An adaptive helical flow power generation device with a damping vortex wire

Abstract

The present application relates to a kind of self-adapting helical flow power generation device with damping vortex, belong to the technical field of hydroelectric power equipment.The present application includes: fixedly arranged in the base of riverbed or seabed base;It is the column of cylindrical structure, is arranged in the center of base, and right-handed damping vortex is arranged equidistantly on the upstream face of column;Column is connected through bearing platform to guide vane, guide vane is the structure of variable-diameter pipe, flange, contraction section, diffusion section and tail edge are coaxially arranged along the direction of water flow;Threaded fin is arranged on the inner wall of guide vane, generator is also located in guide vane;Guide vane is provided with rudder, and the whole is wing-shaped structure, including front rudder and tail rudder, each tail rudder is made to play a synergistic effect by connecting rod mechanism, and the geometric angle of attack of guide vane is automatically adjusted under the difference of main stream velocity potential, so that it is always opposite to main stream, to improve the power generation efficiency and overall performance of device.The present application is suitable for application in ocean, inland lake, reservoir, park water body, and uses water flow to generate electricity.

Description

TECHNICAL FIELD

[0001] The present application relates to a tidal current or river current power generation device, in particular to a generator device capable of utilizing tidal current or river current to realize power supply, and belongs to the technical field of hydroelectric power generation devices. BACKGROUND

[0002] Compared with wind energy and solar energy, tidal current energy has higher energy density, about 4 times of wind energy and 30 times of solar energy, has rich reserves and great development prospects, and has forms of tidal energy and tidal current energy. The main form is that the gradient difference caused by many factors converts kinetic energy into other forms of energy, which is relatively stable. Although the scale of river current energy is relatively small, it also has the advantages of being renewable and environmentally friendly. River current energy mainly comes from the flow of rivers, inland lakes and reservoirs. Similar to tidal current energy, its energy mainly comes from the kinetic energy and potential energy of water flow. The kinetic energy and potential energy are converted into other forms of energy.

[0003] In recent years, a large number of tidal current power generation devices have appeared, mainly including floating type and fixed type. The floating type mainly adjusts the geometric angle of attack of the device according to the flow state of the wave flow to obtain higher power generation efficiency, but the floating cylinder located on the waterway has a great influence on navigation, and there are factors such as power transmission, operation and maintenance inconvenience. The fixed type mainly connects the base and the power generation device through a column, but the column is mostly an integral structure, without considering the rotation support of the power generation device, and the column flow surface is smooth, without considering the structural fatigue and resonance vibration caused by the periodic shedding of the Karman vortex street. In addition, in order to obtain higher power generation efficiency, a flow guide tail is fixedly arranged at the tail of the generator, which is similar in form to the tail rudder of a wind turbine, and is generally a combination of a long slender rod and a rudder, so as to adjust the flow direction of the generator group according to the included angle between the incoming flow and the generator group. However, the density of water is larger than that of air, and the single long slender rod connected with the rudder is easy to break. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a self-adaptive spiral flow power generation device with damping vortex line, which has simple structure, good reliability and high power generation efficiency.

[0005] In order to achieve the above purpose, the present application discloses a self-adaptive spiral flow power generation device with damping vortex line.

[0006] A self-adaptive spiral flow power generation device with damping vortex line comprises:

[0007] A base is used to fix the power generation device on the riverbed or seabed base;

[0008] A column is fixed on the base, and damping vortex lines are arranged on the column flow surface at equal intervals;

[0009] a support platform, the lower end of which is connected with the column and the upper end of which is connected with the fairing, the support platform being horizontally rotatable relative to the column;

[0010] the fairing, which is a variable-diameter pipe structure, has a flange, a contraction section, a diffusion section and a trailing edge arranged coaxially along the water flow direction;

[0011] the threaded ribs, which are arranged in a ring shape on the inner wall of the fairing, extend through the flange to the end of the diffusion section;

[0012] the generator set, which is located in the diffusion section of the fairing;

[0013] the rudder, which is arranged outside the end of the fairing and cooperates with the support platform to produce a planar rotation of the fairing, automatically adjusts the geometric angle of attack of the fairing and makes the fairing always face the main flow.

