A device and method for simultaneously achieving vibration reduction and heating through variable magnetic flux power generation.

Abstract

The application relates to a device and a method for realizing vibration reduction and heating simultaneously through variable magnetic flux power generation, which is composed of a variable magnetic flux power generation module and a vibration reduction and heating module. The vibration reduction and heating module comprises a sleeve, a liquid cavity and a vibration reduction and heating device. The variable magnetic flux power generation module comprises two fixed magnetic pole discs, one lifting magnetic pole disc, four auxiliary slide bars, eight telescopic springs and four lifting impellers. The lifting impellers are installed on the upper and lower sides of the lifting magnetic pole disc through fixed shafts. Under the action of the auxiliary slide bars, the telescopic springs and the lifting impellers, the standpipe vortex-induced vibration is inhibited. Meanwhile, under the action of the lifting force generated by the rotation of the lifting impellers, the compression and stretching of the telescopic springs and the magnetic force action of the magnetic poles of the lifting magnetic pole disc and the fixed magnetic pole disc, the magnetic flux between the magnets in the lifting magnetic pole disc and the fixed magnetic pole disc changes, and variable magnetic flux power generation is realized.

Description

Technical Field

[0001] This invention belongs to the field of marine riser laying technology, specifically relating to a device and method for simultaneously achieving vibration reduction and heating through variable magnetic flux power generation. Background Technology

[0002] Improving energy self-sufficiency and supply security, and ensuring a stable energy supply, is crucial for national economic development. Increasing the development of deep-sea oil and gas resources is a key measure to address the energy crisis. As the link between subsea oil and gas wellheads and floating installations, offshore risers operate in complex and variable flow environments, making them susceptible to long-term vibration responses and fatigue damage. Furthermore, due to the low temperatures, high pressures, and intense heat exchange in the deep sea, as well as the high wax content, high pour point, and high viscosity of crude oil in some oilfields, deep-sea pipelines may face severe challenges such as crude oil "solidification" and blockage, threatening the safe operation of the pipeline. Therefore, simultaneously achieving vortex-induced vibration suppression and riser heating and insulation are key technologies for ensuring the safe operation of risers.

[0003] Vortex-induced vibration suppression is mainly divided into active and passive suppression. Active suppression methods require the injection of external energy to drive auxiliary devices, thereby disrupting the wake vortex. Passive suppression methods, on the other hand, do not require external energy injection. They primarily modify the shape of the riser surface by adding auxiliary devices, such as spiral plates and fairings, to alter the location of the boundary layer separation point and suppress the formation and development of wake vortices. These devices are often high-density, easily increasing the load on the riser and unable to adapt to constantly changing ocean currents. Furthermore, ocean current energy can be fully utilized for power generation and heating and insulation of marine risers, which is of great significance for alleviating the energy crisis and reducing environmental pollution. Summary of the Invention

[0004] To address the problems raised in the background art, the present invention aims to provide a device and method for simultaneously achieving vibration reduction and heating through variable magnetic flux power generation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for simultaneously achieving vibration reduction and heating through variable magnetic flux power generation consists of two parts: a variable magnetic flux power generation module and a vibration reduction and heating module. The vibration reduction and heating module mainly comprises a sleeve, liquid chambers, and vibration reduction heaters. The sleeve is welded from two symmetrical semi-cylindrical structures, sealed at the top and bottom by sealing rings. The inner diameter of the sleeve is larger than the outer diameter of the riser pipe. The sleeve is fitted over the riser pipe. Two protruding liquid chambers are symmetrically arranged on the inner wall of the sleeve, with the height of the protrusions being less than the gap between the sleeve and the outer diameter of the riser pipe. Two limiting holes are formed on the outer side of each liquid chamber, and vibration reduction heaters are installed in these limiting holes. The vibration reduction heater consists of a perforated heating groove, a sealing cover, an arc-shaped vibration damper, a cross support rod, and four heating springs. The perforated heating tank is an open cylindrical structure with evenly spaced perforations along its circumference. The outer diameter of the perforated heating tank is equal to the diameter of the limiting hole of the vibration damping heater. The perforated heating tank is inserted into the limiting hole into the liquid cavity and fixedly installed on the liquid cavity. A sealing cap is installed at the opening of the perforated heating tank to seal it; the sealing cap has a circular hole in its center. The arc-shaped vibration damper is a T-shaped structure composed of an arc-shaped damping plate and a cylindrical support rod. A conductor rod is installed inside the cylindrical support rod, and the conductor rod is connected to a wire to form a closed loop. One end of the cylindrical support rod is connected to the center of the convex surface of the arc-shaped damping plate, and the other end is connected to a cross support rod. The center of the cross support rod has a circular hole with a diameter larger than the diameter of the cylindrical support rod. The four protruding cuboid structures of the cross support rod have grooves in the middle, and the grooved ends face the convex surface of the arc-shaped damping plate. Four connecting rods are evenly connected circumferentially to a cylindrical support rod passing through one end of a circular hole. The included angle between any two connecting rods is 90°. The free ends of the connecting rods extend into the grooves of the cuboid block of the cross support rod and are connected to the crossbar at one end of a heating spring. The crossbar can move within the grooves of the cuboid block of the cross support rod under the action of the connecting rods. Each of the four extended cuboid blocks of the cross support rod is connected to a heating spring via a connecting rod. The other end of the heating spring is fixed to the inner wall of the perforated heating groove. A resistance wire is embedded in the end of the heating spring connected to the connecting rod. The resistance wire is connected to the conductor rod through a wire, and the resistance wire can transfer heat to the heating spring.

