CN116658348B - Flow-induced vibration power generation vibrator capable of controlling vibration - Google Patents
Flow-induced vibration power generation vibrator capable of controlling vibrationInfo
- Publication number
- CN116658348B CN116658348B CN202310622212.2A CN202310622212A CN116658348B CN 116658348 B CN116658348 B CN 116658348B CN 202310622212 A CN202310622212 A CN 202310622212A CN 116658348 B CN116658348 B CN 116658348B
- Authority
- CN
- China
- Prior art keywords
- vibrator
- vibrators
- flow
- vibration
- power generation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
本发明公开一种可控制振动大小的流致振动发电振子，由两个端板和三个振子组成，每个所述振子均为相同大小的正三棱柱结构，每个所述振子的重心位置设置有贯穿振子顶部和底部的滑轴，两个所述端板相对的表面上围绕端板几何中心设置有互成120°的滑槽，每个所述振子两端的滑轴嵌入所述滑槽内形成滑动连接，水流方向的上游布置两个振子，下游布置一个振子，其中所有振子均为其中一条侧边垂直于水流方向布置，每个振子中与垂直水流方向的侧边相对的顶角方向朝向下游方向。
The present invention discloses a flow-induced vibration power generation vibrator with controllable vibration size. The vibrator consists of two end plates and three vibrators. Each of the vibrators is a regular triangular prism structure of the same size. A sliding shaft running through the top and bottom of the vibrator is provided at the center of gravity of each vibrator. Slide grooves 120° to each other are provided on the opposite surfaces of the two end plates around the geometric center of the end plates. The sliding shafts at both ends of each vibrator are embedded in the slide grooves to form a sliding connection. Two vibrators are arranged upstream of the water flow direction and one vibrator is arranged downstream. All the vibrators are arranged with one side perpendicular to the water flow direction, and the top angle of each vibrator opposite to the side perpendicular to the water flow direction is facing the downstream direction.
Description
Technical Field
The application relates to the field of offshore new energy and ocean current power generation and fluid mechanics, in particular to a flow-induced vibration power generation vibrator capable of realizing vibration size control.
Background
The global ocean current distribution is wide, the reserves are huge, and the developable ocean current energy exceeds 6×10 6 MW. The current-induced vibration power generation is used as the front technology of the current power generation, has the remarkable advantages of high energy density, low starting flow speed, no occupation of cultivated land, no influence on navigation and the like, and has good application prospect by capturing energy by utilizing the vibration of the current-induced vibrator.
At present, the shape of a flow-induced vibration power generation vibrator is studied more, and the purpose of the flow-induced vibration power generation vibrator is to improve the vibration strength so as to obtain more fluid kinetic energy. The partial non-circular section vibrator has larger amplitude and can better realize energy conversion because of the non-axisymmetric section characteristic and the relaxation phenomenon under the condition of high flow velocity. However, since the amplitude is large and the amplitude of the vibrator continues to increase with the flow rate, this tends to cause the amplitude of the vibration to exceed the vibration limit, and once the limit is exceeded, a destructive safety accident tends to be caused. For this reason, it is necessary to propose a structure or a method suitable for suppressing flow-induced vibrations or shutdown. At present, most of available methods are to increase the system load, force the system damping to be improved, and thus inhibit vibration, and most of the methods rely on self-control equipment. If a simpler method can be provided, double safety guarantee is increased, and certain economy is achieved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, aims at the characteristics of flow-induced vibration power generation, and provides a flow-induced vibration power generation vibrator capable of realizing vibration size control for realizing vibration suppression and emergency stop effects.