[0014] Preferably, the column is a cylindrical structure fixed at the geometric center of the base; the damping vortex lines are right-handed vortex lines arranged uniformly and protruding from the surface of the column, extending from the top end of the column to the bottom end of the column. The damping vortex lines disturb the flow trajectory of the water flowing around the column, so that the water cannot form a vortex with a stable frequency, thereby disrupting the periodicity of the Karman vortex street, increasing energy dissipation, reducing the influence of pulsation and avoiding destructive vortex-induced vibration caused by matching the frequency of the power generation device. At the same time, as a spoiler structure, the damping vortex lines can reduce the propagation of the horse-shoe vortex along the horizontal and vertical directions and the bed shear stress, avoid the scouring of the water flow to the base, and thus obtain a better scouring protection effect, so as to achieve a comprehensive protection effect on the power generation device.

[0015] Preferably, the lower part of the support platform is an inwardly recessed cylindrical groove, which nests a rotary bearing, the rotary bearing is connected with the protruding shaft at the top end of the column, and rotary bearing end plates are arranged at both ends of the rotary bearing; the upper part of the support platform is connected with the diffusion section of the fairing, the connection part is concave and has a local conical shape that expands gradually along the water flow direction, and the intersection line of the concave part is a parabola with an opening along the water flow direction.

[0016] Preferably, the flange is the inlet of the fairing, the inner edge wall surface is contracted toward the axis, and the outer edge wall surface is expanded away from the axis; the contraction section is a horn-shaped structure that contracts along the water flow direction, and the inner and outer walls contract toward the axis with the same function curve; the diffusion section is a cup-shaped structure that expands gradually, and the inner and outer wall surfaces are parallel straight lines; and the trailing edge is a pointed wing-shaped structure with the inner and outer walls being staggered and contracted. The variable-diameter pipe structure composed of the four parts is used to "cut" and "straighten" the water flow into the fairing along the flow direction, so as to reduce the resistance loss.

[0017] Preferably, the inner edge of the flange is contracted in the range of 90°-15.8° along the water flow direction, the outer edge is expanded in the range of 90°-0° along the water flow direction, the length of the flange along the water flow direction is 2 / 25 of the total length of the fairing, the cross-section of the inner wall of the flange is contracted by 23.68%; the contraction section is next to the flange, and the end is the minimum hydraulic radius of the inner cavity of the fairing, the length of the contraction section along the water flow direction is 6 / 25 of the total length of the fairing, and the cross-section of the contraction section is contracted by 35.86%; the diffusion angle of the diffusion section is 5°, the length of the diffusion section along the water flow direction is 12 / 25 of the total length of the fairing, the area expansion ratio is 1:1.4; the inner wall of the trailing edge along the water flow direction is in the range of 3.2°-9.5°, the outer wall along the water flow direction is in the range of 6.1°-19.5°, and the length of the trailing edge along the water flow direction is 1 / 5 of the total length of the fairing.

[0018] Preferably, the threaded rib is a right-handed protrusion arranged in the circumferential direction of the inner wall of the fairing, and the threaded ribs are uniformly distributed and penetrate through the flange to the end of the diffusion section. The water flowing through the fairing is forced to obtain rotational power under the action of the inner threaded rib, to generate a non-uniform inner rotating flow with forced spiral rolling, to increase the turbulence degree of fluid flow, and the essence is the superposition of straight pipe flow and forced vortex, and a spiral flow state is formed. The forced spiral flow is maintained by the spiral blade fixed on the generator.

[0019] Preferably, the generator set comprises a blade, a generator, a generator frame and a positioning bolt, wherein the generator frame is fixed on the diffusion section of the fairing, the positioning bolt is arranged on the generator frame for fixing the generator, and the blade is connected to the rotor of the generator.

[0020] Preferably, the generator has a cable line, and the electric energy generated by the power generation device is connected to the shore storage room or the municipal power supply cable through the cable line.

[0021] Preferably, the rudder is a wing-shaped structure composed of multiple groups of front rudders and tail rudders, the front rudder is arranged at the top of the outer wall of the end of the diffusion section of the fairing, the tail rudder is inserted into the rear end of the front rudder, the tail rudder can swing relative to the front rudder, each group of tail rudders are connected through a connecting rod mechanism, the swinging of the tail rudder and the cooperation of the connecting rod mechanism form a torque for horizontal rotation of the whole power generation equipment, so as to adjust the optimum geometric angle of attack of the fairing, until the power generation device is opposite to the incoming flow direction, and the rotation stops when the speed potential difference between the left and right main flows through the outer wall of the fairing decreases.