[0007] The variable magnetic flux power generation module consists of two fixed magnetic pole disks, one lifting magnetic pole disk, four auxiliary sliding rods, eight telescopic springs, and four lifting impellers. The fixed magnetic pole disk is a ring-shaped structure assembled from a disk with limiting holes, an annular magnet, and a disk with limiting grooves. The inner diameter of the fixed magnetic pole disk is equal to the outer diameter of the riser. The upper and lower fixed magnetic pole disks are fitted and fixed to the outer wall of the riser at intervals of one sleeve. The disk with limiting holes has eight evenly distributed circular holes along its circumference, the diameter of which is equal to the diameter of the auxiliary sliding rods. The inner and outer diameters of the annular groove of the disk with limiting grooves are equal to the inner and outer diameters of the annular magnet, respectively. The depth of the annular groove is equal to the thickness of the annular magnet, which is embedded within the annular groove of the disk with limiting grooves. Fixed rods are connected to both ends of the telescopic springs, and the diameter of the fixed rods is equal to the diameter of the auxiliary sliding rods. The upper fixed magnetic pole disk with a limiting hole is located on the lower side, and the lower fixed magnetic pole disk with a limiting hole is located on the upper side. The circular holes of the upper and lower fixed magnetic pole disks with limiting holes are aligned axially. The fixing rods of the auxiliary slide rod and telescopic spring are inserted into the circular holes of the disks with limiting holes for fixation.

[0008] The lifting magnetic pole disk is also a ring-shaped structure, assembled from two lifting disks with limiting holes, one lifting disk with limiting grooves, and four arc-shaped magnetic strips. The inner diameter of the lifting magnetic pole disk is larger than the outer diameter of the sleeve. The lifting magnetic pole disk is positioned between the upper and lower fixed magnetic pole disks. The lifting disk with limiting holes has four large circular holes of the same diameter evenly distributed along its circumference. The height of these large holes is equal to the thickness of the lifting disk, and the diameter of the large holes is greater than the diameter of the attached sliding rod. A small circular hole is formed between every two large circular holes along the circumference of the lifting disk with limiting holes. The diameter of the small hole is equal to the diameter of the fixing rod at the end of the telescopic spring, and the height of the small hole is equal to half the thickness of the lifting disk with limiting holes. The lifting disc with limiting grooves also has four identical large circular holes evenly distributed along its circumference. Between every two large circular holes are four identical arc-shaped grooves, with the arc-shaped grooves facing upwards. The curvature and depth of the arc-shaped grooves are the same as the curvature and thickness of the arc-shaped magnetic strip, which is embedded within the arc-shaped groove of the lifting disc with limiting grooves. Two lifting discs with limiting holes are respectively installed on the upper and lower sides of the lifting disc with limiting grooves. The small circular holes on the upper lifting disc with limiting grooves open upwards, while the small circular holes on the lower lifting disc with limiting grooves open downwards. The centers of the large circular holes on the lifting discs with limiting holes and the lifting discs with limiting grooves are on the same vertical line.

[0009] The lifting impeller is mounted on the upper and lower sides of the lifting magnetic pole disk via a fixed shaft. The fixed shaft is a stepped cylindrical structure with a larger diameter in the middle and smaller diameters at both ends. The outer diameter of the middle part of the cylinder is equal to the inner diameter of the large circular hole on the lifting disk with limiting holes. The height of the middle part of the cylinder is equal to the depth of the large circular hole on the lifting magnetic pole disk. The inner diameter of the middle part of the cylinder is equal to the inner diameter of the two smaller diameter cylinders at both ends, and is greater than the diameter of the auxiliary sliding rod. The outer diameter of the two smaller diameter cylinders at both ends is equal to the inner diameter of the bearing inner ring, and the height of the two smaller diameter cylinders at both ends is greater than the height of the bearing. The fixed shaft is fixed in the large circular hole of the lifting magnetic pole disk by upper and lower limiting rings. Two bearings are respectively installed on the outer walls of the two smaller diameter cylinders at both ends, with a gap between the bearings and the limiting rings. The rotating blades are fitted onto the outer rings of the bearings, and the tilt angles of the upper and lower rotating blades are consistent to generate lift in the same direction.

[0010] A device and method for simultaneously achieving vibration reduction and heating through variable magnetic flux power generation are provided. The ocean current impacts the rotating lifting impeller, and the lift generated by the impeller's rotation drives the lifting magnetic pole disk upwards. The upper telescopic spring is compressed, and the lower telescopic spring is stretched. The upper magnetic pole of the lifting disk has the same magnetism as the upper fixed magnetic pole disk. When the lifting magnetic pole disk moves upwards to a certain height, under the action of the telescopic spring force and the magnetic pole repulsion, the lifting magnetic pole disk turns downwards. When the lifting magnetic pole disk moves downwards to a certain position, the lower telescopic spring begins to compress, and the upper telescopic spring begins to stretch. Similarly, the lower magnetic pole of the lifting disk has the same magnetism as the lower fixed magnetic pole disk. After the lifting magnetic pole disk moves downwards a certain distance, under the action of the telescopic spring force, the magnetic pole repulsion, and the lift force of the lifting impeller, the lifting magnetic pole disk turns upwards again. Therefore, under the impact of the ocean current, the lifting magnetic pole disk reciprocates up and down. On the one hand, as the ocean current flows around the riser, the auxiliary sliding rods and telescopic springs around the riser can disrupt the flow boundary layer around the riser. At the same time, the rotation of the lifting impeller on the auxiliary sliding rod further disrupts the flow boundary layer. On the other hand, the reciprocating motion of the lifting magnetic pole disk under the interaction of the lift force of the lifting impeller, the force of the telescopic spring, and the magnetic force changes the flow direction around the riser in space, further disrupting the flow boundary layer and the vortices at the tail of the riser. Due to the change in the position of the lifting magnetic pole disk and the fixed magnetic pole disk, the magnetic flux between the magnets in the lifting magnetic pole disk and the fixed magnetic pole disk changes, thereby changing the magnetic flux in the closed loop formed by the conductor rod and the wire in the cylindrical support rod of the arc-shaped vibration damper, and thus generating a current. When current passes through the resistance wire inside the heating spring, the resistance wire generates heat and transfers it to the heating spring. The heating spring then heats the surrounding liquid, which flows out from the opening in the perforated heating tank, exchanging heat with the liquid in the liquid chamber. This raises the temperature of the entire liquid in the chamber, thus insulating the riser. When the riser vibrates, the vibration is transmitted to the arc-shaped vibration damper. Under the action of the arc-shaped vibration damper and the heating spring, the vibration of the riser is buffered and weakened. In addition, the vibration generated by the arc-shaped vibration damper causes the cylindrical support rod to reciprocate through the circular hole in the center of the cross support rod. Driven by the connecting rod, this causes the heating spring to undergo compression and stretching motion, stirring the liquid in the perforated heating tank, thereby enhancing heat transfer and improving the insulation effect of the liquid in the liquid chamber on the riser.