The invention aims at realizing the following technical scheme:
A flow-induced vibration power generation vibrator capable of controlling vibration is composed of two end plates and three vibrators, wherein each vibrator is of a regular triangular prism structure with the same size, sliding shafts penetrating through the top and the bottom of the vibrator are arranged at the center of gravity of each vibrator, sliding grooves which are 120 degrees each other are formed in the surfaces of the two opposite end plates around the geometric center of the end plates, the sliding shafts at the two ends of each vibrator are embedded into the sliding grooves to form sliding connection, two vibrators are arranged at the upstream of the water flow direction, one vibrator is arranged at the downstream of the two vibrators, one side of each vibrator is perpendicular to the water flow direction, and the vertex angle direction of each vibrator opposite to the side perpendicular to the water flow direction faces the downstream direction.
Further, the vibrator is made of one of steel, aluminum alloy, plastic and organic glass.
Further, the side length of the vibrator is 8 cm-25 cm, and the length of the vibrator perpendicular to the water flow direction is 8-12 times of the side length.
Further, the cross section of the end plate is round or square, the cross section is 4-6 times of the side length of the vibrator, the thickness is 1-2 cm, and the end plate is made of one of steel, aluminum alloy, plastic and organic glass.
Further, the end plate is connected with a transmission structure of the flow-induced vibration power generation system, and vibration of the three vibrators is transmitted to the power generation system, so that energy conversion is achieved.
Furthermore, the length of the sliding groove is equal to the side length of the vibrators, the three vibrators can synchronously slide radially inwards or outwards around the geometric center of the end plate along the three sliding grooves, and in the sliding process, the angles of the three vibrators relative to the water flow direction are unchanged.
Further, when vibration needs to be increased, three vibrators are synchronously concentrated to the center through the sliding shaft, an integral triangular prism is finally formed, vortex shedding is alternately generated above and below the integral triangular prism when water flows through the integral triangular prism formed by the three vibrators, and finally each vibrator is driven to synchronously vibrate up and down, so that the vibration intensity is increased, and the electric energy utilization effect is improved.
Further, when the machine is stopped or vibration needs to be reduced, the three vibrators synchronously slide outwards through the sliding shafts, Y-shaped flow channels are formed in the middle of the three vibrators, vortex can be generated at sharp angle positions of the respective side faces when water flows through the two vibrators at the upstream, and meanwhile, the water flows through the Y-shaped flow channels formed in the middle of the three vibrators to influence the falling of the vortex, so that the intensity of vibration is influenced, and the three vibrators are not vibrated.
The invention also provides a flow-induced vibration power generation vibrator capable of controlling the vibration size, which consists of two end plates and three vibrators, wherein each vibrator is of a regular triangular prism structure with the same size, sliding shafts are arranged from the center of gravity to one of the top corners of each vibrator, sliding grooves which are 120 degrees each other are formed around the geometric center of the end plate on the opposite surfaces of the two end plates, the sliding shafts at the two ends of each vibrator are embedded into the sliding grooves to form sliding connection, the two vibrators are arranged at the upstream of the water flow direction, one vibrator is arranged at the downstream of the water flow direction, all the vibrators are arranged at the side edges of the vibrator perpendicular to the water flow direction, and the vertex angle direction opposite to the side edge perpendicular to the water flow direction in each vibrator faces the downstream direction.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
The flow-induced vibration power generation vibrator is formed by combining three synchronous sliding regular triangular prism vibrators, wherein the three regular triangular prism vibrators are firstly concentrated and tightened inwards to form a complete large regular triangular prism, so that a typical relaxation phenomenon can occur in vibration, the vibration amplitude is large, the vibration energy conversion potential is large, secondly, the three regular triangular prisms are outwards scattered to form a natural Y-shaped runner which can prevent vortex shedding of upper and lower vibrators, so that the effect of vibration inhibition is achieved, thirdly, the three regular triangular prisms can slide rapidly in a chute, the vibrator can respond rapidly after emergency conditions are met, vibration control and emergency shutdown are achieved through the vibrator with the changeable cross section shape, the vibration amplitude is reduced, and safety of equipment is guaranteed.
