A synchronous vibration suppression and power generation device and method for ocean riser based on revolution and rotation cooperation

Abstract

The present application relates to a kind of ocean riser synchronous vibration suppression and power generation device and method of revolution and rotation coordination, device is composed of revolution module and rotation module two parts.Revolution module is composed of large cylindrical roller bearing, internal gear, sun gear, half cylindrical chuck, planet rod and planet gear, rotation module is composed of small cylindrical roller bearing, helical impeller sleeve, arc magnet.Sun gear is fixed on the outer wall of ocean riser, planet gear is engaged with internal gear outside planet gear and sun gear inside planet gear respectively.under the impact of ocean current, internal gear revolves around ocean riser, so as to drive planet gear and planet rod revolve around ocean riser, at the same time, helical impeller sleeve will drive arc magnet rotate around helical coil wound on planet rod, while disturbing the separation of boundary layer around ocean riser, convert ocean current kinetic energy into electric energy.

Description

Technical Field

[0001] The present invention belongs to the field of marine energy capture and marine riser vortex-induced vibration suppression devices, and specifically relates to a marine riser synchronous vibration suppression and power generation device and method with coordinated revolution and rotation. Background Art

[0002] Energy is the material foundation and driving force behind the progress of human civilization, and oil and gas resources are a crucial component of this energy source. With the gradual exploitation of proven onshore oil and gas resources, countries around the world are shifting their focus to the deep blue ocean. my country, with its vast maritime territory, is rich in oil and gas resources, as well as in renewable resources with enormous potential, such as tidal energy, wave energy, temperature gradient energy, salinity gradient energy, and ocean current energy, which await vigorous development and utilization.

[0003] In the process of developing marine oil and gas resources, marine risers are the core equipment connecting the seabed wellhead and the offshore oil and gas operating platform. However, they are exposed to a complex marine environment for a long time. When the ocean current bypasses the marine riser, vortices that are periodically discharged alternately appear behind the riser. The generation and migration of the vortexes cause periodic pulsating fluid forces to act on the marine riser, inducing the marine riser to vibrate. This vibration phenomenon caused by the alternating discharge of vortices is called vortex-induced vibration. When the frequency of vortex shedding is close to a certain natural frequency of the marine riser, the amplitude will increase sharply, accelerating the fatigue damage of the riser and causing the riser to break, resulting in significant economic losses and damaging the local marine ecological environment. Therefore, the development of a vortex-induced vibration suppression device for marine risers is one of the key scientific issues to ensure the safe exploitation of marine oil and gas.

[0004] Developing new marine energy is an important measure to further promote the transformation of energy structure. If additional devices are added to the outside of the marine riser so that it can suppress the vortex-induced vibration of the marine riser while converting ocean current energy into electrical energy, the goal of obtaining energy locally and generating energy on site will be achieved, which is a new way to develop and utilize new marine energy. Summary of the Invention

[0005] In order to solve the problems raised by the background art, the purpose of the present invention is to provide a synchronous vibration suppression and power generation device and method for a marine riser with coordinated revolution and rotation.

[0006] In order to achieve the above-mentioned purpose, the device of the present invention adopts the following technical solutions:

[0007] A synchronous vibration suppression and power generation device for a marine riser with coordinated revolution and rotation consists of a revolution module and a rotation module. The revolution module comprises two pairs of large outer bearing rings, two pairs of large inner bearing rings, thirty-two large cylindrical rollers, a pair of internally meshed gears, four pairs of S-shaped blades, a pair of sun gears, two pairs of semi-cylindrical chucks, five planetary rods, and five pairs of planetary gears. The height of the semi-cylindrical chucks is equal to that of the sun gears. A semi-circular through-hole with a diameter equal to the outer diameter of the marine riser is located in the center of the semi-cylindrical chucks. A rectangular groove is located in the center of the outer wall of the semi-cylindrical chucks. The bottom of the semi-cylindrical chucks is machined with a semi-annular tray with a diameter greater than the outer diameter of the semi-cylindrical chucks. Two symmetrical threaded holes are located on either side of the semi-annular tray. The pair of semi-cylindrical chucks are bolted to the exterior of the marine riser through the threaded holes on either side of the semi-annular trays. The height between the two pairs of semi-cylindrical chucks is equal to the height of one planetary rod. The sun gear has a circular hole in its center with a diameter equal to the outer diameter of the semi-cylindrical chuck. A pair of rectangular latches are symmetrically positioned on the inner wall of this hole. The two sun gears are mounted on the outer surfaces of the upper and lower pairs of semi-cylindrical chucks, respectively, with their lower ends contacting the semi-circular plates of the semi-cylindrical chucks. The rectangular latch in the central circular hole of the sun gear inserts into a rectangular groove in the outer wall of the semi-cylindrical chuck, securing the sun gear.