[0011] The present invention has the following advantages due to the adoption of the above technical solutions:

[0012] 1. The lifting impeller of the device of the present invention rotates under the action of ocean current, generating an upward lift force, which drives the lifting magnetic pole disk to move upward. Under the action of the extension spring force, the magnetic pole repulsion force and the lifting impeller lift force, the lifting magnetic pole disk moves up and down within a certain height range, which destroys the wake vortex and changes the magnetic flux.

[0013] 2. The device of the present invention enables self-generated power for heating and insulation of the riser while suppressing vortex-induced vibration of the riser.

[0014] 3. The auxiliary slide bar and lifting magnetic pole disk of the device of the present invention are made of lightweight materials, which are not easily corroded. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the device of the present invention;

[0016] Figure 2 This is a schematic diagram showing the overall structure and assembly / disassembly of the device of the present invention;

[0017] Figure 3 This is a schematic diagram of the sleeve structure of the device of the present invention;

[0018] Figure 4 This is a schematic diagram of the vibration-damping heating device of the present invention;

[0019] Figure 5 This is a schematic diagram of the conductive structure of the device of the present invention;

[0020] Figure 6 This is a schematic diagram of the vibration reduction structure of the device of the present invention;

[0021] Figure 7 This is a schematic diagram of the fixed magnetic pole disk structure of the device of the present invention;

[0022] Figure 8 This is a schematic diagram of the lifting magnetic pole disk structure of the device of the present invention;

[0023] Figure 9 This is a schematic diagram of the lifting impeller structure of the device of the present invention;

[0024] Figure 10 This is a schematic diagram of the variable magnetic flux generator mechanism of the present invention.

[0025] The components include: 1. Riser; 2. Fixed magnetic pole disc; 3. Sleeve; 4. Lifting magnetic pole disc; 5. Telescopic spring; 6. Auxiliary slide rod; 7. Lifting impeller; 8. Sealing ring; 9. Vibration damping heater; 10. Liquid chamber; 11. Limiting hole; 12. Lifting disc with limiting hole; 13. Lifting disc with limiting groove; 14. Arc-shaped magnetic strip; 15. Disc with limiting hole; 16. Disc with limiting groove; 17. Ring magnet; 18. Fixed shaft; 19. Limiting ring; 20. Bearing; 21. Rotating blade; 22. Heating groove with hole; 23. Sealing cover; 24. Arc-shaped vibration damping plate; 25. Connecting rod; 26. Cross support rod; 27. Heating spring; 28. Resistance wire; 29. ​​Wire; 30. Conductor rod. Detailed Implementation

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

[0027] like Figure 1 As shown, a device that achieves vibration reduction and heating simultaneously through variable magnetic flux power generation consists of two parts: a variable magnetic flux power generation module and a vibration reduction and heating module.

[0028] like Figure 3 As shown, the vibration damping heating module mainly consists of a sleeve 3, a liquid cavity 10, and a vibration damping heater 9. The sleeve 3 is welded from two symmetrical semi-cylindrical structures. The upper and lower parts of the sleeve 3 are sealed by sealing rings 8. The inner diameter of the sleeve 3 is larger than the outer diameter of the riser 1. The sleeve 3 is fitted onto the outside of the riser 1. Two protruding liquid cavities 10 are symmetrically arranged on the inner wall of the sleeve 3. The protrusion height of the liquid cavity 10 is smaller than the gap between the outer diameter of the sleeve 3 and the riser 1. Two limiting holes 11 are opened on the outer side of each liquid cavity 10, and the vibration damping heater 9 is installed in the limiting holes 11.