[0022] Preferably, the connecting rod mechanism includes a fixed axis, a directional connecting rod, and a fixed connecting rod. Adjacent tail rudders are connected by the directional connecting rod and the fixed connecting rod. The tail rudder is provided with a fixed axis. Both ends of the directional connecting rod and the fixed connecting rod are connected to the fixed axis. The directional connecting rod passes through the belly notch of the fixed connecting rod to form a cross X shape. Multiple adjacent X-shaped structures are connected in sequence to form a connecting rod mechanism. Under the velocity potential difference of water flowing through the left and right sides of the tail rudder, the fixed connecting rod connected to the fixed axis pushes the tail rudder to generate a deflection effect in the same direction within the notch range at both ends of the directional connecting rod, and the connecting rod mechanism superimposes the deflection. Beneficial effects

[0023] The present invention arranges damping vortex lines on the columns as a spoiler structure to avoid the scouring of the base foundation by water flow, thereby obtaining a better scouring protection effect, so as to achieve a comprehensive protection effect for the power generation device; by arranging the deflector into a variable diameter circular tube structure and arranging threaded ribs inside it, the water flow obtains rotational power and increases the turbulence of the water flow; by arranging a rudder to make the power generation equipment as a whole horizontally rotate, the power generation equipment as a whole is forced to rotate in a plane, so as to adjust the geometric attack angle of the deflector, obtain the best energy utilization rate, and thus significantly improve its power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional axonometric view of the present invention.

[0025] Figure 2 It is the front view of the present invention.

[0026] Figure 3 It is a top view of the present invention.

[0027] Figure 4 It is a schematic diagram of the partial structure of the base and columns of the present invention.

[0028] Figure 5 It is a schematic diagram of the support structure of the present invention.

[0029] Figure 6 It is a schematic diagram of the structure of the air guide cover and threaded fins of the present invention.

[0030] Figure 7 Schematic diagram of the power generation system structure of the present invention.

[0031] Figure 8 It is a schematic diagram of the rudder structure of the present invention.

[0032] Figure 9 Schematic diagram of the connecting rod structure of the present invention.

[0033] Legend: 1: Base. 2: Column; 21: Damping vortex; 22: Protruding shaft. 3: Cap; 31: Slewing bearing; 32: Slewing bearing cover. 4: Fairing; 41: Flange; 42: Converging section; 43: Diffuser; 44: Trailing edge. 5: Threaded fin. 6: Generator assembly; 61: Generator blade; 62: Generator; 63: Generator frame; 64: Positioning bolt. 7: Rudder; 71: Front rudder; 711: Latch; 712: Rudder blade bearing cover; 713: Rudder blade bearing; 72: Tail rudder; 721: Fixed shaft; 722: Steering link; 723: Fixed link; 724: Fixing bolt. 8: Cable. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0035] like Figure 1-3 As shown, an adaptive spiral flow power generation device with damping vortex lines includes:

[0036] Base 1, used to fix the power generation device on the riverbed or seabed;

[0037] The column 2 is fixed on the base 1, and the damping vortex lines 21 are equidistantly arranged on the flow-facing surface of the column 2;

[0038] The base 3 is connected to the column 2 at the lower end and the air deflector 4 at the upper end. The base 3 can rotate horizontally relative to the column 2.

[0039] The deflector 4 is a variable diameter circular tube structure, with a flange 41, a contraction section 42, a diffusion section 43 and a trailing edge 44 coaxially arranged along the water flow direction;

[0040] The threaded fin 5 is provided on the inner wall of the air deflector 4 in an upward direction, passing through the flange 41 of the air deflector 4 to the end of the diffuser 43;

[0041] The generator set 6 is located in the diffuser section 43 of the shroud 4;

[0042] The rudder 7 is arranged outside the end of the deflector 4 and cooperates with the support platform 3 to make the deflector 4 rotate in a plane, automatically adjusting the geometric angle of attack of the deflector 4 so that it always faces the mainstream.

