Vortex-induced vibration-based electric energy conversion device and method

Abstract

The invention discloses an electric energy conversion device and method based on vortex-induced vibration, a first sleeve and a second sleeve are respectively arranged on two sides of an energy harvesting support of the electric energy conversion device, and a first optical axis and a second optical axis respectively corresponding to the first sleeve and the second sleeve are arranged on the inner side of a support assembly; the first optical axis and the second optical axis correspondingly penetrate through the first sleeve and the second sleeve to enable the energy harvesting support to be slidably connected to the support assembly, and an elastic assembly is arranged between the support assembly and the energy harvesting support to enable the energy harvesting support to be elastically connected with the support assembly. An energy harvesting column is transversely arranged at the bottom of the energy harvesting support, the top of the energy harvesting support is connected with the input end of the transmission conversion mechanism through a double-face rack, and the micro generator is in transmission connection with the output end of the transmission conversion mechanism. The structure is compact and reliable, installation and maintenance are convenient, and the overall structure adapts to the marine environment. In addition, the vortex-induced vibration power generation device can be installed in fluid environments such as oceans and rivers to generate power through vortex-induced vibration, and clean electric energy is provided for coastal areas and remote water areas.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy conversion, and in particular relates to an electric energy conversion device and method based on vortex-induced vibration. Background Art

[0002] As global energy demand grows, the massive consumption of traditional fossil fuels has led to serious environmental pollution and energy shortages. Oceans cover 70% of the Earth's surface and contain abundant renewable energy resources such as wave and tidal energy. Harnessing ocean energy for power generation has become a key approach to addressing the energy crisis. Existing ocean energy generation technologies, such as wave and tidal power generation, have achieved some success, but they still face challenges such as low conversion efficiency, complex structures, and limited applicability.

[0003] Vortex-induced vibration (VIV) refers to the phenomenon in which a non-streamlined object, under constant flow velocity, alternately generates vortices on both sides, inducing periodic vibration. Prior research on VIV energy utilization is limited, and there is a lack of efficient energy conversion mechanisms to convert vibrational energy into electrical energy. Therefore, there is a need for a compact VIV-based power conversion device and method that can utilize fluid VIV for electrical energy conversion. Summary of the Invention

[0004] The object of the present invention is to provide a vortex-induced vibration-based electric energy conversion device and method which has a compact structure and can utilize fluid vortex-induced vibration to convert electric energy.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An electric energy conversion device based on vortex-induced vibration includes a bracket assembly, an energy-capturing bracket, a transmission conversion mechanism, and a micro-generator; a first sleeve and a second sleeve are respectively provided on both sides of the energy-capturing bracket, and a first optical axis and a second optical axis corresponding to the first sleeve and the second sleeve are respectively provided on the inner side of the bracket assembly. The first optical axis and the second optical axis are respectively correspondingly inserted into the first sleeve and the second sleeve so that the energy-capturing bracket is slidably connected to the bracket assembly, and an elastic component is provided between the bracket assembly and the energy-capturing bracket so that the energy-capturing bracket is elastically connected to the bracket assembly; An energy-capturing column is arranged horizontally at the bottom of the energy-capturing bracket, and the top of the energy-capturing bracket is connected to the input end of the transmission conversion mechanism through a double-sided rack, and the micro-generator is connected to the output end of the transmission conversion mechanism through transmission; the energy-capturing column generates periodic vibrations in the fluid and drives the energy-capturing bracket to move back and forth up and down, and the reciprocating up and down movement of the energy-capturing bracket drives the micro-generator to generate electricity through the transmission conversion mechanism.