[0029] like Figure 4 As shown, the vibration damping heater 9 consists of a perforated heating groove 22, a sealing cover 23, an arc-shaped vibration damper, a cross support rod 26, and four heating springs 27. The perforated heating groove 22 is an open cylindrical structure with evenly spaced perforations along its circumference. The outer diameter of the perforated heating groove 22 is equal to the diameter of the limiting hole 11 of the vibration damping heater 9. The perforated heating groove 22 is inserted into the limiting hole 11 into the liquid cavity 10 and fixedly installed on the liquid cavity 10. The sealing cover 23 is installed at the opening of the perforated heating groove 22 to seal it. The sealing cover 23 has a circular hole in its center. Figure 5 As shown, the arc-shaped vibration damper is a T-shaped structure composed of an arc-shaped damping plate 24 and a cylindrical support rod. A conductor rod 30 is installed inside the cylindrical support rod, and the conductor rod 30 is connected to the wire 29 to form a closed loop. One end of the cylindrical support rod is connected to the center of the convex surface of the arc-shaped damping plate 24, and the other end is connected to the cross support rod 26. The center of the cross support rod 26 is a circular hole, and the diameter of the circular hole is larger than the diameter of the cylindrical support rod. The four protruding cuboid structures of the cross support rod 26 have grooves in the middle, and the end faces of the grooves face the convex surface of the arc-shaped damping plate 24. Four connecting rods 25 are evenly connected around the cylindrical support rod passing through the circular hole. The included angle between any two connecting rods 25 is 90°. The free ends of the connecting rods 25 are inserted into the grooves of the cuboids of the cross support rod 26 and are connected to the crossbar at one end of the heating spring 27. The crossbar can move in the grooves of the cuboids of the cross support rod 26 under the action of the connecting rods 25. The four extended cuboid blocks of the cross-shaped support rod 26 are connected to a connecting rod 25, each of which is connected to a heating spring 27. The other end of the heating spring 27 is fixed to the inner wall of the perforated heating groove 22. A resistance wire 28 is embedded in the end of the heating spring 27 connected to the connecting rod 25. The resistance wire 28 is connected to the conductor rod 30 through a wire 29, and the resistance wire 28 can transfer heat to the heating spring 27.

[0030] like Figure 2 As shown, the variable magnetic flux power generation module consists of two fixed magnetic pole disks 2, one lifting magnetic pole disk 4, four auxiliary sliding rods 6, eight telescopic springs 5, and four lifting impellers 7. Figure 7 As shown, the fixed magnetic pole disk 2 is a ring-shaped structure assembled from a disk 15 with limiting holes, an annular magnet 17, and a disk 16 with limiting grooves. The inner diameter of the fixed magnetic pole disk 2 is equal to the outer diameter of the riser 1. The upper and lower fixed magnetic pole disks 2 are fitted and fixed to the outer wall of the riser 1 at a height interval of one sleeve 3. The disk 15 with limiting holes has eight circular holes evenly distributed circumferentially, and the diameter of these holes is equal to the diameter of the attached sliding rod 6. Figure 8 As shown, the diameters of the inner and outer rings of the annular groove of the disc 16 with the limiting groove are equal to the diameters of the inner and outer rings of the annular magnet 17, respectively. The depth of the annular groove is equal to the thickness of the annular magnet 17, and the annular magnet 17 is embedded within the annular groove of the disc 16 with the limiting groove. Figure 2 As shown, the two ends of the telescopic spring 5 are connected to fixed rods, the diameter of which is equal to the diameter of the auxiliary slide rod 6. The upper fixed magnetic pole disk 2 with a limiting hole disk 15 is on the lower side, and the lower fixed magnetic pole disk 2 with a limiting hole disk 15 is on the upper side. The circular holes of the upper and lower fixed magnetic pole disks 2 with limiting holes disks 15 are axially aligned. The auxiliary slide rod 6 and the fixed rod of the telescopic spring 5 are inserted into the circular holes of the disks with limiting holes disks 15 for fixation.

[0031] like Figure 8As shown, the lifting magnetic pole disk 4 is also a ring-shaped structure, assembled from two lifting disks 12 with limiting holes, one lifting disk 13 with limiting grooves, and four arc-shaped magnetic strips 14. The inner diameter of the lifting magnetic pole disk 4 is larger than the outer diameter of the sleeve 3. The lifting magnetic pole disk 4 is arranged between the upper and lower fixed magnetic pole disks 2. The lifting disk 12 with limiting holes has four large circular holes of the same diameter evenly distributed around its circumference. The height of the large circular holes is equal to the thickness of the lifting disk 12 with limiting holes, and the diameter of the large circular holes is larger than the diameter of the auxiliary slide rod 6. A small circular hole is formed between every two large circular holes around the lifting disk 12 with limiting holes. The diameter of the small circular hole is equal to the diameter of the fixing rod at the end of the telescopic spring 5, and the height of the small circular hole is equal to half the thickness of the lifting disk 12 with limiting holes. The lifting disc 13 with limiting grooves also has four identical large circular holes evenly distributed around its circumference. Between every two large circular holes are four identical arc-shaped grooves, with the arc-shaped grooves facing upwards. The curvature and depth of the arc-shaped grooves are the same as the curvature and thickness of the arc-shaped magnetic strip 14. The arc-shaped magnetic strip 14 is embedded within the arc-shaped groove of the lifting disc 13 with limiting grooves. Two lifting discs 12 with limiting holes are respectively installed on the upper and lower sides of the lifting disc 13 with limiting grooves. The small circular holes of the lifting disc 12 with limiting holes on the upper side of the lifting disc 13 with limiting grooves open upwards, while the small circular holes of the lifting disc 12 with limiting holes on the lower side of the lifting disc 13 with limiting grooves open downwards. The centers of the large circular holes of the lifting discs 12 with limiting holes and the lifting disc 13 with limiting grooves are on the same vertical line.