[0008] Two large bearing inner rings are mounted on the outer wall of the marine riser at the height of a planetary rod. The diameter of each large bearing inner ring is equal to the outer diameter of the marine riser. The outer surface of the large bearing inner rings is machined with a semi-cylindrical roller groove and four vertically symmetrical threaded holes. Large cylindrical rollers are placed in the semi-cylindrical roller grooves of the large bearing inner rings. Bolts secure the pair of large bearing inner rings to the outer wall of the marine riser. The inner surface of the large bearing outer rings is equipped with a cylindrical roller annular groove. Two symmetrical semi-circular large bearing outer rings are bolted to the outside of the large bearing inner rings, with the large cylindrical rollers placed in the cylindrical roller annular grooves of the large bearing outer rings.

[0009] The inner meshing gear is located outside the sun gear and has the same vertical central axis as the sun gear. Four S-shaped blades and two symmetrical T-shaped grooves are equidistantly arranged on the outer surface of each inner meshing gear in the circumferential direction. A threaded hole is formed on the surface of each T-shaped groove. An annular tray is formed on the bottom end surface of the inner meshing gear. The outer diameter of the annular tray is equal to the outer diameter of the inner meshing gear, the inner diameter of the annular tray is smaller than the inner diameter of the inner meshing gear, and the height of the annular tray is the same as the height of the semicircular tray at the bottom of the semicircular chuck. Five planet gears are arranged uniformly in the circumferential direction between the sun gear and the inner meshing gear. The height of the planet gears is the same as the height of the sun gear and the inner meshing gear. The inner meshing gear is fixedly connected with the outer ring of the large bearing through the T-shaped groove on the outer surface of the inner meshing gear, so as to realize the rotary motion of the inner meshing gear around the marine riser. A helical groove capable of winding a wire is formed on the outer surface of each planet rod. Threaded holes are formed on both ends of the planet rod for cooperation with the planet gears. The height of the helical groove on the outer surface of the planet rod is consistent with the height of the helical impeller sleeve. Both ends of the planet rod are connected with a planet gear having a threaded through hole. The planet gears are engaged with the inner meshing gears outside the planet gears and the sun gears inside the planet gears. The normal modulus and the pressure angle of the planet gears are consistent with the normal modulus and the pressure angle of the sun gears and the inner meshing gears, so as to ensure the engagement of the planet gears with the inner meshing gears and the sun gears.

[0010] The rotation module is composed of fifteen helical impeller sleeves, thirty pairs of small bearing outer rings, thirty pairs of small bearing inner rings, four hundred and eighty small cylindrical rollers, fifteen pairs of arc-shaped magnets and fifteen pairs of arc-shaped buckles. The diameter of each semicircular small bearing inner ring is equal to the outer diameter of the planet rod. A semicircular roller groove and four symmetrical threaded holes are formed on the outer surface of the small bearing inner ring. A small cylindrical roller is placed in the semicircular roller groove of the small bearing inner ring. A pair of semicircular small bearing inner rings are fixedly installed on the outer wall of the planet rod by bolts. A cylindrical roller ring groove is formed on the inner surface of each circular small bearing outer ring. Two symmetrical semicircular small bearing outer rings are fixed on the small bearing inner ring by bolts, and the small cylindrical rollers are placed in the cylindrical roller ring groove of the small bearing outer ring.