[0006] The bracket assembly includes an inner bracket arranged vertically and an outer bracket arranged horizontally; The outer bracket includes a front crossbar, a rear crossbar, a left crossbar and a right crossbar, the front and rear ends of the left crossbar are respectively connected to the left end of the front crossbar and the left end of the rear crossbar, and the front and rear ends of the right crossbar are respectively connected to the right end of the front crossbar and the right end of the rear crossbar; The inner bracket includes a left vertical rod, a right vertical rod and a support connecting rod, the left end of the support connecting rod is connected to the right side of the left vertical rod, the right end of the support connecting rod is connected to the left side of the right vertical rod, a first shaft seat and a second shaft seat are provided on the right side of the left vertical rod, a first optical axis is provided on the support connecting rod and is arranged between the first shaft seat and the second shaft seat, the top end of the first optical axis is connected to the first shaft seat, the bottom end of the first optical axis is connected to the second shaft seat, and the first shaft seat and the second shaft seat are both arranged below the support connecting rod; A third axis seat and a fourth axis seat are arranged on the left side surface of the right vertical rod, the second optical axis is arranged between the third axis seat and the fourth axis seat, the top end of the second optical axis is connected to the third axis seat, and the bottom end of the second optical axis is connected to the fourth axis seat, and the upper and lower positions of the third axis seat and the fourth axis seat correspond to the first axis seat and the second axis seat respectively.

[0007] The energy capture bracket includes a left energy capture vertical rod, a right energy capture vertical rod, a first energy capture cross rod and a second energy capture cross rod. The left ends of the first energy capture cross rod and the second energy capture cross rod are connected to the right side of the left energy capture vertical rod, and the right ends of the first energy capture cross rod and the second energy capture cross rod are connected to the left side of the right energy capture vertical rod. The first energy capture cross rod is arranged above the second energy capture cross rod, and the energy capture column is arranged horizontally between the left energy capture vertical rod and the right energy capture vertical rod. The left end of the energy capture column is connected to the bottom end of the left energy capture vertical rod, and the right end of the energy capture column is connected to the bottom end of the right energy capture vertical rod.

[0008] The elastic component includes a first left connecting plate, a first right connecting plate, a first spring, a second left connecting plate, a second right connecting plate, a second spring, a third left connecting plate, a third right connecting plate, a third spring, a fourth left connecting plate, a fourth right connecting plate and a fourth spring; the first left connecting plate and the second left connecting plate are arranged on the right side surface of the left vertical rod, the first left connecting plate is arranged above the first axle seat, the second left connecting plate is arranged below the second axle seat, the first right connecting plate and the second right connecting plate are arranged on the left side surface of the left energy capturing vertical rod, the first right connecting plate is arranged above the first sleeve, the second right connecting plate is arranged below the first sleeve, the top end of the first spring is connected to the first left connecting plate, the bottom end of the first spring is connected to the first right connecting plate, the top end of the second spring is connected to the second right connecting plate, and the bottom end of the second spring is connected to the first right connecting plate; The third left connecting plate and the fourth left connecting plate are arranged on the right side surface of the right energy capturing vertical rod, and the upper and lower positions of the third left connecting plate and the fourth left connecting plate correspond to the first right connecting plate and the second right connecting plate respectively. The third right connecting plate and the fourth right connecting plate are arranged on the left side surface of the right vertical rod, and the upper and lower positions of the third right connecting plate and the fourth right connecting plate correspond to the first left connecting plate and the second left connecting plate respectively. The top end of the third spring is connected to the third right connecting plate, the bottom end of the third spring is connected to the third left connecting plate, the top end of the fourth spring is connected to the fourth left connecting plate, and the top end of the fourth spring is connected to the fourth right connecting plate.