Drawings
FIG. 1 is a schematic cross-sectional view of an operating state of a flow-induced vibration power generation vibrator with controllable vibration magnitude;
FIG. 2 is a schematic cross-sectional view of a flow-induced vibration power generator vibrator in a shutdown state with controllable vibration magnitude;
FIG. 3 is a schematic cross-sectional view of the working state of a flow-induced vibration power generation vibrator (wake flow shape) with controllable vibration magnitude;
FIG. 4 is a schematic cross-sectional view of a flow-induced vibration power generator in a shutdown state (wake-up mode) with controllable vibration magnitude;
In the figure, 1A-vibrator A, 1B-vibrator B, 1C-vibrator C, 2A-sliding shaft A, 2B-sliding shaft B, 2C-sliding shaft C, 3A-sliding groove A, 3B-sliding groove B, 3C-sliding groove C, 4-end plate, 5-water flow and 6-vortex.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a flow-induced vibration power generating vibrator capable of controlling the magnitude of vibration, which is composed of three vibrators 1A, 1B, 1C, slide shafts 2A, 2B, 2C, slide grooves 3A, 3B, 3C, and an end plate 4. Wherein, the vibrators 1A, 1B and 1C are identical regular triangular prisms, the side length of the section is 10cm, the length of the vibrator vertical to the water flow direction is 1m, and the vibrator can be made of steel materials;
sliding shafts 2A, 2B and 2C penetrating through the top and the bottom of the vibrators are arranged at the center of gravity positions of the three vibrators 1A, 1B and 1C, namely the centers of cross sections of two ends perpendicular to the water flow direction, and the sliding shafts 2A, 2B and 2C are fixedly connected with the vibrators 1A, 1B and 1C respectively.
End plates 4 are arranged at two ends of the three vibrators 1A, 1B and 1C perpendicular to the water flow direction, the cross section of each end plate 4 can be round, the radius of the cross section is 20cm, the thickness of each end plate is 1cm, the end plates 4 are made of steel materials, the end plates 4 are connected with a transmission structure of the flow-induced vibration power generation system, three sliding grooves 3A, 3B and 3C are arranged in the end plates 4, the length of each end plate is 10cm, the three vibrators 1A, 1B and 1C are restrained by sliding shafts 2A, 2B and 2C to slide in the corresponding sliding grooves, the three vibrators 1A, 1B, 1C and the three sliding grooves 3A, 3B and 3C are radially arranged at equal intervals around the geometric center of the end plates 4, and the axes of the three sliding grooves mutually form 120 degrees.
Specifically, two vibrators 1A, 1C are arranged upstream and 1B are arranged downstream, one bottom edge of the three vibrators 1A, 1B and 1C is arranged perpendicular to the water flow direction, the vertex angle direction opposite to the side edge perpendicular to the water flow direction in the three vibrators 1A, 1B and 1C faces the downstream direction, and the three vibrators 1A, 1B and 1C can synchronously slide inwards and outwards radially around the geometric center of the end plate 4 along the three sliding grooves 3A, 3B and 3C, but the angles of the three vibrators relative to the water flow 5 direction are not changed in any way.
Referring to fig. 3 and fig. 4, specifically, when vibration needs to be increased, three vibrators 1A, 1B and 1C are synchronously concentrated to the center through sliding shafts 2A, 2B and 2C, an integral triangular prism is finally formed, when water flow 5 passes through vibrators 1A, 1B and 1C, vortexes 6A, 6B and 6C are alternately generated above and below the vibrators to fall off, and finally, the vibrators 1A, 1B and 1C are driven to vibrate up and down synchronously, so that the vibration intensity is high, and the electric energy utilization effect is excellent.
When vibration is required to be reduced under the condition of shutdown or other conditions, the three vibrators 1A, 1B and 1C synchronously slide outwards through the sliding shafts 2A, 2B and 2C, Y-shaped flow channels are formed among the three vibrators 1A, 1B and 1C, vortex 6A and 6B can be generated at sharp angle positions when water flow 5 passes through the vibrators 1A and 1C, and meanwhile, the water flow 5 can flow through the Y-shaped flow channels formed among the vibrators 1A, 1B and 1C, so that falling of the vortex 6A and 6B is influenced, the intensity of vibration is further influenced, and the vibrators 1A, 1B and 1C do not vibrate any more, and electric energy utilization is not carried out.