[0043] Specifically, such as Figure 4As shown, column 2 is a cylindrical structure fixed to the geometric center of base 1; damping vortex lines 21 are a flow-disrupting protection structure protruding from the surface of column 2 and can be triangular-conical in shape. The damping vortex lines 21 extend from the top to the bottom of the flow-facing surface of column 2 and are uniformly arranged right-handed vortex lines. On the one hand, they change the geometric structure of the cylindrical column's flow-facing surface to disrupt the flow trajectory of the water flowing around the column, preventing the formation of vortices with stable frequencies. This disrupts the periodicity of the Karman vortex street, increases energy dissipation, reduces the impact of pulsation, and avoids destructive vortex-induced vibration caused by matching the generator's own frequency. On the other hand, the damping vortex lines, as flow-disrupting structures, reduce the lateral and longitudinal propagation of horseshoe vortices around the column and the shear stress on the bed surface, preventing water scouring the base foundation, thereby achieving better scour protection, improving the safety and stability of the generator, and further enhancing its durability and service life. A protruding shaft 22 is also provided at the top of column 2 for connection to the base 3.

[0044] like Figure 5 As shown, the lower part of the pedestal 3 is an inward-sunk cylindrical groove, in which a slewing bearing 31 is nested. The slewing bearing 31 is screwed to the convex shaft 22 at the top of the column 2, and slewing bearing sealing plates 32 are provided at both ends of the slewing bearing 31. Among them, the sealing plate fixed to the top of the groove is used to cushion the slewing bearing 31 to reduce the direct effects of vibration and impact on the slewing bearing 31; the bottom sealing plate is used as a sealed sealing plate to isolate the water in the working environment of this device and protect the bearing from water erosion. The upper part of the pedestal 3 is connected to the diffusion section 43 of the fairing 4, and a fixed connection method such as welding can be used. The connection point is concave and has a gradually expanding local cone shape along the direction of water flow. The intersection line of the notches is a parabola with the opening along the direction of water flow.

[0045] like Figure 6As shown, the inlet of the shroud 4 is a flange 41. The inner edge of flange 41 converges toward the axis along the water flow direction, with the angle of the converged wall varying between 90° and 15.8°. The outer edge expands away from the axis, with the angle of the expanded wall varying between 90° and 0° along the water flow direction. The length of flange 41 along the water flow direction is 2 / 25 of the total length of the shroud 4, and the cross-sectional contraction rate of the inner wall of flange 41 is 23.68%. The contracting section 42, immediately following the end of flange 41, is a trumpet-shaped structure that converges along the water flow direction. The inner and outer walls converge toward the axis along the same functional curve, and the end is the point where the hydraulic radius of the shroud cavity is the smallest. The length of contracting section 42 along the water flow direction is 6 / 25 of the total length of the shroud 4, and the cross-sectional contraction rate of contracting section 42 is 35.86%. The diffuser 43 is a cup-shaped structure that gradually expands along the flow direction. Its inner and outer walls are parallel straight lines, with a divergence angle of 5°. The length of the diffuser 43 along the flow direction is 12 / 25 of the total length of the shroud 4, resulting in an area expansion ratio of 1:1.4. A generator frame 63 is fixed to the diffuser 43, with cables 8 extending from the generator 62, which is secured to the generator frame 63 by locating bolts 64. The trailing edge 44 is a pointed airfoil-shaped structure with staggered inner and outer walls to improve the flow characteristics of the fluid exiting the shroud, ensuring rapid outflow. The angle of the inner wall along the flow direction ranges from 3.2° to 9.5°, while the angle of the outer wall along the flow direction ranges from 6.1° to 19.5°. The length of the trailing edge 44 along the flow direction is 1 / 5 of the total length of the shroud 4. The rectangular coordinate parameters x and y of points on the 2D cross-section of the shroud are shown in Table 1.

[0046]

[0047]

[0048]

[0049]

[0050] The threaded fins 5 are right-handed protrusions circumferentially arranged on the inner wall of the shroud 4, protruding toward one side of the shroud's axis. They are shaped like a square cone and are evenly distributed, extending from the shroud's flange 41 to the end of the diffuser 43. The evenly spaced right-handed fins force the water flowing through the shroud 4 to acquire rotational momentum under the action of the internally threaded fins, generating a non-uniform internal vortex flow that increases the turbulence of the fluid flow and reduces the diffusion angle of the water flow. This flow pattern is essentially a helical flow pattern formed by the superposition of straight pipe flow and forced vortices. The forced spiral flow is maintained by spiral blades 61 fixed to the generator 62, which maintain the spiral flow at the blades.

[0051] like Figure 7As shown, the generator set 6 includes blades 61, a generator 62, a generator frame 63, and positioning bolts 64. The generator frame 63 is fixed to the diffuser section 43 of the shroud, and is provided with positioning bolts 64 for fixing the generator 62. The blades 61 are connected to the rotor of the generator 62. A cable 8 is led out from the generator 62, and the electricity generated by the generator is connected to the onshore power storage room or the municipal power supply cable through the cable 8.