[0009] The transmission conversion mechanism includes a gear frame, a first input gear, a second input gear, a first transmission shaft, a second transmission shaft, a first output gear, a second output gear, a first one-way bearing, a second one-way bearing, a reduction gear, a transmission gear and a reduction gear output shaft; the gear frame is a rectangular frame and is arranged on the upper surface of the supporting connecting rod, the first input gear and the second input gear are mounted on the front side of the gear frame through the front mounting seat, the first output gear, the second output gear, the reduction gear and the transmission gear are all mounted on the rear side of the gear frame through the rear mounting seat, the first input gear is engaged with the double-sided rack and is located on the left side of the double-sided rack, the second input gear is engaged with the double-sided rack and is located on the left side of the double-sided rack On the right side of the face rack, the first input gear is installed at the rear end of the first transmission shaft, the first output gear is installed at the front end of the first transmission shaft through the first one-way bearing, the second input gear is installed at the rear end of the second transmission shaft, and the second output gear is installed at the front end of the second transmission shaft through the second one-way bearing. The first output gear and the second output gear are both engaged with the reduction gear. The first output gear is located at the lower left of the reduction gear, and the second output gear is located at the lower right of the reduction gear. The transmission gear is installed at the rear end of the reduction gear transmission shaft, the transmission gear is engaged with the reduction gear and is located above the reduction gear. The input end of the micro generator is connected to the front end of the reduction gear transmission shaft.

[0010] The bottom end of the double-sided rack is connected to the first energy-capturing crossbar through a connecting seat.

[0011] The electric energy conversion method based on vortex-induced vibration is implemented based on the above-mentioned electric energy conversion device and includes the following steps: The electric energy conversion device is installed in a corresponding fluid environment through an outer bracket and an inner bracket. The energy-capturing column generates periodic vibrations in the fluid with a constant flow rate, thereby driving the energy-capturing bracket to perform reciprocating linear motion in the vertical direction. Under normal conditions, the first spring, the second spring, the third spring and the fourth spring are in a relaxed state. When the energy-capturing bracket moves upward, the first spring and the third spring are compressed, and the second spring and the fourth spring are stretched. When the energy-capturing bracket moves downward, the first spring and the third spring are stretched, and the second spring and the fourth spring are compressed. During the reciprocating linear motion of the energy-capturing bracket in the vertical direction, the double-sided rack moves up and down with the energy-capturing bracket, thereby driving the first input gear and the second input gear of the double-sided rack to rotate reciprocatingly. The reciprocating rotation of the first input gear and the second input gear drives the first output gear and the second output gear to rotate through the first transmission shaft and the second transmission shaft. Since the first output gear and the second output gear are respectively installed on the first transmission shaft and the second transmission shaft through the first one-way bearing and the second one-way bearing, the first output gear and the second output gear rotate unidirectionally, thereby driving the reduction gear to rotate, and finally driving the micro-generator to generate electricity.

[0012] The present application has high energy conversion efficiency. Through the meshing design of the double-sided rack and gear, the two strokes of the reciprocating motion are fully utilized to reduce energy loss. The use of one-way bearings ensures the consistency of the rotation direction and improves the transmission efficiency. In addition, the present application has a compact and reliable structure, and each component adopts a standardized design. The gear rack transmission process is mature, easy to install and maintain, and the overall structure is adapted to the marine environment. Furthermore, the present application can be installed in fluid environments such as oceans and rivers to generate electricity using vortex-induced vibration, providing clean electricity for coastal areas and remote waters, and alleviating power supply pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the planar structure of the electric energy conversion device of the present invention.

[0014] Figure 2 for Figure 1 Enlarged view of part A in .

[0015] Figure 3 for Figure 1 Enlarged view of part B in .

[0016] Figure 4 for Figure 1 Enlarged view of part C in .

[0017] Figure 5 for Figure 1 Enlarged view of part D in .

[0018] Figure 6 It is a side view of the electric energy conversion device of the present invention.

[0019] Figure 7 It is a top view of the electric energy conversion device of the present invention.

[0020] Figure 8 It is a schematic diagram of the planar structure of the transmission conversion mechanism of the present invention.

[0021] Figure 9 It is a cross-sectional view of the transmission conversion mechanism of the present invention. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are further described below with reference to the accompanying drawings.

