Rotary spoiler cylinder vibration suppression energy harvesting device and method

Abstract

According to the rotary spoiler cylinder vibration suppression energy harvesting device and method, in the device, an internal fixed sleeve is attached to a cylinder, and rolling bearings are fixed to the upper end and the lower end of the internal fixed sleeve; the middle fixing sleeve is arranged outside the inner fixing sleeve in a sleeving mode, a pair of grooves is formed in the middle fixing sleeve, and the permanent magnets are arranged in the grooves. The middle fixing sleeve is sleeved with the shell sleeve, and connection and free axial rotation can be achieved through the inner rolling bearing. The copper coil is arranged inside the shell sleeve. The spoiler extends in the direction away from the column body from the shell sleeve, the spoiler is a flexible plate and provided with a piezoelectric plate, the whole spoiler can be detached from the shell sleeve, water flow drives the spoiler to rotate so as to remove the vortex vibration phenomenon, and the shell sleeve rotates around the column body. The permanent magnets and the copper coils form a stator and rotor which rotates to generate induced current, and the piezoelectric patches are bent to perform piezoelectric power generation. The device can eliminate the vortex vibration phenomenon, and electromagnetic and piezoelectric hybrid drive power generation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of vortex-induced vibration suppression and energy capture, and in particular to a rotating spoiler column vibration suppression and energy capture device and method. Background Art

[0002] When the ocean current flows through the column structure, vortices that alternately shed on both sides of the structure will exert periodic fluid forces on the structure to make the structure reciprocate. The reciprocating motion of the structure will change the flow pattern of the fluid, and then change the fluid force acting on the structure. This fluid-solid coupling phenomenon is called "vortex-induced vibration". When the natural frequency of the riser is close to the vortex shedding frequency, resonance will occur, which will cause vortex vibration phenomenon that damages the structure and cause great harm. Therefore, measures must be taken to destroy the regular shedding of the wake vortex and reduce the adverse effects of vortex-induced vibration. At the same time, the ocean also contains abundant renewable energy, which has become a hot spot for new energy research at home and abroad. Among them, the energy density of tidal energy is about 4 times that of wind energy and 300 times that of solar energy. It has a high energy density and low development cost, and has good market application prospects. As a typical large aspect ratio structure in marine engineering, the marine riser has advantages in capturing vortex-induced vibration energy and then capturing tidal energy, and has important engineering application value. However, there are still few studies that consider both vibration suppression and energy capture of the riser.

[0003] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the invention

[0004] The object of the present invention is to provide a rotating spoiler column vibration suppression and energy capture device and method, which can eliminate vortex vibration phenomenon and generate electricity through electromagnetic and piezoelectric hybrid drive.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A rotating spoiler column vibration suppression and energy capture device of the present invention comprises:

[0007] The inner fixed sleeve is attached to the column, and rolling bearings are fixed at the upper and lower ends of the inner fixed sleeve.

[0008] A middle fixing sleeve is sleeved with the inner fixing sleeve, and the middle fixing sleeve is provided with at least one pair of grooves.

[0009] at least one pair of permanent magnets, the permanent magnets being disposed in the grooves,

[0010] an outer sleeve, which is sleeved on the middle fixed sleeve and rotatably connected to the inner fixed sleeve via the rolling bearing,

[0011] A copper coil is arranged inside the outer shell,

[0012] A spoiler extends from the outer shell in a direction away from the column. The spoiler is a flexible plate and is provided with a piezoelectric sheet. The water flow drives the spoiler to rotate to eliminate vortex vibration. The outer shell rotates around the column. The permanent magnet and the copper coil constitute a stator and rotor that rotate to generate an induced current and the piezoelectric sheet undergoes bending to perform piezoelectric power generation.

[0013] In the rotating spoiler column vibration suppression and energy capture device, a pair of grooves are symmetrically distributed on the middle fixing sleeve.

[0014] In the rotating spoiler column vibration suppression and energy capture device, the rolling bearing includes an inner ring connected to an internal fixed sleeve and an outer ring connected to an outer shell.

[0015] In the rotating spoiler column vibration suppression and energy capture device, the piezoelectric sheet comprises a stacked protective film, a ceramic piezoelectric sheet and a substrate.

[0016] In the rotating spoiler column vibration suppression and energy capture device, the permanent magnet is a tile-shaped permanent magnet.