[0052] The rudder 7 is a wing-shaped structure, consisting of multiple sets of front rudders 71 and tail rudders 72. The front rudders 71 are arranged on the top of the outer wall of the end of the diffuser section 43 of the fairing, and the tail rudders 72 are inserted into the rear end of the front rudders 71. The tail rudders 72 can swing relative to the front rudders 71. Each set of tail rudders 72 is connected by a connecting rod mechanism. The swing of the tail rudders 72 and the synergistic effect of the connecting rod mechanism generate a torque that causes the entire power generation equipment to rotate horizontally, so as to adjust the optimal geometric angle of attack of the fairing 4.

[0053] Specifically, in this embodiment, Figure 8-9 As shown, there are three sets of forward rudders 71 and aft rudders 72, arranged symmetrically along the axis of the generator, with their top planes at the same horizontal height. The two-dimensional effective planar area ratio is 1:2.625, and the chord length ratio is 1:2.8. The forward rudders 71 are fixed to the top of the outer wall of the end of the shroud diffuser 43, with their trailing edges tangent to the end of the shroud diffuser 43. The forward rudders 71 on the left and right sides are slightly taller than the forward rudder 71 at the axis of the generator. The bottoms of the forward rudders 71 on the left and right sides are wedge-shaped planes that share the same "diffusing" trend as the shroud diffuser 43. The bottom of the forward rudder 71 at the axis is flat, and all other geometric information is identical. The length ratio of the front rudder 71 to the diffuser section 43 of the fairing along the direction of water flow is 1:2.21. The front rudder 71 as a whole is an asymmetric groove wing-shaped structure biased toward one side of the upper part of the device, which is used to reserve the position space required for the swing of the rear rudder 72; cylindrical slots are provided at both ends of the groove, the top of the slot passes through the front rudder 71, and the depth is symmetrical on both sides of the center line of the groove, which is used to fix the rudder plate bearing 713, the pin 711 and connect the tail rudder 72. The tail rudder 72 is connected to the front rudder 71 through the pin 711. The geometric information of each set of tail rudders 72 is completely consistent. The wall surfaces on both sides are wing-shaped structures that shrink symmetrically toward their center lines along the direction of water flow. The main structure of the vertical surface of the tail rudder 72 presents a strictly symmetrical "convex" structure. A cylindrical slot is set at an appropriate position on the convex plane, and the hole diameter is consistent with the outer diameter of the pin 711. Two cylindrical fixed shafts 721 are set on the top plane of the tail rudder 72. The top is provided with a threaded buckle for fixing the connecting rod structure thereon. The fixed shafts 721 are respectively located at 1 / 5 and 2 / 5 of the top plane of the tail rudder 72 along the direction of water flow.

[0054] In order to make the tail rudder 72 rotate in the plane, a set of rudder plate bearings 713 is arranged at the appropriate position of the pin 711, the outer diameter of which is consistent with the outer diameter of the cylindrical slot hole on the front rudder 71, and the inner diameter is consistent with the outer diameter of the pin 711; In order to pad and protect the bearing, two sets of annular rudder plate bearing sealing plates 712 are arranged at each bearing, the inner and outer diameters of which are consistent with the hole diameter of the aforementioned pin 711 and cylindrical slot hole.

[0055] The connecting rod mechanism cooperates with the fixed connecting rod 723 through the fixed shaft 721 located on the tail rudder 72 and the direction connecting rod 722, and each connecting rod is provided with two. The two connecting rods are arranged in an "X" shape in the plane, and the width of the two is the same. The direction connecting rod 722 is a circular rectangular in the plane, and is symmetrically provided with a through slot at both ends of the connecting rod center shaft as an axis to provide the position space required for the translation of the connecting rod. The center distance of the slot is 3 times the outer diameter of the cylindrical fixed shaft 721, and the slot width is consistent with the outer diameter of the cylindrical fixed shaft 721. The direction connecting rod 722 penetrates longitudinally from the reserved slot in the abdomen of the fixed connecting rod 723. The fixed connecting rod 723 is a circular rectangular in the plane, and the thickness is twice that of the direction connecting rod 722. The fixed connecting rod 723 is fixed on the fixed shaft 721 through the reserved through hole at both ends, and the reserved hole diameter is consistent with the outer diameter of the fixed shaft 721. The fixed connecting rod 723 is provided with a groove at both ends of the vertical surface, and the groove length is consistent with the length of the slot at the end of the direction connecting rod 722. The bottom of the groove is beveled, and the bevel is located on one side of the direction connecting rod 722. An inclined rectangular slot is reserved at the abdominal position of the vertical surface of the fixed connecting rod 723, which is inclined to one side of the direction connecting rod 722 for the insertion of the direction connecting rod 722. The oblique length of the slot is 3 times the length of the transverse intersection line at this position of the direction connecting rod 722, and the vertical height of the slot is 1.4 times the thickness of the direction connecting rod 722. After the installation of each part of the connecting rod mechanism is completed, the final fixed bolt 724 is used to limit the vertical movement.