[0023] Example 1 like Figure 1-9 As shown, the electric energy conversion device based on vortex-induced vibration includes a bracket assembly 1, an energy-capturing bracket 2, a transmission conversion mechanism 3 and a micro-generator; a first sleeve 4 and a second sleeve 5 are respectively provided on both sides of the energy-capturing bracket 2, and a first optical axis 6 and a second optical axis 7 corresponding to the first sleeve 4 and the second sleeve 5 are respectively provided on the inner side of the bracket assembly 1. The first optical axis 6 and the second optical axis 7 are respectively correspondingly inserted into the first sleeve 4 and the second sleeve 5 so that the energy-capturing bracket 2 is slidably connected to the bracket assembly 1, and an elastic component is provided between the bracket assembly 1 and the energy-capturing bracket 2 so that the energy-capturing bracket 2 is elastically connected to the bracket assembly 1; An energy capture column 8 is laterally arranged at the bottom of the energy capture bracket 2. The top of the energy capture bracket 2 is connected to the input end of the transmission conversion mechanism 3 through a double-sided rack 26, and the micro-generator is connected to the output end of the transmission conversion mechanism 3 through transmission. The energy capture column 8 generates periodic vibrations in the fluid and drives the energy capture bracket 2 to move back and forth up and down. The reciprocating up and down movement of the energy capture bracket 2 drives the micro-generator to generate electricity through the transmission conversion mechanism 3.

[0024] The bracket assembly 1 includes an inner bracket 9 arranged vertically and an outer bracket 10 arranged horizontally; the outer bracket 10 includes a front cross bar 11, a rear cross bar 12, a left cross bar 13 and a right cross bar 14, the front and rear ends of the left cross bar 13 are respectively connected to the left end of the front cross bar 11 and the left end of the rear cross bar 12, and the front and rear ends of the right cross bar 14 are respectively connected to the right end of the front cross bar 11 and the right end of the rear cross bar 12; the outer bracket 10 is welded with a 40×40mm square tube, connected to the inner bracket 9 by M10 bolts, and fixed to the platform.

[0025] The inner bracket 9 includes a left vertical rod 15, a right vertical rod 16 and a support connecting rod 17. The left end of the support connecting rod 17 is connected to the right side of the left vertical rod 15, and the right end of the support connecting rod 17 is connected to the left side of the right vertical rod 16. A first shaft seat 18 and a second shaft seat 19 are provided on the right side of the left vertical rod 15. The first optical axis 6 is provided on the support connecting rod 17 and is arranged between the first shaft seat 18 and the second shaft seat 19. The top end of the first optical axis 6 is connected to the first shaft seat 18, and the bottom end of the first optical axis 6 is connected to the second shaft seat 19. The first shaft seat 18 and the second shaft seat 19 are both arranged below the support connecting rod 17; A third axis seat 20 and a fourth axis seat 21 are provided on the left side surface of the right vertical rod 16, and the second optical axis 7 is provided between the third axis seat 20 and the fourth axis seat 21. The top end of the second optical axis 7 is connected to the third axis seat 20, and the bottom end of the second optical axis 7 is connected to the fourth axis seat 21. The upper and lower positions of the third axis seat 20 and the fourth axis seat 21 correspond to the first axis seat 18 and the second axis seat 19 respectively.