[0011] Each spiral impeller sleeve has a circular through-hole with the same diameter as the outer ring of the small bearing. Three spiral blades with diversion holes are machined into the outer surface of the spiral impeller sleeve at equal intervals along the circumference. A pair of symmetrical T-shaped grooves are machined into the upper and lower end surfaces of the spiral impeller sleeve. Furthermore, a pair of symmetrical annular grooves are machined axially at one end of the spiral impeller sleeve. The height of the annular grooves is equal to the combined height of the arc-shaped magnet and the annular clip. The arc-shaped magnet is embedded in the annular grooves, which are secured to the spiral impeller sleeve by the annular clip and screws through the threaded holes in the annular clip. The spiral impeller sleeve is fixed to the T-shaped grooves of the small bearing outer ring through the upper and lower surfaces of the spiral impeller sleeve using I-shaped keys and screws, enabling the spiral impeller sleeve to rotate around the planetary rod. The five planetary rod sets have different numbers of spiral impeller sleeves: one, two, three, four, or five.

[0012] A method for synchronous vibration suppression and power generation for marine risers with coordinated revolution and rotation is provided by using the aforementioned device. When the ocean current impacts the device in any direction, the two internal gears rotate in the same direction around the marine riser driven by the ocean current. At the same time, the outer ring of the large bearing fixedly connected to the internal gears also rotates around the marine riser together with the internal gears. The five pairs of planetary gears meshing with the internal gears and the sun gear will rotate around the marine riser with the five planetary rods, which will interfere with the flow field near the marine riser and destroy the development of the boundary layer and the formation of vortices. In addition, the ocean current impacts the spiral blades on the surface of the spiral impeller sleeve, causing the entire spiral impeller sleeve to rotate around the planetary rods. The spiral blades on the surface of the spiral impeller sleeve can cope with incoming flows from different directions and effectively interfere with the flow field around the marine riser, further destroying the formation and development of the vortex. The ocean current flows through the guide holes in the spiral blades, diverting the flow while reducing the drag on the impeller sleeves. The current flowing out of the guide holes also disturbs the flow field around the marine riser. Because each planetary rod is equipped with a different number of impeller sleeves, the fifteen impeller sleeves rotate at different water depths, perturbing the three-dimensional vortex structure around the marine riser, further disrupting the boundary layer separation around the marine riser and thus disrupting the formation and development of the vortex. Each impeller sleeve is embedded with two arc-shaped magnets. When the ocean current strikes the impeller sleeves, they drive the arc-shaped magnets to rotate around the spiral coils wrapped around the planetary rods, thereby converting the kinetic energy of the ocean current into electrical energy.

[0013] The present invention has the following advantages due to the adoption of the above technical solution:

[0014] 1. The device of the present invention utilizes a gear set and cylindrical roller bearings to achieve the rotation of the S-shaped blades. The rotation and revolution of the planetary rods and spiral impeller sleeves at different levels, as well as the interference of the diversion holes, can effectively suppress the vortex-induced vibration of the marine riser.

[0015] 2. The tooth profile of the planetary gear set of the device of the present invention is an involute helical gear, which has the characteristics of smooth transmission, low resistance, and large overlap.

[0016] 3. The rotation of the spiral impeller sleeve of the device of the present invention generates electric current, realizing the function of capturing ocean current energy and converting it into electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the device of the present invention;

[0018] Figure 2 This is a schematic structural diagram of a bearing outside a marine riser of the device of the present invention;

[0019] Figure 3 This is a schematic structural diagram of the planetary gear set of the device of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the sun gear of the device of the present invention;

[0021] Figure 5 This is a schematic structural diagram of the planetary rod of the device of the present invention;

[0022] Figure 6 This is a schematic structural diagram of the spiral impeller sleeve of the device of the present invention;

[0023] Figure 7 This is a schematic diagram of the assembly of the arc magnet and the spiral impeller sleeve of the device of the present invention;

[0024] Figure 8 This is a schematic diagram of the assembly of the spiral impeller sleeve and the cylindrical roller bearing outside the planetary rod of the device of the present invention;

