a fixed plate located inside the force-bearing ring. The centrifugal component includes a sliding shaft, an elastic element, and a force-bearing plate. The sliding shaft is slidably mounted on the fixed plate. The force-bearing plate is located at one end of the sliding shaft adjacent to the main shaft. The end of the sliding shaft away from the force-bearing plate abuts against the force-bearing ring. The elastic element is located between the force-bearing plate and the fixed plate. The force-bearing ring is deformable, and the sliding shaft abuts against the inner wall of the force-bearing ring to push the force-bearing ring to deform under the action of centrifugal force on the force-bearing plate and apply an axial force to the sealing ring; Alternatively, the side of the force-bearing ring opposite to the sealing ring has an inclined surface, and the sliding shaft abuts against the inclined surface of the force-bearing ring to push the force-bearing ring toward the sealing ring under the action of centrifugal force and apply an axial force to the sealing ring.

5. The axial sealing device for a hydro-generator according to claim 1, characterized in that, The second end of the main shaft adjacent to the support frame has an impeller, the impeller including a plurality of rotating blades, the plurality of rotating blades being arranged circumferentially spaced along the main shaft; And / or, it also includes an oil storage tank, which is connected to the outer casing, is coaxially sleeved on the main shaft, and is located on the side of the sealing ring away from the force-bearing ring. The oil storage tank is used to store lubricating oil.

6. A hydroelectric power generation device, characterized in that, The generator assembly includes a power generation component and an axial sealing device for a hydro-generator as described in any one of claims 1 to 5, wherein the power generation component comprises: Power generation casing; The stator and the rotor are arranged opposite to each other. An excitation component is disposed in the generator housing and is used to provide a magnetic field.

7. The hydroelectric power generation equipment according to claim 6, characterized in that, It also includes a filter assembly, which includes a striking rod, a barrier frame, and a base plate. Multiple striking rods are spaced apart on the main shaft. The barrier frame is connected to the second end of the support frame. Multiple striking posts are provided on the inner wall of the barrier frame. The base plate is connected to the bottom of the barrier frame. Both the barrier frame and the base plate are provided with through holes. The main shaft drives the striking rods to rotate to strike the striking posts.

8. The hydroelectric power generation equipment according to claim 6, characterized in that, It also includes a crushing assembly, which includes a mounting frame, a fixing frame, and crushing blades. Two mounting frames are spaced apart along the axial direction of the main shaft and are connected to the main shaft. Multiple fixing frames are spaced apart on the mounting frames along the circumferential direction of the main shaft. Multiple crushing blades are provided in each fixing frame, and the multiple crushing blades are spaced apart in the same fixing frame along the axial direction of the main shaft.

9. The hydroelectric power generation equipment according to claim 8, characterized in that, The support frame is located between the two mounting brackets, and the fixing frame and the crushing blade are located on the circumferential outer side of the support frame.

10. The hydroelectric power generation equipment according to claim 8, characterized in that, The fixed frame has a guide rod, and there is a sliding groove between the guide rod and the side wall of the fixed frame. A sliding block is provided in the sliding groove, and a support block is connected to the outer end of the sliding block. The crushing blade is connected to the support block. The support block and the sliding block are movable along the axial direction of the guide rod. A connector is provided between the support block and the guide rod. The connector is used to fix the support block and the guide rod after adjusting the axial position of the crushing blade on the guide rod.

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