[0026] The energy capture bracket 2 includes a left energy capture vertical rod 22, a right energy capture vertical rod 23, a first energy capture cross rod 24 and a second energy capture cross rod 25. The left ends of the first energy capture cross rod 24 and the second energy capture cross rod 25 are connected to the right side of the left energy capture vertical rod 22, and the right ends of the first energy capture cross rod 24 and the second energy capture cross rod 25 are connected to the left side of the right energy capture vertical rod 23. The first energy capture cross rod 24 is arranged above the second energy capture cross rod 25, and the energy capture column 8 is arranged horizontally between the left energy capture vertical rod 22 and the right energy capture vertical rod 23. The left end of the energy capture column 8 is connected to the bottom end of the left energy capture vertical rod 22, and the right end of the energy capture column 8 is connected to the bottom end of the right energy capture vertical rod 23. The bottom end of the double-sided rack 26 is connected to the first energy-capturing crossbar 24 via a connecting seat 27. The connecting seat 27 is a cast iron connecting seat 27. The connecting seat 27 is mounted on the first energy-capturing crossbar 24 via four M5 bolts, and the double-sided rack 26 is mounted on the connecting seat 27 via two M5 bolts. The energy-capturing bracket 2 is an aluminum alloy bracket. The first sleeve 4 and the second sleeve 5 are connected to the energy-capturing bracket 2 via M5 bolts. A plurality of left and right corresponding first mounting holes and second mounting holes are vertically arranged on the left energy-capturing vertical rod 22 and the right energy-capturing vertical rod 23. The distances between the first mounting holes and the second mounting holes are uniform. The energy-capturing column 8 is mounted between the left energy-capturing vertical rod 22 and the right energy-capturing vertical rod 23 via the first mounting holes and the second mounting holes. When necessary, the upper and lower positions of the energy-capturing column 8 can be adjusted via the first mounting holes and the second mounting holes at different heights.

[0027] The elastic component includes a first left connecting plate 28, a first right connecting plate 29, a first spring 30, a second left connecting plate 31, a second right connecting plate 32, a second spring 33, a third left connecting plate 34, a third right connecting plate 35, a third spring 36, a fourth left connecting plate 37, a fourth right connecting plate 38 and a fourth spring 39; the first left connecting plate 28 and the second left connecting plate 31 are arranged on the right side of the left vertical rod 15, the first left connecting plate 28 is arranged above the first axle seat 18, the second left connecting plate 31 is arranged below the second axle seat 19, the first right connecting plate 29 and the second right connecting plate 32 are arranged on the left side of the left energy capturing vertical rod 22, the first right connecting plate 29 is arranged above the first sleeve 4, the second right connecting plate 32 is arranged below the first sleeve 4, the top end of the first spring 30 is connected to the first left connecting plate 28, the bottom end of the first spring 30 is connected to the first right connecting plate 29, the top end of the second spring 33 is connected to the second right connecting plate 32, and the bottom end of the second spring 33 is connected to the first right connecting plate 29; The third left connecting plate 34 and the fourth left connecting plate 37 are arranged on the right side surface of the right energy capturing vertical rod 23, and the upper and lower positions of the third left connecting plate 34 and the fourth left connecting plate 37 correspond to the first right connecting plate 29 and the second right connecting plate 32 respectively. The third right connecting plate 35 and the fourth right connecting plate 38 are arranged on the left side surface of the right vertical rod 16, and the upper and lower positions of the third right connecting plate 35 and the fourth right connecting plate 38 correspond to the first left connecting plate 28 and the second left connecting plate 31 respectively. The top end of the third spring 36 is connected to the third right connecting plate 35, the bottom end of the third spring 36 is connected to the third left connecting plate 34, the top end of the fourth spring 39 is connected to the fourth left connecting plate 37, and the top end of the fourth spring 39 is connected to the fourth right connecting plate 38.