[0017] In the rotating spoiler column vibration suppression and energy capture device, the middle fixed sleeve is fixedly surrounded by the outer side of the inner fixed sleeve.

[0018] In the rotating spoiler column vibration suppression and energy capture device, the spoiler and the outer shell have the same height and the piezoelectric sheet extends in the height direction at one end of the spoiler close to the outer shell.

[0019] In the rotating spoiler column vibration suppression and energy capture device, the column, the inner fixing sleeve, the middle fixing sleeve and the outer shell are coaxially symmetrical structures.

[0020] In the rotating spoiler column vibration suppression and energy capture device, a plurality of rotating spoiler column vibration suppression and energy capture devices are serially sleeved on the column.

[0021] The method for using the rotating spoiler column vibration suppression and energy capture device comprises the following steps:

[0022] The inner fixing sleeve is attached to the column, the middle fixing sleeve is sleeved with the inner fixing sleeve, the permanent magnet is arranged in the groove, and the outer shell is sleeved with the middle fixing sleeve and rotatably connected with the inner fixing sleeve.

[0023] The water flow drives the spoiler to rotate, so that the outer shell rotates around the column, the permanent magnet and the copper coil constitute the stator and rotor to rotate to generate induced current, the spoiler is forced to rotate to eliminate vortex vibration and the spoiler is forced to bend, and the bending of the spoiler drives the piezoelectric sheet to generate piezoelectric power.

[0024] In the above technical scheme, the present invention provides a rotating spoiler column vibration suppression and energy capture device, which has the following beneficial effects: the vibration suppression effect of the rotating spoiler column vibration suppression and energy capture device is caused by the water flow driving the spoiler to rotate, so the device has a major advantage of saving energy, and improves the unidirectional vibration suppression of the traditional fixed spoiler. With the help of freely rotating rolling bearings, the spoiler can automatically adjust its direction according to the flow field conditions, becoming an omnidirectional vibration suppression device, avoiding the occurrence of vortex vibration from the root, greatly broadening the applicable environment of the spoiler in specific projects, and at the same time, the device also couples piezoelectric power generation with electromagnetic power generation, making full use of the energy brought by the water flow, and can maximize the device's capture of ocean energy. The device can fully utilize ocean energy to drive the device to operate and realize the capture of ocean energy, and has good market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of the disassembled structure of the rotating spoiler column vibration suppression and energy capture device of the present invention.

[0027] Figure 2 It is a schematic diagram of the combined cross-section of the rotating spoiler column vibration suppression and energy capture device of the present invention.

[0028] Figure 3 It is a schematic diagram of the outer shell of the rotating spoiler column vibration suppression and energy capture device of the present invention.

[0029] Figure 4 It is a three-dimensional schematic diagram of the rotating spoiler column vibration suppression and energy capture device of the present invention.

[0030] Figure 5 It is a top view schematic diagram of the rotating spoiler column vibration suppression and energy capture device of the present invention.

[0031] The figures are marked as follows: 1. outer shell; 2. permanent magnet; 3. middle fixed sleeve; 4. groove; 5. rolling bearing; 6. inner fixed sleeve; 7. piezoelectric sheet; 8. spoiler; 9. protective film; 10. ceramic piezoelectric sheet; 11. copper sheet; 12. slot; 13. key. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] See also Figure 1-5 As shown, in one embodiment, a rotating spoiler column vibration suppression and energy capture device of the present invention comprises:

[0041] The internal fixed sleeve 6 is attached to the column, and rolling bearings 5 ​​are fixed at the upper and lower ends of the internal fixed sleeve 6 to achieve connection and free axial rotation.

[0042] The middle fixing sleeve 3 is sleeved with the inner fixing sleeve 6, and the middle fixing sleeve 3 is provided with at least one pair of grooves 4.

[0043] at least one pair of permanent magnets 2, the permanent magnets 2 being arranged in the grooves 4,

[0044] The outer sleeve 1 is sleeved on the middle fixed sleeve 3 and rotatably connected to the inner fixed sleeve 6 via the rolling bearing 5.

[0045] The copper coil is arranged inside the outer shell 1.