[0056] When water flows past the left and right sides of the fin 72, the velocity potential difference between the two sides causes the fin 72 to swing in the opposite direction of the water flow. When the velocity potential of the water flowing past the left side of the fin 72 is greater than that of the water flowing past the right side, the fin 72 closer to the left side, under the action of the larger velocity potential, generates a rightward deflection force. This deflection force "pushes" the other two fins 72 within the range defined by the slots at both ends of the directional link 722 via the fixed link 723 connected to the fixed shaft 721, resulting in a same-direction deflection. The links then form a linkage mechanism, exerting a synergistic "force" in the same direction. This further adds to the deflection force, generating a torque that causes the entire power generation device to rotate horizontally, thereby adjusting the optimal geometric angle of attack of the shroud. This rotation stops when the power generation device faces the incoming flow direction and the velocity potential difference of the main stream flowing past the outer wall of the shroud decreases. When the velocity of the water flowing through the right side of the rudder 72 is greater than that of the water flowing through the left side of the rudder 72, the rudder 72 rotates in the opposite direction. Finally, the fixing bolts 724 limit the vertical movement of the directional link 722 and the fixed link 723, so that they can rotate horizontally within the range of the notches at both ends of the directional link 722.

[0057] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make modifications, substitutions and variations within the technical scope disclosed by the present invention without departing from the spirit and principles of the present invention.

Claims

1. An adaptive spiral flow power generation device with damping vortex lines, characterized in that: include: A base (1) for fixing the power generation device to a riverbed or seabed substrate; The column (2) is fixed on the base (1), and the damping vortex lines (21) are equidistantly arranged on the flow-facing surface of the column (2); A support platform (3), the lower end of which is connected to the column (2), and the upper end of which is connected to the deflector (4), and the support platform (3) can rotate horizontally relative to the column (2); The deflector (4) is a variable diameter circular tube structure, and is coaxially provided with a flange (41), a contraction section (42), a diffusion section (43) and a trailing edge (44) along the direction of water flow; The threaded fin (5) is arranged on the inner wall of the air deflector (4) in an upward circular direction and passes through the flange (41) of the air deflector (4) to the end of the diffuser section (43); A generator set (6) is located in the diffuser section (43) of the shroud (4); The rudder (7) is arranged outside the end of the deflector (4) and cooperates with the support (3) to make the deflector (4) rotate in a plane, and automatically adjusts the geometric angle of attack of the deflector (4) so ​​that it always faces the mainstream.

2. The adaptive spiral flow power generation device with damping vortex lines according to claim 1, characterized in that: The column (2) is a cylindrical structure fixed at the geometric center of the base (1); the damping vortex line (21) is a uniformly arranged right-handed vortex line, protruding from the surface of the column (2) and extending from the top of the flow-facing surface of the column (2) to the bottom of the flow-facing surface.

3. The adaptive spiral flow power generation device with damping vortex lines according to claim 1, characterized in that: The lower part of the support platform (3) is an inward-sunk cylindrical groove, in which a slewing bearing (31) is nested. The slewing bearing (31) is screwed to the convex shaft (22) at the top of the column (2), and slewing bearing sealing plates (32) are provided at both ends of the slewing bearing (31); the upper part of the support platform (3) is connected to the diffusion section (43) of the guide cover (4), and the connection part is concave and gradually expands in the direction of water flow. The intersection line of the notches is a parabola of the opening along the direction of water flow.