[0028] The transmission conversion mechanism 3 includes a gear frame 40, a first input gear 41, a second input gear 42, a first transmission shaft 43, a second transmission shaft 44, a first output gear 45, a second output gear 46, a first one-way bearing, a second one-way bearing, a reduction gear 47, a transmission gear 48 and a reduction gear output shaft; the gear frame 40 is a rectangular frame and is arranged on the upper surface of the supporting connecting rod 17, the first input gear 41 and the second input gear 42 are mounted on the front side of the gear frame 40 through the front mounting seat, the first output gear 45, the second output gear 46, the reduction gear 47 and the transmission gear 48 are all mounted on the rear side of the gear frame 40 through the rear mounting seat, the first input gear 41 is engaged with the double-sided rack 26 and is located on the left side of the double-sided rack 26, the second input gear 42 is engaged with the double-sided rack 26 Located to the right of the double-sided rack 26, a first input gear 41 is mounted at the rear end of a first transmission shaft 43, a first output gear 45 is mounted at the front end of the first transmission shaft 43 via a first one-way bearing, a second input gear 42 is mounted at the rear end of a second transmission shaft 44, and a second output gear 46 is mounted at the front end of the second transmission shaft 44 via a second one-way bearing. Both the first and second output gears 45 and 46 engage with a reduction gear 47. The first output gear 45 is located to the lower left of the reduction gear 47, while the second output gear 46 is located to the lower right of the reduction gear 47. A transmission gear 48 is mounted at the rear end of the reduction gear shaft and engages with and is located above the reduction gear 47. The input end of the micro-generator is connected to the front end of the reduction gear shaft. The first and second input gears 41 and 42 are symmetrically arranged on either side of the double-sided rack 26. When the rack reciprocates, the two gears rotate at the same speed and in opposite directions. The first and second one-way bearings are unidirectional needle roller bearings. These bearings play a crucial role in altering the motion pattern. The one-way bearings convert the reciprocating rotation of the input gear into unidirectional rotation of the output gear. The two one-way bearings are installed in opposite directions, ensuring that when the input gear rotates forward and reverse, the two output gears maintain alternating rotation in the same direction, thereby driving the reduction gear 47 and, in turn, the micro-generator.

[0029] Example 2 The electric energy conversion method based on vortex-induced vibration is implemented based on the above-mentioned electric energy conversion device and includes the following steps: The electric energy conversion device is installed in the corresponding fluid environment through the outer bracket 10 and the inner bracket 9. The energy capture column 8 generates periodic vibrations in the fluid with a constant flow rate, thereby driving the energy capture bracket 2 to perform reciprocating linear motion in the vertical direction (the energy capture effect of the energy capture bracket 2 and the energy capture column 8 is the existing technology. The energy capture column 8 is a non-streamlined column. When the non-streamlined column is in a constant flow rate, vortices are alternately generated on both sides, causing the column to vibrate periodically. I will not go into details here). Under normal circumstances, the first spring 30, the second spring 33, the third spring 36 and the fourth spring 39 are in a relaxed state. When the energy capture bracket 2 moves upward, the first spring 30 and the third spring 36 are compressed, and the second spring 33 and the fourth spring 39 are stretched. When the energy capture bracket 2 moves downward, the first spring 30 and the third spring 36 are stretched. , the second spring 33 and the fourth spring 39 are compressed; during the reciprocating linear motion of the energy capture bracket 2 in the vertical direction, the double-sided rack 26 moves up and down with the energy capture bracket 2, thereby driving the first input gear 41 and the second input gear 42 of the double-sided rack 26 to rotate back and forth, and the reciprocating rotation of the first input gear 41 and the second input gear 42 drives the first output gear 45 and the second output gear 46 to rotate through the first transmission shaft 43 and the second transmission shaft 44. Since the first output gear 45 and the second output gear 46 are respectively installed on the first transmission shaft 43 and the second transmission shaft 44 through the first one-way bearing and the second one-way bearing, the first output gear 45 and the second output gear 46 rotate unidirectionally, thereby driving the reduction gear 47 to rotate, and finally driving the micro generator to generate electricity.