[0046] The spoiler 8 extends from the outer shell 1 in a direction away from the column. The spoiler 8 is a flexible plate and is provided with a piezoelectric sheet 7. The water flow drives the spoiler 8 to rotate to remove the vortex vibration phenomenon. The outer shell 1 rotates around the column. The permanent magnet 2 and the copper coil constitute the stator and rotor to rotate to generate an induced current and the piezoelectric sheet 7 is bent to generate piezoelectric power. Further, the spoiler is a flexible plate and is provided with a piezoelectric sheet and can be detached from the outer shell as a whole.

[0047] In a preferred embodiment of the rotating spoiler column vibration suppression and energy capture device, a pair of grooves 4 are symmetrically distributed on the middle fixing sleeve 3.

[0048] In a preferred embodiment of the rotating spoiler column vibration suppression and energy capture device, the rolling bearing 5 includes an inner ring connected to the internal fixing sleeve 6 and an outer ring connected to the outer shell 1 .

[0049] In the preferred embodiment of the rotating spoiler column vibration suppression and energy capture device, the piezoelectric sheet 7 includes a laminated protective film 9, a ceramic piezoelectric sheet 10 and a substrate 11. The substrate not only provides structural support for the piezoelectric sheet, but also plays a key role in performance optimization and other aspects.

[0050] In a preferred embodiment of the rotating spoiler column vibration suppression and energy capture device, the permanent magnet 2 is a tile-type permanent magnet.

[0051] In a preferred embodiment of the rotating spoiler column vibration suppression and energy capture device, the middle fixed sleeve 3 is fixedly surrounded by the outer side of the inner fixed sleeve 6 .

[0052] In a preferred embodiment of the rotating spoiler column vibration suppression and energy capture device, the spoiler 8 is at the same height as the outer shell 1 and the piezoelectric sheet 7 extends in the height direction at one end of the spoiler 8 close to the outer shell 1 .

[0053] In a preferred embodiment of the rotating spoiler column vibration suppression and energy capture device, the column, the inner fixing sleeve 6, the middle fixing sleeve 3 and the outer shell 1 are coaxially symmetrical structures.

[0054] In a preferred embodiment of the rotating spoiler column vibration suppression and energy capture device, a plurality of rotating spoiler column vibration suppression and energy capture devices are serially sleeved on the column.

[0055] The method for using the rotating spoiler column vibration suppression and energy capture device comprises the following steps:

[0056] The inner fixing sleeve 6 is attached to the column, the middle fixing sleeve 3 is sleeved with the inner fixing sleeve 6, the permanent magnet 2 is arranged in the groove 4, the outer sleeve 1 is sleeved with the middle fixing sleeve 3 and is rotatably connected with the inner fixing sleeve 6,

[0057] The water flow drives the spoiler 8 to rotate, so that the outer shell 1 rotates around the column, the permanent magnet 2 and the copper coil constitute the stator and rotor to rotate to generate induced current, the spoiler 8 is forced to rotate to eliminate vortex vibration and the spoiler 8 is forced to bend, and the bending of the spoiler 8 drives the piezoelectric sheet 7 to generate piezoelectric power.

[0058] In one embodiment, the spoiler 8 is detachably connected to the outer shell 1. Further, the outer shell 1 is provided with a slot 12 extending in the height direction, and the spoiler 8 is provided with a key 13 extending in the height direction and insertable into the slot 12. The cross section of the slot 12 is a dovetail groove.

[0059] In one embodiment, the electromagnetic piezoelectric hybrid driven rotating spoiler 8 column vibration suppression device is composed of an outer shell 1, a middle fixed sleeve 3, and an inner fixed sleeve 6. The outer shell 1 is connected to the spoiler 8, and a piezoelectric sheet 7 is embedded on the surface of the spoiler 8. The piezoelectric sheet 7 is composed of a protective film 9, a ceramic piezoelectric sheet 10 and a copper sheet 11. The middle fixed sleeve 3 has symmetrical grooves 4 to install a pair of tile-shaped permanent magnets. The inner fixed sleeve 6 is directly attached to the column and is respectively connected to the upper and lower rolling bearings 5. The method of using the outer shell 1 includes the following steps:

[0060] S1: When the water flows, it can drive the spoiler 8 to rotate. When the spoiler 8 rotates, it can drive the outer shell 1 to rotate around the pipe axis. When the outer shell 1 rotates, it can drive the stator and rotor composed of the permanent magnet 2 and the copper coil inside to rotate and generate induced current;

[0061] S2: When the soft-rubber spoiler 8 is rotated under force, the bending of the spoiler 8 drives the piezoelectric sheet 7 to generate piezoelectric power.