[0032] like Figure 9 As shown, the lifting impeller 7 is mounted on the upper and lower sides of the lifting magnetic pole disk 4 via a fixed shaft 18. The fixed shaft 18 is a stepped cylindrical structure with a larger diameter in the middle and smaller diameters at both ends. The outer diameter of the middle part of the cylinder is equal to the inner diameter of the large circular hole on the lifting disk 12 with limiting holes. The height of the middle part of the cylinder is equal to the depth of the large circular hole on the lifting magnetic pole disk 4. The inner diameter of the middle part of the cylinder is equal to the inner diameter of the smaller diameter cylinders at both ends and is greater than the diameter of the auxiliary slide rod 6. The outer diameter of the smaller diameter cylinders at both ends is equal to the inner diameter of the bearing inner ring, and the height of the smaller diameter cylinders at both ends is greater than the height of the bearing 20. The fixed shaft 18 is fixed in the large circular hole of the lifting magnetic pole disk 4 by two upper and lower limiting rings 19. The two bearings 20 are respectively mounted on the outer walls of the smaller diameter cylinders at both ends, with a gap between the bearings 20 and the limiting rings 19. The rotating blades 21 are fitted onto the outer rings of the bearings, and the tilt angles of the upper and lower rotating blades 21 are the same to generate lift in the same direction.

[0033] like Figure 10As shown, the device for simultaneously achieving vibration reduction and heating by generating electricity using variable magnetic flux provides a device and method for simultaneously achieving vibration reduction and heating by generating electricity using variable magnetic flux. The ocean current impacts the rotating lifting impeller 7, causing it to rotate. The lift generated by the rotation of the lifting impeller 7 drives the lifting magnetic pole disk 4 upward, compressing the upper telescopic spring 5 and stretching the lower telescopic spring 5. The upper magnetic pole of the lifting magnetic pole disk 4 has the same magnetism as the upper fixed magnetic pole disk 2. When the lifting magnetic pole disk 4 moves upward to a certain height, under the action of the telescopic spring 5 and the magnetic pole repulsion, the lifting magnetic pole disk 4 turns downward. When the lifting magnetic pole disk 4 moves downward to a certain position, the lower telescopic spring 5 begins to compress, and the upper telescopic spring 5 begins to stretch. Similarly, the lower magnetic pole of the lifting magnetic pole disk 4 has the same magnetism as the lower fixed magnetic pole disk 2. After the lifting magnetic pole disk 4 moves downward a certain distance, it turns upward again under the action of the force of the telescopic spring 5, the magnetic pole repulsion, and the lift of the lifting impeller 7. Therefore, under the impact of the ocean current, the lifting magnetic pole disk 4 moves up and down reciprocally. On the one hand, when the ocean current passes around the riser 1, the auxiliary sliding rod 6 and the telescopic spring 5 around the riser 1 can disrupt the flow boundary layer around the riser 1. At the same time, the rotation of the lifting impeller 7 on the auxiliary sliding rod 6 further disrupts the flow boundary layer. On the other hand, the lifting magnetic pole disk 4 moves up and down reciprocally under the interaction of the lift of the lifting impeller 7, the force of the telescopic spring 5, and the magnetic force, changing the flow direction around the flow in space and further disrupting the flow boundary layer and the vortex at the tail of the riser 1. The change in position of the lifting magnetic pole disk 4 and the fixed magnetic pole disk 2 causes a change in the magnetic flux between the magnets in the lifting magnetic pole disk 4 and the fixed magnetic pole disk 2. This, in turn, changes the magnetic flux in the closed loop formed by the conductor rod 30 and the wire 29 in the cylindrical support rod of the arc-shaped vibration damper, thereby generating a current. When the current passes through the resistance wire 28 in the heating spring 27, the resistance wire 28 generates heat and transfers heat to the heating spring 27. The heating spring 27 heats the surrounding liquid, and the heated liquid flows out from the opening of the perforated heating tank 22, exchanging heat with the liquid in the liquid chamber 10, thus raising the temperature of the liquid in the entire liquid chamber 10 and keeping the riser 1 warm. When the riser 1 vibrates, the vibration is transmitted to the arc-shaped vibration damper. Under the action of the arc-shaped vibration damper and the heating spring 27, the vibration of the riser 1 can be buffered and weakened. In addition, the arc-shaped damper generates vibration, causing the cylindrical support rod to reciprocate through the circular hole in the center of the cross support rod 26. Driven by the connecting rod 25, the heating spring 27 undergoes compression and stretching motion, which stirs the liquid in the perforated heating tank 22, thereby enhancing heat transfer and improving the insulation effect of the liquid in the liquid chamber 10 on the riser 1.

[0034] Example:

[0035] When installing the device of this invention, first assemble the vibration damping heater 9. Fix one end of each of the four heating springs 27 without crossbars to the inner wall of the perforated heating groove 22, making the included angle between any two heating springs 27 90°. Insert the crossbars at one end of each of the four heating springs 27 into the grooves in the middle of the four cuboid blocks extending from the cross support rod 26. Insert the cylindrical support rod of the arc-shaped vibration damper into the perforated heating groove 22 and through the circular hole in the center of the cross support rod 26. Adjust the position of the cylindrical support rod of the arc-shaped vibration damper. Hinge the four connecting rods 25 around the cylindrical support, making the included angle between any two connecting rods 25 90°. Then connect the free end of the connecting rod 25 to the crossbar in the groove of the cuboid block of the cross support rod 26. Pass the center of the sealing cover 23 through the cylindrical support rod and fix it to the opening of the perforated heating groove 22. Finally, fix the center of the convex surface of the arc-shaped vibration damping plate 24 to the end of the cylindrical support rod extending out of the perforated heating groove 22. A protruding liquid cavity 10 is fixedly installed on the inner wall of each half sleeve 3, and four vibration damping heaters 9 are inserted into the limiting holes 11 of the liquid cavity 10 and fixed. Then, the two semi-circular sleeves are fitted onto the outside of the riser 1 from both sides, and the upper and lower sealing rings 8 are sealed on the sleeves 3.