4. The adaptive spiral flow power generation device with damping vortex lines according to claim 1, characterized in that: The flange (41) is the inlet of the deflector (4), the inner edge wall of which contracts toward the axis side and the outer edge wall of which expands toward the side away from the axis; the contraction section (42) is a trumpet-shaped structure that contracts along the water flow direction, and the inner and outer walls contract toward the axis side along the same functional curve; the diffusion section (43) is a gradually expanding cup-shaped structure, and the inner and outer wall surfaces are parallel straight lines; the trailing edge (44) is a tip wing-shaped structure with the inner and outer walls staggered and contracted.

5. The adaptive spiral flow power generation device with damping vortex lines according to claim 4, characterized in that: The angle of the inner edge contraction wall of the flange (41) along the water flow direction varies in the range of 90° to 15.8°, and the angle of the outer edge expansion wall along the water flow direction varies in the range of 90° to 0°. The length of the flange (41) along the water flow direction is 2 / 25 of the total length of the deflector (4), and the cross-sectional contraction rate of the inner wall of the flange (41) is 23.68%. The contraction section (42) is adjacent to the flange (41), and the end is the minimum hydraulic radius of the inner cavity of the deflector (4). The length of the contraction section (42) along the water flow direction is 2 / 25 of the total length of the deflector (4). The length of the diffuser (43) is 6 / 25 of the total length, and the cross-sectional shrinkage rate of the contraction section (42) is 35.86%; the diffusion angle of the diffuser (43) is 5°, the length of the diffuser (43) along the water flow direction is 12 / 25 of the total length of the guide cover (4), and the area expansion ratio is 1:1.4; the angle of the inner wall surface of the trailing edge (44) along the water flow direction varies in the range of 3.2° to 9.5°, the angle of the outer wall surface along the water flow direction varies in the range of 6.1° to 19.5°, and the length of the trailing edge (44) along the water flow direction is 1 / 5 of the total length of the guide cover (4).

6. The adaptive spiral flow power generation device with damping vortex lines according to claim 1, characterized in that: The threaded ribs (5) are right-handed protrusions arranged on the inner wall of the air deflector (4) in an upward circular direction. The threaded ribs (5) are evenly distributed and pass through the flange (41) of the air deflector (4) to the end of the diffuser section (43).

7. The adaptive spiral flow power generation device with damping vortex lines according to claim 1, characterized in that: The generator set (6) comprises blades (61), a generator (62), a generator frame (63) and positioning bolts (64), wherein the generator frame (63) is fixed on the diffuser section (43) of the shroud, and positioning bolts (64) are provided on the generator frame for fixing the generator (62), and the blades (61) are connected to the rotor of the generator (62).

8. The adaptive spiral flow power generation device with damping vortex lines according to claim 7, characterized in that: A cable (8) is led out from the generator (62), and the power generated by the generator is connected to an onshore power storage room or a municipal power supply cable through the cable (8).

9. The adaptive spiral flow power generation device with damping vortex lines according to claim 1, characterized in that: The rudder (7) is a wing-shaped structure, consisting of multiple groups of front rudders (71) and tail rudders (72). The front rudder (71) is arranged on the top of the outer wall surface at the end of the shroud diffuser section (43), and the tail rudder (72) is plugged into the rear end of the front rudder (71). The tail rudder (72) can swing relative to the front rudder (71). Each group of tail rudders (72) is connected by a connecting rod mechanism. The swing of the tail rudder (72) and the coordinated action of the connecting rod mechanism form a torque that causes the power generation equipment to rotate horizontally as a whole, so as to adjust the optimal geometric attack angle of the shroud (4).

10. The adaptive spiral flow power generation device with damping vortex lines according to claim 9, characterized in that: The connecting rod mechanism comprises a fixed axis (721), a directional connecting rod (722), and a fixed connecting rod (723). Adjacent rudders (72) are connected via the directional connecting rod (722) and the fixed connecting rod (723). The rudder (72) is provided with a fixed axis (721). Both ends of the directional connecting rod (722) and the fixed connecting rod (723) are connected to the fixed axis (721). The directional connecting rod (722) passes through the belly notch of the fixed connecting rod (723) to form a cross X shape. A plurality of adjacent X-shaped structures are sequentially connected to form a connecting rod mechanism. Under the velocity potential difference of water flowing through the left and right sides of the rudder (72), the fixed connecting rod (723) connected to the fixed axis (721) pushes the rudder (72) to generate a deflection effect in the same direction within the notch range at both ends of the directional connecting rod (722). The connecting rod mechanism superimposes the deflection.

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