[0030] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An electric energy conversion device based on vortex-induced vibration, characterized in that: The invention comprises a bracket assembly, an energy-capturing bracket, a transmission conversion mechanism and a micro-generator; a first sleeve and a second sleeve are respectively provided on both sides of the energy-capturing bracket, a first optical axis and a second optical axis corresponding to the first sleeve and the second sleeve are respectively provided on the inner side of the bracket assembly, the first optical axis and the second optical axis are respectively correspondingly inserted into the first sleeve and the second sleeve so that the energy-capturing bracket is slidably connected to the bracket assembly, and an elastic component is provided between the bracket assembly and the energy-capturing bracket so that the energy-capturing bracket is elastically connected to the bracket assembly; An energy-capturing column is arranged horizontally at the bottom of the energy-capturing bracket, and the top of the energy-capturing bracket is connected to the input end of the transmission conversion mechanism through a double-sided rack, and the micro-generator is connected to the output end of the transmission conversion mechanism through transmission; the energy-capturing column generates periodic vibrations in the fluid and drives the energy-capturing bracket to move back and forth up and down, and the reciprocating up and down movement of the energy-capturing bracket drives the micro-generator to generate electricity through the transmission conversion mechanism.

2. The electric energy conversion device based on vortex-induced vibration according to claim 1, characterized in that: The bracket assembly includes an inner bracket arranged vertically and an outer bracket arranged horizontally; The outer bracket includes a front crossbar, a rear crossbar, a left crossbar and a right crossbar, the front and rear ends of the left crossbar are respectively connected to the left end of the front crossbar and the left end of the rear crossbar, and the front and rear ends of the right crossbar are respectively connected to the right end of the front crossbar and the right end of the rear crossbar; The inner bracket includes a left vertical rod, a right vertical rod and a support connecting rod, the left end of the support connecting rod is connected to the right side of the left vertical rod, the right end of the support connecting rod is connected to the left side of the right vertical rod, a first shaft seat and a second shaft seat are provided on the right side of the left vertical rod, a first optical axis is provided on the support connecting rod and is arranged between the first shaft seat and the second shaft seat, the top end of the first optical axis is connected to the first shaft seat, the bottom end of the first optical axis is connected to the second shaft seat, and the first shaft seat and the second shaft seat are both arranged below the support connecting rod; A third axis seat and a fourth axis seat are arranged on the left side surface of the right vertical rod, the second optical axis is arranged between the third axis seat and the fourth axis seat, the top end of the second optical axis is connected to the third axis seat, and the bottom end of the second optical axis is connected to the fourth axis seat, and the upper and lower positions of the third axis seat and the fourth axis seat correspond to the first axis seat and the second axis seat respectively.

3. The electric energy conversion device based on vortex-induced vibration according to claim 2, characterized in that: The energy capture bracket includes a left energy capture vertical rod, a right energy capture vertical rod, a first energy capture cross rod and a second energy capture cross rod. The left ends of the first energy capture cross rod and the second energy capture cross rod are connected to the right side of the left energy capture vertical rod, and the right ends of the first energy capture cross rod and the second energy capture cross rod are connected to the left side of the right energy capture vertical rod. The first energy capture cross rod is arranged above the second energy capture cross rod, and the energy capture column is arranged horizontally between the left energy capture vertical rod and the right energy capture vertical rod. The left end of the energy capture column is connected to the bottom end of the left energy capture vertical rod, and the right end of the energy capture column is connected to the bottom end of the right energy capture vertical rod.

4. The electric energy conversion device based on vortex-induced vibration according to claim 3, characterized in that: The elastic component includes a first left connecting plate, a first right connecting plate, a first spring, a second left connecting plate, a second right connecting plate, a second spring, a third left connecting plate, a third right connecting plate, a third spring, a fourth left connecting plate, a fourth right connecting plate and a fourth spring; the first left connecting plate and the second left connecting plate are arranged on the right side surface of the left vertical rod, the first left connecting plate is arranged above the first axle seat, the second left connecting plate is arranged below the second axle seat, the first right connecting plate and the second right connecting plate are arranged on the left side surface of the left energy capturing vertical rod, the first right connecting plate is arranged above the first sleeve, the second right connecting plate is arranged below the first sleeve, the top end of the first spring is connected to the first left connecting plate, the bottom end of the first spring is connected to the first right connecting plate, the top end of the second spring is connected to the second right connecting plate, and the bottom end of the second spring is connected to the first right connecting plate; The third left connecting plate and the fourth left connecting plate are arranged on the right side surface of the right energy capturing vertical rod, and the upper and lower positions of the third left connecting plate and the fourth left connecting plate correspond to the first right connecting plate and the second right connecting plate respectively. The third right connecting plate and the fourth right connecting plate are arranged on the left side surface of the right vertical rod, and the upper and lower positions of the third right connecting plate and the fourth right connecting plate correspond to the first left connecting plate and the second left connecting plate respectively. The top end of the third spring is connected to the third right connecting plate, the bottom end of the third spring is connected to the third left connecting plate, the top end of the fourth spring is connected to the fourth left connecting plate, and the top end of the fourth spring is connected to the fourth right connecting plate.