In the embodiment, the vibrator is suitable for a flow velocity range of 0.2-1.5 m/s, and the maximum power can reach 100W.
Example 2
The embodiment provides a flow-induced vibration power generation vibrator capable of controlling the vibration size, which consists of three vibrators 1A, 1B, 1C, a sliding shaft, sliding grooves 3A, 3B, 3C and an end plate 4. Wherein, the vibrators 1A, 1B and 1C are identical regular triangular prisms, the side length of the section is 10cm, the length of the vibrator vertical to the water flow direction is 1m, and the vibrator can be made of steel materials;
slide shafts are arranged at the top and bottom of the three vibrators 1A, 1B and 1C from the gravity center position to one of the vertex angles, and the slide shafts are fixedly connected with the vibrators 1A, 1B and 1C respectively.
The three vibrators 1A, 1B and 1C are arranged at two ends perpendicular to the water flow direction, the cross section of the end plate 4 can be round, the radius of the cross section is 20cm, the thickness of the end plate 4 is 1cm, the end plate 4 is made of steel, the end plate 4 is connected with a transmission structure of the flow-induced vibration power generation system, three sliding grooves 3A, 3B and 3C are arranged in the end plate 4, the length of the end plate is 10cm, sliding shafts at two ends of the three vibrators 1A, 1B and 1C are embedded into the sliding grooves 3A, 3B and 3C to form sliding connection, the three vibrators 1A, 1B and 1C are restrained by the sliding shafts to slide in the sliding grooves, the three vibrators 1A, 1B and 1C are arranged radially at equal intervals around the geometric center of the end plate 4, and the axes of the three sliding grooves are 120 degrees each other.
Specifically, two vibrators 1A, 1C are arranged upstream and 1B are arranged downstream, one bottom edge of the three vibrators 1A, 1B and 1C is arranged perpendicular to the water flow direction, the vertex angle direction opposite to the side edge perpendicular to the water flow direction in the three vibrators 1A, 1B and 1C faces the downstream direction, and the three vibrators 1A, 1B and 1C can synchronously slide inwards and outwards radially around the geometric center of the end plate 4 along the three sliding grooves 3A, 3B and 3C, but the angles of the three vibrators relative to the water flow 5 direction are not changed in any way.
The invention is not limited to the embodiments described above. The above description of specific embodiments is intended to describe and illustrate the technical aspects of the present invention, and is intended to be illustrative only and not limiting. Numerous specific modifications can be made by those skilled in the art without departing from the spirit of the invention and scope of the claims, which are within the scope of the invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310622212.2A CN116658348B (en) | 2023-05-30 | 2023-05-30 | Flow-induced vibration power generation vibrator capable of controlling vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310622212.2A CN116658348B (en) | 2023-05-30 | 2023-05-30 | Flow-induced vibration power generation vibrator capable of controlling vibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116658348A CN116658348A (en) | 2023-08-29 |
| CN116658348B true CN116658348B (en) | 2025-09-09 |
Family
ID=87709149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310622212.2A Active CN116658348B (en) | 2023-05-30 | 2023-05-30 | Flow-induced vibration power generation vibrator capable of controlling vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116658348B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107529616A (en) * | 2017-08-04 | 2018-01-02 | 天津大学 | A kind of variable damping device and method suitable for Flow vibration experiment |
| CN109915301A (en) * | 2019-04-01 | 2019-06-21 | 西北工业大学 | Rigid coupled oscillator system and energy conversion system suitable for fluid power conversion |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5376326B2 (en) * | 2010-01-06 | 2013-12-25 | 公立大学法人大阪府立大学 | Fluid power generation apparatus and power generation method |