[0025] Among them: 1. Marine riser; 2. Large bearing outer ring; 3. Large bearing inner ring; 4. Large cylindrical roller; 5. S-shaped blade; 6. Internal meshing gear; 7. Spiral impeller sleeve; 8. Planetary rod; 9. Planetary gear; 10. Sun gear; 11. Semi-cylindrical roller groove; 12. Cylindrical roller annular groove; 13. T-shaped groove; 14. I-shaped key; 15. Semi-cylindrical chuck; 16. Ring tray; 17. Rectangular pin; 18. Rectangular groove; 19. Semi-ring tray; 20. Spiral groove; 21. Annular groove; 22. Diversion hole; 23. Spiral blade; 24. Annular buckle; 25. Arc magnet; 26. Small bearing inner ring; 27. Small cylindrical roller; 28. Small bearing outer ring. DETAILED DESCRIPTION

[0026] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0027] A synchronous vibration suppression and power generation device for a marine riser with coordinated revolution and rotation consists of a revolution module and a rotation module. The revolution module comprises two pairs of large bearing outer rings 2, two pairs of large bearing inner rings 3, thirty-two large cylindrical rollers 4, a pair of internally meshed gears 6, four pairs of S-shaped blades 5, a pair of sun gears 10, two pairs of semi-cylindrical chucks 15, five planetary rods 8, and five pairs of planetary gears 9. The height of the semi-cylindrical chucks 15 is equal to that of the sun gears 10. A semi-circular through-hole with a diameter equal to the outer diameter of the marine riser 1 is defined in the center of the semi-cylindrical chuck 15. A rectangular groove 18 is defined in the center of the outer wall of the semi-cylindrical chuck 15. A semi-annular tray 19 with a diameter greater than the outer diameter of the semi-cylindrical chuck 15 is machined at the bottom end of the semi-cylindrical chuck 15. Two symmetrical threaded holes are defined on either side of the semi-annular tray 19. A pair of semi-cylindrical chucks 15 are bolted to the exterior of the marine riser 1 through threaded holes on either side of a semi-annular tray 19. The height between the two pairs of semi-cylindrical chucks 15 is equal to the height of one planetary rod 8. A circular through-hole with a diameter equal to the outer diameter of the semi-cylindrical chuck 15 is machined into the center of the sun gear 10, and a pair of rectangular latches 17 are symmetrically positioned on the inner wall of this circular through-hole. The two sun gears 10 are mounted on the exterior of the upper and lower pairs of semi-cylindrical chucks 15, respectively, with their lower end faces contacting the semi-annular trays 19 of the semi-cylindrical chucks 15. The rectangular latches 17 in the central circular through-holes of the sun gears 10 are inserted into rectangular grooves 18 in the outer walls of the semi-cylindrical chucks 15, securing the sun gears 10.

[0028] Two large bearing inner rings 3 are mounted on the outer wall of the marine riser 1 at the height of one planetary rod 8. The diameter of each large bearing inner ring 3 is equal to the outer diameter of the marine riser 1. The outer surface of each large bearing inner ring 3 is machined with a semi-cylindrical roller groove 11 and four vertically symmetrical threaded holes. Large cylindrical rollers 4 are placed in the semi-cylindrical roller grooves 11 of the large bearing inner rings 3. Bolts secure the pair of large bearing inner rings 3 to the outer wall of the marine riser 1. The inner surface of the large bearing outer ring 2 is provided with a cylindrical roller annular groove 12. Two symmetrical semi-circular large bearing outer rings 2 are bolted to the outside of the large bearing inner ring 3, with the large cylindrical rollers 4 placed in the cylindrical roller annular grooves 12 of the large bearing outer ring 2.

[0029] The internal gears 6 are positioned outside the sun gear 10 and share the same vertical central axis. Each internal gear 6 has four S-shaped blades 5 and two symmetrical T-shaped grooves 13 arranged equidistantly along the circumference of its outer surface. Each T-shaped groove 13 is threaded. An annular plate 16 is machined on the bottom end face of the internal gear 6. Its outer diameter is equal to that of the internal gear 6, while its inner diameter is smaller. The height of the annular plate 16 is the same as that of the semi-annular plate 19 at the bottom of the semi-cylindrical chuck 15. Five planetary gears 9 are evenly spaced circumferentially between the sun gear 10 and the internal gear 6. The internal gears 6 are fixedly connected to the outer ring 2 of the large bearing via an I-shaped key 14 via the T-shaped grooves 13 on their outer surfaces, enabling rotation of the internal gear 6 around the marine riser 1. The outer surface of each planetary rod 8 is processed with a spiral groove 20 for winding a wire, and both ends of the planetary rod 8 are processed with threads that match the planetary gear 9. The height of the spiral groove 20 on the outer surface of the planetary rod 8 is consistent with the height of the spiral impeller sleeve 7.