5. The electric energy conversion device based on vortex-induced vibration according to claim 4 is characterized in that: The transmission conversion mechanism includes a gear frame, a first input gear, a second input gear, a first transmission shaft, a second transmission shaft, a first output gear, a second output gear, a first one-way bearing, a second one-way bearing, a reduction gear, a transmission gear and a reduction gear output shaft; the gear frame is a rectangular frame and is arranged on the upper surface of the supporting connecting rod, the first input gear and the second input gear are mounted on the front side of the gear frame through the front mounting seat, the first output gear, the second output gear, the reduction gear and the transmission gear are all mounted on the rear side of the gear frame through the rear mounting seat, the first input gear is engaged with the double-sided rack and is located on the left side of the double-sided rack, the second input gear is engaged with the double-sided rack and is located on the left side of the double-sided rack On the right side of the face rack, the first input gear is installed at the rear end of the first transmission shaft, the first output gear is installed at the front end of the first transmission shaft through the first one-way bearing, the second input gear is installed at the rear end of the second transmission shaft, and the second output gear is installed at the front end of the second transmission shaft through the second one-way bearing. The first output gear and the second output gear are both engaged with the reduction gear. The first output gear is located at the lower left of the reduction gear, and the second output gear is located at the lower right of the reduction gear. The transmission gear is installed at the rear end of the reduction gear transmission shaft, the transmission gear is engaged with the reduction gear and is located above the reduction gear. The input end of the micro generator is connected to the front end of the reduction gear transmission shaft.

6. The electric energy conversion device based on vortex-induced vibration according to claim 5, characterized in that: The bottom end of the double-sided rack is connected to the first energy-capturing crossbar through a connecting seat.

7. A method for converting electric energy based on vortex-induced vibration, implemented based on the electric energy conversion device based on vortex-induced vibration according to any one of claims 1 to 6, characterized in that: The steps include: The electric energy conversion device is installed in a corresponding fluid environment through an outer bracket and an inner bracket. The energy-capturing column generates periodic vibrations in the fluid with a constant flow rate, thereby driving the energy-capturing bracket to perform reciprocating linear motion in the vertical direction. Under normal conditions, the first spring, the second spring, the third spring and the fourth spring are in a relaxed state. When the energy-capturing bracket moves upward, the first spring and the third spring are compressed, and the second spring and the fourth spring are stretched. When the energy-capturing bracket moves downward, the first spring and the third spring are stretched, and the second spring and the fourth spring are compressed. During the reciprocating linear motion of the energy-capturing bracket in the vertical direction, the double-sided rack moves up and down with the energy-capturing bracket, thereby driving the first input gear and the second input gear of the double-sided rack to rotate reciprocatingly. The reciprocating rotation of the first input gear and the second input gear drives the first output gear and the second output gear to rotate through the first transmission shaft and the second transmission shaft. Since the first output gear and the second output gear are respectively installed on the first transmission shaft and the second transmission shaft through the first one-way bearing and the second one-way bearing, the first output gear and the second output gear rotate unidirectionally, thereby driving the reduction gear to rotate, and finally driving the micro-generator to generate electricity.

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