[0036] Next, the annular magnet 17 is embedded into the disc 16 with the limiting groove, and the disc 15 with the limiting hole is fixedly installed on the upper part of the disc 16 with the limiting groove, thus assembling a fixed magnetic pole disc 2. One fixed magnetic pole disc 2 is fixed on the riser 1, and the position of the fixed magnetic pole disc 2 is adjusted so that the upper side of the disc 15 with the limiting hole abuts against the lower side of the sealing ring 8 on the lower side of the sleeve 3. Then, four auxiliary sliding rods 6 are inserted into the round holes of the disc 15 with the limiting hole, so that the included angle between every two auxiliary sliding rods 6 is 90°. The fixing rod at the end of the telescopic spring 5 is inserted into the round holes of the remaining discs 15 with limiting holes and fixed.

[0037] Then, four arc-shaped magnetic strips 14 are respectively embedded into the lifting disk 13 with limiting grooves. Two lifting disks 12 with limiting holes are fixed on the upper and lower sides of the lifting disk 13 with limiting grooves, respectively. The small holes of the lifting disks 12 with limiting holes on the upper side of the lifting disk 13 with limiting grooves face upwards, and the small holes of the lifting disks 12 with limiting holes on the lower side of the lifting disk 13 with limiting grooves face downwards. The lifting disks 12 with limiting holes are adjusted so that the center of the large hole of the lifting disk 12 with limiting holes is on the same vertical line as the center of the large hole of the lifting disk 13 with limiting grooves. Then, the fixing shaft 18 is inserted into the large hole of the lifting magnetic pole disk 4 and fixed with the limiting ring 19. The bearing 20 is fixed on the smaller diameter cylinders at both ends of the fixing shaft 18, and then the rotating blade 21 is mounted on the bearing 20. The fixing rod at the end of the telescopic spring 5 is fixed in the small round holes of the upper and lower lifting magnetic pole disk 12 with limit holes.

[0038] Then, the lifting magnetic pole disc 4 is fitted onto the outside of the sleeve 3, so that the four auxiliary sliding rods 6 pass through the large circular hole of the lifting magnetic pole disc 4 respectively, and the two ends of the telescopic spring 5 are fixed to the fixed magnetic pole disc 2 and the upper and lower fixed rods of the lifting magnetic pole disc 4 respectively.

[0039] Finally, fix the upper fixed magnetic pole disk 2 onto the riser 1, so that the opening of the disk 15 with the limiting hole faces downward and the lower side of the disk 15 with the limiting hole abuts against the upper side of the sealing ring 8 on the upper side of the sleeve 3. Insert the fixing rods of the four springs into the round holes of the disk 15 with the limiting hole respectively, and fix the telescopic spring 5 between every two opposite fixing rods of the lifting magnetic pole disk 4 and the fixed magnetic pole disk 2.

[0040] After installation, the riser 1 equipped with the device of this invention is placed in a marine environment for use. The ocean current impacts the rotating lifting impeller 7, causing it to rotate. The lift generated by the rotating impeller 7 drives the lifting magnetic pole disk 4 upwards, compressing the upper telescopic spring 5 and stretching the lower telescopic spring 5. The upper magnetic pole of the lifting disk has the same magnetism as the upper fixed magnetic pole disk 2. When the lifting magnetic pole disk 4 moves upwards to a certain height, under the action of the telescopic spring 5 and the magnetic pole repulsion, it turns downwards. When the lifting magnetic pole disk 4 moves downwards to a certain position, the lower telescopic spring 5 begins to compress, and the upper telescopic spring 5 begins to stretch. Similarly, the lower magnetic pole of the lifting disk has the same magnetism as the lower fixed magnetic pole disk 2. After the lifting magnetic pole disk 4 moves downwards a certain distance, under the action of the telescopic spring 5, the magnetic pole repulsion, and the lift of the lifting impeller 7, the lifting magnetic pole disk 4 turns upwards again. Therefore, under the impact of the ocean current, the lifting magnetic pole disk 4 reciprocates up and down. On the one hand, when the ocean current flows around the riser 1, the auxiliary sliding rod 6 and the telescopic spring 5 around the riser 1 can disrupt the flow boundary layer around the riser 1. At the same time, the lifting impeller 7 on the auxiliary sliding rod 6 rotates, further disrupting the flow boundary layer. On the other hand, the lifting magnetic pole disk 4 reciprocates up and down under the interaction of the lift force of the lifting impeller 7, the force of the telescopic spring 5, and the magnetic force, changing the flow direction around the riser in space, further disrupting the flow boundary layer and the vortex at the tail of the riser 1. Due to the change in the position of the lifting magnetic pole disk 4 and the fixed magnetic pole disk 2, the magnetic flux between the magnets in the lifting magnetic pole disk 4 and the fixed magnetic pole disk 2 changes, thereby changing the magnetic flux in the closed loop formed by the conductor rod 30 and the wire 29 in the cylindrical support rod of the arc-shaped vibration damper, and thus generating current. When current passes through the resistance wire 28 inside the heating spring 27, the resistance wire 28 generates heat and transfers it to the heating spring 27. The heating spring 27 heats the surrounding liquid, and the heated liquid flows out from the opening of the perforated heating tank 22, exchanging heat with the liquid in the liquid chamber 10, thus raising the temperature of the liquid in the entire liquid chamber 10 and insulating the riser 1. When the riser 1 vibrates, the vibration is transmitted to the arc-shaped vibration damper. Under the action of the arc-shaped vibration damper and the heating spring 27, the vibration of the riser 1 can be buffered and weakened. In addition, the vibration generated by the arc-shaped vibration damper causes the cylindrical support rod to reciprocate through the circular hole in the center of the cross support rod 26. Driven by the connecting rod 25, the heating spring 27 undergoes compression and stretching motion, stirring the liquid in the perforated heating tank 22, thereby enhancing heat transfer and improving the insulation effect of the liquid in the liquid chamber 10 on the riser 1.

Claims

1. A device for simultaneously achieving vibration damping and heating by variable magnetic flux power generation, comprising a variable magnetic flux power generation module and a vibration damping and heating module; the vibration damping and heating module mainly comprises a sleeve (3), a liquid cavity (10) and a vibration damping and heating device (9); the sleeve (3) is welded by two symmetrical half-cylinder structures, the upper and lower parts of the sleeve (3) are sealed by sealing rings (8), the inner diameter of the sleeve (3) is larger than the outer diameter of the riser (1), the sleeve (3) is sleeved on the riser (1), two protruding liquid cavities (10) are symmetrically arranged on the inner wall of the sleeve (3), the protruding height of the liquid cavity (10) is smaller than the gap between the sleeve (3) and the outer diameter of the riser (1), two limiting holes (11) are formed on the outer side of each liquid cavity (10), and the vibration damping and heating device (9) is installed in the limiting hole (11); the vibration damping and heating device (9) comprises a perforated heating groove (22), a sealing cover (23), an arc-shaped damper, a cross-shaped supporting rod (26) and four heating springs (27); the perforated heating groove (22) is an open cylinder structure with uniformly distributed holes on the wall surface in the circumferential direction, the outer diameter of the perforated heating groove (22) is equal to the diameter of the limiting hole (11) of the vibration damping and heating device (9), the perforated heating groove (22) is inserted into the limiting hole (11) to the inside of the liquid cavity (10) and is fixedly installed on the liquid cavity (10), the sealing cover (23) is installed on the opening of the perforated heating groove (22) to seal the opening, and a circular hole is formed in the center of the sealing cover (23); the arc-shaped damper is a T-shaped structure composed of an arc-shaped damping sheet (24) and a cylindrical supporting rod, a conductor rod (30) is installed in the cylindrical supporting rod, the conductor rod (30) is connected with a wire (29) to form a closed loop, one end of the cylindrical supporting rod is connected with the center of the convex surface of the arc-shaped damping sheet (24), and the other end is connected with the cross-shaped supporting rod (26); the center of the cross-shaped supporting rod (26) is a circular hole, and the diameter of the circular hole is larger than the diameter of the cylindrical supporting rod, grooves are formed in the middle of the four protruding cuboid block structures of the cross-shaped supporting rod (26), and the end faces of the grooves face the convex surface of the arc-shaped damping sheet (24); four connecting rods (25) are uniformly connected in the circumferential direction of the cylindrical supporting rod passing through one end of the circular hole, the included angle between every two connecting rods (25) is 90°, the free end of the connecting rod (25) is inserted into the groove of the cuboid block of the cross-shaped supporting rod (26), and the free end is connected with the cross rod of one end of the heating spring (27); the connecting rod (25) connected with the four protruding cuboid blocks of the cross-shaped supporting rod (26) is connected with one heating spring (27); the other end of the heating spring (27) is fixed on the inner wall of the perforated heating groove (22), an electric resistance wire (28) is embedded in the end of the heating spring (27) connected with the connecting rod (25), the electric resistance wire (28) is connected with the conductor rod (30) through the wire (29), and the electric resistance wire (28) can transfer heat to the heating spring (27); the variable magnetic flux power generation module comprises two fixed magnetic pole discs (2), one lifting magnetic pole disc (4), four auxiliary sliding rods (6), eight extension springs (5) and four lifting impellers (7).The fixed magnetic pole disc (2) is a circular ring structure assembled by a disc (15) with limiting holes, a ring-shaped magnet (17) and a disc (16) with limiting slots; the disc (15) with limiting holes of the upper fixed magnetic pole disc (2) is at the lower side, the disc (15) with limiting holes of the lower fixed magnetic pole disc (2) is at the upper side, and the circular holes of the discs (15) with limiting holes of the upper and lower fixed magnetic pole discs (2) are axially aligned; the fixed rod of the auxiliary slide rod (6) and the extension spring (5) is inserted into the circular hole of the disc (15) with limiting holes for fixation; the lifting magnetic pole disc (4) is also a circular ring structure, which is assembled by two lifting discs (12) with limiting holes, a lifting disc (13) with limiting slots and four arc-shaped magnetic strips (14); the two lifting discs (12) with limiting holes are respectively installed on the upper and lower sides of the lifting disc (13) with limiting slots, the small circular holes of the lifting disc (12) with limiting holes on the upper side of the lifting disc (13) with limiting slots are upwardly opened, the small circular holes of the lifting disc (12) with limiting holes on the lower side of the lifting disc (13) with limiting slots are downwardly opened, and the centers of the large circular holes of the lifting disc (12) with limiting holes and the lifting disc (13) with limiting slots are on the same vertical line; the lifting impeller (7) is installed on the upper and lower sides of the lifting magnetic pole disc (4) through a fixed shaft (18); the fixed shaft (18) is fixed in the large circular hole of the lifting magnetic pole disc (4) through upper and lower limiting rings (19), two bearings (20) are respectively installed on the outer walls of the small diameter cylinders at two ends, and a gap is left between the bearing (20) and the limiting ring (19); characterized in that: The inner circle diameter of the fixed magnetic pole disc (2) is equal to the outer diameter of the riser (1); the upper and lower fixed magnetic pole discs (2) are fixed on the outer wall of the riser (1) by being sleeved with a height interval of a sleeve (3); the disc (15) with limiting holes is uniformly provided with eight holes along the circumference, the diameter of the hole is equal to the diameter of the auxiliary slide rod (6); the inner and outer circle diameters of the annular groove of the disc (16) with limiting grooves are equal to the inner and outer circle diameters of the annular magnet (17), the depth of the annular groove is equal to the thickness of the annular magnet (17), and the annular magnet (17) is embedded in the annular groove of the disc (16) with limiting grooves; the telescopic spring (5) is connected with a fixed rod at both ends, the diameter of the fixed rod is equal to the diameter of the auxiliary slide rod (6); the inner circle diameter of the lifting magnetic pole disc (4) is greater than the outer diameter of the sleeve (3); the lifting magnetic pole disc (4) is arranged between the upper and lower fixed magnetic pole discs (2); the lifting disc (12) with limiting holes is uniformly provided with four large holes with the same diameter along the circumference, the height of the large hole is equal to the thickness of the lifting disc (12) with limiting holes, and the diameter of the large hole is greater than the diameter of the auxiliary slide rod (6); a small hole is provided in the middle of every two large holes along the circumference of the lifting disc (12) with limiting holes, the diameter of the small hole is equal to the diameter of the fixed rod at the end of the telescopic spring (5), and the height of the small hole is equal to 1 / 2 of the thickness of the lifting disc (12) with limiting holes; the lifting disc (13) with limiting grooves is also uniformly provided with four large holes with the same diameter along the circumference, four arc-shaped grooves are provided between every two large holes, the arc-shaped grooves face upwards, the curvature and depth of the arc-shaped grooves are the same as the curvature and thickness of the arc-shaped magnetic strip (14), and the arc-shaped magnetic strip (14) is embedded in the arc-shaped groove of the lifting disc (13) with limiting grooves; the fixed shaft (18) is a stepped cylindrical structure with a large diameter in the middle and small diameters at both ends, the outer diameter of the middle part of the cylinder is equal to the inner diameter of the large hole of the lifting disc (12) with limiting holes, the height of the middle part of the cylinder is equal to the depth of the large hole of the lifting magnetic pole disc (4), the inner diameter of the middle part of the cylinder is equal to the inner diameter of the small diameter cylinder at both ends, and is greater than the diameter of the auxiliary slide rod (6); the outer diameter of the small diameter cylinder at both ends is equal to the inner diameter of the bearing, and the height of the small diameter cylinder at both ends is greater than the height of the bearing (20).

2. A method for simultaneously achieving vibration damping and heating by variable magnetic flux power generation using the device for simultaneously achieving vibration damping and heating by variable magnetic flux power generation according to claim 1, characterized in that: The current impacts the lifting impeller (7) to rotate, and the lifting force generated by the rotation of the lifting impeller (7) drives the lifting magnetic pole disc (4) to move upward, and the upper telescopic spring (5) is compressed and the lower telescopic spring (5) is stretched; the upper magnetic pole of the lifting magnetic pole disc (4) has the same magnetism as the magnetic pole of the upper fixed magnetic pole disc (2), when the lifting magnetic pole disc (4) moves upward to a certain height, under the action of the force of the telescopic spring (5) and the magnetic repulsion, the lifting magnetic pole disc (4) turns to move downward, when the lifting magnetic pole disc (4) moves downward to a certain position, the lower telescopic spring (5) starts to compress and the upper telescopic spring (5) starts to stretch; similarly, the lower magnetic pole of the lifting magnetic pole disc (4) has the same magnetism as the magnetic pole of the lower fixed magnetic pole disc (2), when the lifting magnetic pole disc (4) moves downward for a distance, under the action of the force of the telescopic spring (5), the magnetic repulsion and the lifting force of the lifting impeller (7), the lifting magnetic pole disc (4) turns to move upward again; thus, under the impact of the current, the lifting magnetic pole disc (4) reciprocates upward and downward; on the one hand, when the current flows around the riser (1), the attached slide rod (6) and the telescopic spring (5) around the riser (1) can destroy the boundary layer around the riser (1), at the same time, the lifting impeller (7) on the attached slide rod (6) rotates, further destroying the boundary layer; on the other hand, the lifting magnetic pole disc (4) reciprocates upward and downward under the interaction of the lifting force of the lifting impeller (7), the force of the telescopic spring (5) and the magnetic force, changes the flow direction of the space around the flow, further destroys the boundary layer around the flow and the vortex at the tail of the riser (1); due to the change of the position of the lifting magnetic pole disc (4) and the fixed magnetic pole disc (2), the magnetic flux between the magnets in the lifting magnetic pole disc (4) and the fixed magnetic pole disc (2) changes, thereby the magnetic flux in the closed loop formed by the conductor rod (30) and the wire (29) in the cylindrical support rod of the arc damper changes, and then an electric current is generated; when the electric current passes through the resistance wire (28) in the heating spring (27), the resistance wire (28) generates heat and transmits heat to the heating spring (27), the heating spring (27) heats the surrounding liquid, the heated liquid flows out of the opening of the slotted heating groove (22) and exchanges heat with the liquid in the liquid cavity (10), so that the liquid in the whole liquid cavity (10) is heated, thereby the riser (1) is kept warm; when the riser (1) vibrates, the vibration is transmitted to the arc damper, under the action of the arc damper and the heating spring (27), the vibration of the riser 1 can be buffered and weakened; in addition, the arc damper generates vibration, the cylindrical support rod reciprocates through the circular hole in the center of the cross support rod (26), under the driving of the connecting rod (25), the heating spring (27) is squeezed and stretched, and the liquid in the slotted heating groove (22) is stirred, thereby the heat transfer is enhanced, and the heat preservation effect of the liquid in the liquid cavity (10) on the riser (1) is enhanced.

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