[0030] The rotation module consists of fifteen spiral impeller sleeves 7, thirty pairs of small bearing outer rings 28, thirty pairs of small bearing inner rings 26, four hundred and eighty small cylindrical rollers 27, fifteen pairs of arc-shaped magnets 25, and fifteen pairs of annular buckles 24. The diameter of each semicircular small bearing inner ring 26 is equal to the outer diameter of the planetary rod 8. The outer surface of each small bearing inner ring 26 is machined with a semi-cylindrical roller groove and four symmetrical threaded holes. The small cylindrical rollers 27 are placed in the semi-cylindrical roller grooves of the small bearing inner ring 26. Bolts secure the pair of semicircular small bearing inner rings 26 to the outer wall of the planetary rod 8. The inner surface of each semicircular small bearing outer ring 28 is also equipped with a cylindrical roller annular groove. Two symmetrical semicircular small bearing outer rings 28 are bolted to the outside of the small bearing inner ring 26, with the small cylindrical rollers 27 placed in the cylindrical roller annular grooves of the small bearing outer ring 28.

[0031] Each spiral impeller sleeve 7 has a circular through-hole with the same diameter as the small bearing outer ring 28 in the center. Three spiral blades 23 with diversion holes 22 are machined into the outer surface of the spiral impeller sleeve 7 at equal intervals along the circumference. A pair of symmetrical T-shaped grooves 13 are machined into the upper and lower end surfaces of the spiral impeller sleeve 7. Furthermore, a pair of symmetrical annular grooves 21 are machined axially at one end of the spiral impeller sleeve 7. The height of the annular grooves 21 is equal to the sum of the heights of the arc-shaped magnet 25 and the annular clip 24. The arc-shaped magnet 25 is embedded in the annular grooves 21 and is secured to the spiral impeller sleeve 7 by the annular clip 24 and screws through the threaded holes in the annular clip 24. The spiral impeller sleeve 7 is fixedly connected to the T-shaped grooves 13 of the small bearing outer ring 28 on the upper and lower surfaces of the spiral impeller sleeve 7 by I-shaped keys 14 and screws, thereby enabling the spiral impeller sleeve 7 to rotate around the planetary rod 8. The five planetary rods 8 are respectively equipped with one, two, three, four and five spiral impeller sleeves 7 .

[0032] The synchronous vibration suppression and power generation device for marine risers with coordinated revolution and rotation provides a synchronous vibration suppression and power generation method for marine risers with coordinated revolution and rotation. When the ocean current hits the device in any direction, the two internal gears 6 rotate in the same direction around the marine riser 1 under the drive of the ocean current, and at the same time, the outer ring 2 of the large bearing fixedly connected to the internal gear 6 will also rotate around the marine riser 1 together with the internal gear 6; the five pairs of planetary gears 9 meshing with the internal gear 6 and the sun gear 10 will rotate around the marine riser 1 with the five planetary rods 8, which will interfere with the flow field near the marine riser 1 and destroy the development of the boundary layer and the formation of the vortex; in addition, the ocean current impacts the spiral blades 23 on the surface of the spiral impeller sleeve 7, causing the entire spiral impeller sleeve 7 to rotate around the planetary rods; the spiral blades 23 on the surface of the spiral impeller sleeve 7 can cope with the incoming flow in different directions, and effectively interfere with the flow field around the marine riser 1, further destroying the formation and development of the vortex. The ocean current passes through the guide holes 22 on the spiral blades 23, which diverts the current and reduces the drag force on the spiral impeller sleeve 7. The ocean current flowing out of the guide holes 22 also disturbs the flow field around the marine riser 1. Since each planetary rod 8 is equipped with a different number of spiral impeller sleeves 7, the fifteen spiral impeller sleeves 7 rotate at different water depths, which disturbs the three-dimensional vortex structure around the marine riser 1, further disrupting the boundary layer separation around the marine riser 1, thereby destroying the formation and development of the vortex. Two arc magnets 25 are embedded in each spiral impeller sleeve 7. When the ocean current hits the spiral impeller sleeve 7, the spiral impeller sleeve 7 drives the arc magnets 25 to rotate around the spiral coil wrapped around the planetary rod 8, thereby converting the kinetic energy of the ocean current into electrical energy.

Claims

1. A synchronous vibration suppression and power generation device for a marine riser with coordinated revolution and rotation, comprising a rotation module and a revolution module; the revolution module comprises a large bearing outer ring (2), a large bearing inner ring (3), a large cylindrical roller (4), an S-shaped blade (5), an internal meshing gear (6), a sun gear (10), a planetary rod (8), a planetary gear (9), and a semi-cylindrical chuck (15); the rotation module comprises a spiral impeller sleeve (7), a small bearing inner ring (26), a small bearing outer ring (28), a small cylindrical roller (27), an arc magnet (25), and an annular buckle (24); the diameter of the large bearing inner ring (3) is equal to the outer diameter of the marine riser (1), and the outer surface of the large bearing inner ring (3) is reinforced with a plurality of spherical rollers. The invention relates to a device for rotating a large bearing having a semi-cylindrical roller groove (11) and four threaded holes symmetrically arranged in the upper and lower directions; two large bearing inner rings (3) are installed on the outer wall of the marine riser (1) at the height of a planetary rod (8); a cylindrical roller annular groove (12) is provided on the inner surface of the large bearing outer ring (2); two symmetrical large bearing outer rings (2) are fixed to the outside of the large bearing inner ring (3) by bolts; the height of the large cylindrical roller (4) is consistent with the height of the cylindrical roller annular groove (12) of the large bearing outer ring (2) and the semi-cylindrical roller groove (11) of the large bearing inner ring (3); the height of the semi-cylindrical chuck (15) is equal to the height of the sun gear (10); a cylindrical roller having a diameter equal to the outer diameter of the marine riser (1) is provided in the middle of the semi-cylindrical chuck (15). A semicircular through hole; a rectangular groove (18) is formed in the middle of the outer wall of the semi-cylindrical chuck (15); a semi-annular tray (19) having a diameter larger than the outer diameter of the semi-cylindrical chuck (15) is processed at the bottom end of the semi-cylindrical chuck (15); two symmetrical threaded holes are formed on both sides of the semi-annular tray (19); a pair of semi-cylindrical chucks (15) are connected and fixed to the outside of the marine riser (1) by bolts through the threaded holes on both sides of the semi-annular tray (19); five planetary gears (9) having the same height as the sun gear (10) and the internal meshing gear (6) are evenly arranged along the circumferential direction between the sun gear (10) and the internal meshing gear (6); the diameter of the inner ring (26) of the small bearing is equal to that of the planetary rod (8 ), and the outer surface of the small bearing inner ring (26) is processed with a semi-cylindrical roller groove and four symmetrical threaded holes; two small bearing inner rings (26) are installed on the outer wall of the planetary rod (8) according to the height of a spiral impeller sleeve (7); the inner surface of the small bearing outer ring (28) is provided with a cylindrical roller ring groove; two symmetrical small bearing outer rings (28) are fixed to the outside of the small bearing inner ring (26) by bolts; the height of the small cylindrical roller (27) is consistent with the height of the cylindrical roller ring groove of the small bearing outer ring (28) and the semi-cylindrical roller groove of the small bearing inner ring (26); the central part of the spiral impeller sleeve (7) is processed with a circular through hole with the same diameter as the small bearing outer ring (28); it is characterized by: The outer surface of the internal meshing gear (6) is provided with four S-shaped blades (5) and two symmetrical T-shaped grooves (13) arranged at equal intervals along the circumferential direction, and the surface of each T-shaped groove (13) is processed with a threaded hole; the bottom end surface of the internal meshing gear (6) is processed with an annular tray (16), the outer diameter of the annular tray (16) is equal to the outer diameter of the internal meshing gear (6), and the inner diameter is smaller than the inner diameter of the internal meshing gear (6); the height of the annular tray (16) is the same as the height of the semi-annular tray (19) at the bottom of the semi-cylindrical chuck (15); the internal meshing gear (6) is processed with the T-shaped groove (13) on the outer surface The key (14) is fixedly connected to the outer ring of the large bearing (2); the center of the sun gear (10) is processed with a circular through hole with a diameter equal to the outer diameter of the semi-cylindrical chuck (15), and a pair of rectangular pins (17) are symmetrically provided on the inner wall of the circular through hole; both ends of the planetary rod (8) are processed with threads matching the planetary gear (9); the outer surface of the planetary rod (8) is processed with a spiral groove (20) for winding a wire; the planetary gear (9) is respectively meshed with the internal meshing gear (6) outside the planetary gear (9) and the sun gear (10) inside the planetary gear (9); the planetary gear (9) is meshed with the inner ...). The normal module and pressure angle are consistent with those of the sun gear (10) and the internal meshing gear (6) to ensure meshing of the planetary gear (9) with the internal meshing gear (6) and the sun gear (10); the outer surface of the spiral impeller sleeve (7) is processed with three spiral blades (23) with guide holes (22) at equal distances along the circumference; the upper and lower end surfaces of the spiral impeller sleeve (7) are each processed with a pair of symmetrical T-shaped grooves (13), and at the same time, a pair of symmetrical annular grooves (21) are processed along the axial direction at one end of the spiral impeller sleeve (7); the height of the annular groove (21) is equal to the arc magnetic The sum of the heights of the iron (25) and the annular buckle (24); the arc magnet (25) is embedded in the annular groove (21), and the arc magnet (25) is fixed to the spiral impeller sleeve (7) by the annular buckle (24) and screws through the threaded holes of the annular buckle (24); the spiral impeller sleeve (7) is fixedly connected to the T-shaped groove (13) of the small bearing outer ring (28) by the I-shaped key (14) and screws through the upper and lower surfaces of the spiral impeller sleeve (7); the number of spiral impeller sleeves (7) set on the five planetary rods (8) is different, and they are respectively set with one, two, three, four, and five spiral impeller sleeves (7).

2. A method for synchronous vibration suppression and power generation for a marine riser with coordinated revolution and rotation, using the apparatus for synchronous vibration suppression and power generation for a marine riser with coordinated revolution and rotation as claimed in claim 1, characterized in that: When the ocean current hits the device in any direction, the two internal meshing gears (6) rotate in the same direction around the ocean riser (1) driven by the ocean current, and at the same time, the outer ring of the large bearing (2) fixedly connected to the internal meshing gear (6) will also rotate around the ocean riser (1) together with the internal meshing gear (6); the five pairs of planetary gears (9) meshed with the internal meshing gear (6) and the sun gear (10) will drive the five planetary rods (8) to rotate around the ocean riser (1), which will interfere with the flow field near the ocean riser (1), destroying the development of the boundary layer and the formation of the vortex; in addition, the ocean current hits the spiral blades (23) on the surface of the spiral impeller sleeve (7), causing the entire spiral impeller sleeve (7) to rotate around the planetary rods; the spiral blades (23) on the surface of the spiral impeller sleeve (7) can cope with the incoming flow in different directions and effectively interfere with the flow field around the ocean riser (1), further destroying the formation and Development; the ocean current passes through the guide holes (22) on the spiral blades (23), which reduces the drag force of the ocean current on the spiral impeller sleeve (7) while diverting the flow; the ocean current flowing out of the guide holes (22) also disturbs the flow field around the ocean riser (1); since each planetary rod (8) is equipped with a different number of spiral impeller sleeves (7), the fifteen spiral impeller sleeves (7) rotate at different water depths, which disturbs the three-dimensional vortex structure around the ocean riser (1), further disturbs the boundary layer separation around the ocean riser (1), thereby destroying the formation and development of the vortex; each spiral impeller sleeve (7) is embedded with two arc magnets (25), and when the ocean current hits the spiral impeller sleeve (7), the spiral impeller sleeve (7) drives the arc magnets (25) to rotate around the spiral coil wound on the planetary rod (8), thereby converting the kinetic energy of the ocean current into electrical energy.

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