[0062] In one embodiment, the outer shell 1 of the electromagnetic piezoelectric hybrid driven rotating spoiler 8 column vibration suppression device is connected to the middle fixed sleeve 3 and the inner fixed sleeve 6. The spoiler 8 is connected to the outer shell 1, the piezoelectric sheet 7 is fixed on the surface of the spoiler 8, the tile-shaped permanent magnet 2 is installed in the inner groove 4 of the outer shell 1 and the middle fixed sleeve 3, and the rolling bearing 5 is fixed on the upper and lower sides of the inner fixed sleeve 6. Figure 2 As shown, the device as a whole is divided into three layers from the outside to the inside. The outermost layer is the outer shell 1, the spoiler 8 and the piezoelectric sheet 7 installed on the surface of the spoiler 8, followed by the middle fixed sleeve 3 and the tile-shaped permanent magnet installed in the groove 4 of the middle fixed sleeve 3, and finally the internal fixed sleeve 6 directly connected to the column and the rolling bearings 5 ​​fixed at the upper and lower ends of the internal fixed sleeve 6 respectively.

[0063] Finally, it should be noted that the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present application.

[0064] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rotating spoiler column vibration suppression and energy capture device, characterized in that: These include, The inner fixed sleeve is attached to the column, and rolling bearings are fixed at the upper and lower ends of the inner fixed sleeve. A middle fixing sleeve is sleeved with the inner fixing sleeve, and the middle fixing sleeve is provided with at least one pair of grooves. at least one pair of permanent magnets, the permanent magnets being disposed in the grooves, an outer sleeve, which is sleeved on the middle fixed sleeve and rotatably connected to the inner fixed sleeve via the rolling bearing, A copper coil is arranged inside the outer shell, A spoiler extends from the outer shell in a direction away from the column. The spoiler is a flexible plate and is provided with a piezoelectric sheet. The water flow drives the spoiler to rotate to eliminate vortex vibration. The outer shell rotates around the column. The permanent magnet and the copper coil constitute a stator and rotor that rotate to generate an induced current and the piezoelectric sheet undergoes bending to perform piezoelectric power generation.

2. A rotating spoiler column vibration suppression and energy capture device according to claim 1, characterized in that: A pair of grooves are symmetrically distributed on the middle fixing sleeve.

3. The rotating spoiler column vibration suppression and energy capture device according to claim 1, characterized in that: The rolling bearing comprises an inner ring connected to an inner fixed sleeve and an outer ring connected to an outer shell.

4. The rotating spoiler column vibration suppression and energy capture device according to claim 1, characterized in that: The piezoelectric sheet includes a stacked protective film, a ceramic piezoelectric sheet and a substrate.

5. The rotating spoiler column vibration suppression and energy capture device according to claim 1, characterized in that: The permanent magnet is a tile-type permanent magnet.

6. The rotating spoiler column vibration suppression and energy capture device according to claim 1, characterized in that: The middle fixing sleeve is fixedly surrounded by the outer side of the inner fixing sleeve.

7. The rotating spoiler column vibration suppression and energy capture device according to claim 1, characterized in that: The spoiler is at the same height as the outer shell, and the piezoelectric sheet extends along the height direction at one end of the spoiler close to the outer shell.

8. The rotating spoiler column vibration suppression and energy capture device according to claim 1, characterized in that: The column, the inner fixing sleeve, the middle fixing sleeve and the outer shell are coaxially symmetrical structures.

9. The rotating spoiler column vibration suppression and energy capture device according to claim 1, characterized in that: A plurality of rotating spoiler column vibration suppression and energy capture devices are sleeved on the column in series.

10. A method for using a rotating spoiler column vibration suppression and energy capture device according to any one of claims 1 to 9, characterized in that: The steps include, The inner fixing sleeve is attached to the column, the middle fixing sleeve is sleeved with the inner fixing sleeve, the permanent magnet is arranged in the groove, and the outer shell is sleeved with the middle fixing sleeve and rotatably connected with the inner fixing sleeve. The water flow drives the spoiler to rotate, so that the outer shell rotates around the column, the permanent magnet and the copper coil constitute the stator and rotor to rotate to generate induced current, the spoiler is forced to rotate to eliminate vortex vibration and the spoiler is forced to bend, and the bending of the spoiler drives the piezoelectric sheet to generate piezoelectric power.

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