| KR101284106B1 (en) * | 2011-11-29 | 2013-07-10 | 한국해양과학기술원 | Simple reciprocating pivot-rotational vortex induced vibration energy extraction device and vortex induced vibration energy extraction method using the device |
| NO343819B1 (en) * | 2017-04-07 | 2019-06-11 | Momentum Tech As | Method for vibration damping of and vibration damper assembly for semi-submerged or submerged elongated structure |
| CN112065642B (en) * | 2020-09-14 | 2022-05-13 | 哈尔滨工程大学 | An accompanying wave energy power generation device applied to floating equipment |
| CN113882991B (en) * | 2021-10-25 | 2024-07-09 | 哈尔滨工程大学 | Inertial wave energy device capable of supplying power for ocean drifting floating body |
| CN114776516B (en) * | 2022-01-25 | 2023-07-21 | 江苏科技大学 | A flow-induced vibration ocean current power generation device with adjustable vibrator array |
-
2023
- 2023-05-30 CN CN202310622212.2A patent/CN116658348B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107529616A (en) * | 2017-08-04 | 2018-01-02 | 天津大学 | A kind of variable damping device and method suitable for Flow vibration experiment |
| CN109915301A (en) * | 2019-04-01 | 2019-06-21 | 西北工业大学 | Rigid coupled oscillator system and energy conversion system suitable for fluid power conversion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116658348A (en) | 2023-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205445884U (en) | Resistance type hydraulic turbine and hydroelectric generation system | |
| Abiru et al. | Study on a flapping wing hydroelectric power generation system | |
| Guang et al. | Hydrodynamic performance of a vertical-axis tidal-current turbine with different preset angles of attack | |
| Aravind et al. | A novel magnetic levitation assisted vertical axis wind turbine—Design procedure and analysis | |
| Zhao et al. | Study on variable pitch strategy in H-type wind turbine considering effect of small angle of attack | |
| WO2014194831A1 (en) | Vertical shaft hydraulic power generation device | |
| Zhang et al. | The hydrodynamic characteristics of free variable-pitch vertical axis tidal turbine | |
| CN103762896A (en) | Device for collecting low-speed flow kinetic energy through vortex induced vibration of two columns arrayed in series | |
| CN116658348B (en) | Flow-induced vibration power generation vibrator capable of controlling vibration | |
| Wang et al. | Study on fast prediction method of hydrodynamic load of floating horizontal axis tidal current turbine with pitching motion under free surface | |
| CN113818984A (en) | Karman vortex street power generation device of underwater cylindrical spoiler | |
| CN209569123U (en) | Vertical axis wind-mill generator | |
| CN203394680U (en) | Offshore oscillating water column power generation device | |
| CN205714570U (en) | Tidal current energy generating equipment and kuppe thereof | |
| EP3315767A1 (en) | Modular two-way power generation device using tidal energy | |
| CN103762894B (en) | A kind of device utilizing bicylindrical Flow vibration arranged side by side to collect electric energy | |
| Abiru et al. | Experimental study on a cascade flapping wing hydroelectric power generator | |
| CN211008947U (en) | Wind speed transmission for wind generating set | |
| Jiang et al. | Finite element vortex method for hydrodynamic analysis of vertical axis cycloidal tidal turbine | |
| CN216306116U (en) | Reciprocating type fluid-driven efficient kinetic energy utilization blade device | |
| Derakhshandeh et al. | An intelligent IoT-based control system for harnessing hydropower energy from wake induced vibration | |
| CN206268044U (en) | A kind of new photovoltaic control system for automatically adjusting of realizing supplying water by frequency converter | |
| CN208472569U (en) | Non-uniform surface wind-resistant stay cables | |
| Ogawa et al. | Study on horizontal type turbine driven by longitudinal vortex system | |
| CN108301325B (en) | Non-uniform surface wind-resistant cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |