CN110397698A - Offshore wind farm device any direction shock absorption system - Google Patents
Offshore wind farm device any direction shock absorption system Download PDFInfo
- Publication number
- CN110397698A CN110397698A CN201910648133.2A CN201910648133A CN110397698A CN 110397698 A CN110397698 A CN 110397698A CN 201910648133 A CN201910648133 A CN 201910648133A CN 110397698 A CN110397698 A CN 110397698A
- Authority
- CN
- China
- Prior art keywords
- wind farm
- offshore wind
- shock absorption
- absorption system
- farm device
- 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.)
- Pending
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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
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
Abstract
Offshore wind farm device any direction shock absorption system, including shell, absorbing component, absorbing component are set in shell；The absorbing component includes mass block, damping block, and mass block is set in shell, and the horizontal direction in mass block, vertical direction, short transverse are symmetrical arranged the damping block for vibration damping, and damping block is connected with mass block.Electromagnetic energy acquisition component includes coil and magnet, and coil is arranged in opposite two sides outside the shell, and absorbing component, between coil, magnet is mounted on mass block.The present invention has many advantages, such as that structure is simple, vibration absorbing performance is good.The invention belongs to marine power generation vibration control technology fields.
Description
Technical field
The invention belongs to marine power generation vibration control technology fields, and in particular to a kind of offshore wind farm device any direction suction
Vibrating system.
Background technique
Wind energy is just increasingly taken seriously as a kind of clean renewable energy.Marine wind resource more horn of plenty,
Sea area is in extensive range simultaneously, and across the sea can be to avoid visual impact and noise pollution by wind energy conversion system installation, therefore people open
Begin to pay close attention to and implements marine wind power generation.Currently, generalling use offshore floating type assembling at sea to generate electricity.Sea
Foreign environment is sufficiently complex, and the structure of offshore floating type blower subjects a variety of random outer with spatial variations at any time in marine environment
Portion's load, such as wind, wave, sea ice, or even sometimes also by the effect of earthquake.Existing offshore floating type blower is by blade, machine
The multi-sections such as body, pylon, floating body platform, anchor chain are grouped as, by wind field,
The collective effects such as wave, trend, stress is extremely complex, and vibration characteristics is more complicated.Therefore how sea turn is offset
Stress, the vibration bring of electric installation are unstable, to guarantee the stability of offshore wind farm device, to guarantee that blower can be steady
The operation of safety, domestic and international scientific research personnel have carried out numerous studies work for stress, vibration this aspect of offshore wind farm device
Make, and proposes a variety of vibration-reducing control methods.Common vibration control strategy has passive control, semi- active control and actively controls
System.Offshore wind farm device is a 6DOF system because by extraneous load complexity, and the model studied now is excessively simple
Change, when research only considered the vibration of single-degree-of-freedom when simple scenario causes single stress, and can not be to offshore wind farm device
Pitching, heaving etc. are main across the sea and more complicated forms of motion is analyzed.Therefore study it is relatively simple, pitching,
Under the forms of motion such as heaving, the stress of offshore wind farm device and the result error of vibration analysis are larger, and then lead to the suction taken
Vibration means are ineffective, and the stability of offshore wind farm device is poor, and power generation performance is affected.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of offshore wind farm device any direction shock absorption system, it has structure letter
Singly, the advantages that vibration absorbing performance is good.
Offshore wind farm device any direction shock absorption system, including shell, absorbing component, absorbing component are set in shell；
The absorbing component includes mass block, damping block, and mass block is set in shell, and in the horizontal direction of mass block, vertical side
It is symmetrical arranged the damping block for vibration damping to, short transverse, and damping block is connected with mass block.Using this structure, by matter
Horizontal direction, vertical direction, short transverse on gauge block are symmetrical arranged damping block, to realize multiple degrees of freedom, multidirectional suction
Vibration, vibration damping, thus can effectively absorbing, vibration damping in more complicated environment and forced vibration at sea, vibration absorbing performance is good.
As a preference, damping block includes electrorheological elastomer and stiffness variable spring.Using this structure, electric current becomes bullet
Property body be made of er material, er material is the intellectual material that a kind of rheological property can be controlled by extra electric field, In
Under the action of extra electric field, has many advantages, such as that fast response time, operating power consumption are low, actuating power variation range is big, become using electric current
Rheological behavior of the elastomer under electric field action designs simple adaptive damping component；Stiffness variable spring refers to the rigid of spring
Degree can carry out the size of control rigidity according to the actual situation, realize active control；It, can be more by the damping block being composed
The vibration damping, cushion performance of the two are fully played, and then further promotes the vibration absorbing performance of this shock absorption system.
As a preference, mass block is cuboid.Using this structure, mass block is easily fabricated, installs, and is also convenient for simultaneously
Installation connection damping block.
As a preference, electrorheological elastomer and the stiffness variable spring are 3 pairs, cuboid front-back,
A pair of of electrorheological elastomer and a pair of of stiffness variable spring are symmetrical arranged on left and right face, top and bottom.Using this structure, can protect
Under conditions of hindering absorbing component multi-degree of freedom vibration reduction, simplify the quantity and cloth of electrorheological elastomer and the stiffness variable spring
It sets, simplifies structure, saved cost.
As a preference, mass block is spherical.Using this structure, mass block is easily fabricated, installs.
As a preference, further including that vibration adjusts component, it includes sensor, control module, sensing that vibration, which adjusts component,
Device is installed in the rack tower of wind generator, and sensor and control module electrical connection, control module are connected with damping block.Using
This structure acquires signal by sensor and passes to control module, and control module acts on damping block after sending control letter, makes
Stiffness variable spring and electrorheological elastomer are deformed, to change the stress state or damping of structural material, and then more preferable
Ground controls the motion amplitude of mass block, is adaptive to the vibration of extraneous factor generation, reaches and preferably reaches vibration damping, absorbing effect
Fruit.
As a preference, mass block is made of carbon steel material.
As a preference, further include electromagnetic energy acquisition component, electromagnetic energy acquisition component be installed on shell exterior and
On absorbing component.Using this structure, directly uses or store by electromagnetic induction principle acquisition electricity and is spare.
As a preference, shell is in hollow cuboid, absorbing component is placed in the intracorporal middle part hollow part of rectangle.Using
This structure, the structure of shell is simple, regular, is not only conducive to install absorbing component and electromagnetic energy acquisition component outside the shell,
It is also convenient in the cabin that entire shock absorption system is installed on to offshore wind farm device simultaneously.
Advantages of the present invention: the present invention is based on the working principles of TMD mechanism (tuned mass damper, TMD), by mass block
On horizontal direction, vertical direction, short transverse be symmetrical arranged damping block, to realize multiple degrees of freedom, multidirectional absorbing, subtract
Vibration, thus can effectively absorbing, vibration damping in more complicated environment and forced vibration at sea, vibration absorbing performance is good；Also, in quality
It is respectively provided with electrorheological elastomer and stiffness variable spring on each face of block, therefore further promotes absorbing, damping property；This hair
Bright also coil is arranged in any two sides outside the shell, and installs magnet on the mass block between two coils, to pass through magnetic
The electricity that iron and coil relative motion generate, and electricity is directly used or stored is spare.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention.
Fig. 2 is the structural schematic diagram of absorbing component in one embodiment of the invention.
Fig. 3 is the schematic diagram of present invention installation offshore wind farm device.
Fig. 4 is control flow schematic diagram of the invention.
Wherein, 1- floating platform, 2- machine pylon, 3- blade, 4- cabin, 5- offshore wind farm device any direction absorbing system
System, 6- stiffness variable spring, 7- electrorheological elastomer, 8- mass block, 9- magnet, 10- coil, 11- shell, 12- absorbing component.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawing.
Offshore wind farm device any direction shock absorption system, it includes shell, absorbing component, electromagnetic energy acquisition component, is inhaled
Vibration component is set in shell, and electromagnetic energy acquisition component is set on shell and absorbing component.When offshore wind farm device is in feelings
When receiving dynamic excitation generation vibration in the complicated sea of condition, shock absorption system generates the vibration of identical freedom degree, absorbing group therewith
Part generates the vibration of freedom degree opposite with offshore wind farm device inside the shell, so that the vibration of offshore wind farm device be made to decay even
It offsets, has the function that absorbing, energy dissipating, so that offshore wind farm device is steadily run.Electromagnetic energy acquisition component is used for
Acquisition electricity directly uses or stores spare.Electromagnetic energy acquisition component utilizes electromagnetic induction principle, electromagnetic energy acquisition component
Cause internal electric field to change under absorbing component situation of movement, causes electromagnetic energy acquisition component to generate electricity, and will adopt
The electricity of collection directly uses or lays in use.
Shell, which should be internal, has certain space, for installing absorbing component, electromagnetic energy acquisition component.For example,
It can be hexahedron, spherical etc., and be hollowed out inside hexahedron or spherical, to form hollow hexahedron, spherical etc..
In the present embodiment, shell is hollow cuboid (cuboid or square), the boring of cuboid, inside cuboid
Hollow part is installed by absorbing component and electromagnetic energy acquisition component.
Absorbing component is as depicted in figs. 1 and 2.Absorbing component includes mass block, damping block, and damping block is respectively along mass block
Horizontal direction (i.e. X-axis), vertical direction (i.e. Y-axis), short transverse (i.e. Z axis) be symmetrically disposed on mass block.Mass block can
For cuboid, spherical etc., the mass block of cuboid shape is used in the present embodiment.Mass block is made of carbon steel material, therefore
It is easy to inside the shell as shock absorption system vibrates together.Damping block is arranged on six faces of cuboid, is parallel to each other two-by-two
Face on damping block be symmetrical arranged.Damping block includes stiffness variable spring and electrorheological elastomer.In the present embodiment, in square
A stiffness variable spring and electrorheological elastomer are arranged on each face of the mass block of body shape.
As shown in Figure 1, electromagnetic energy acquisition component includes circuit board, battery, magnet and coil.Structure is subtracted in system
While vibration, the electric energy generated by magnet and coil relative motion is collected by electromagnetic energy acquisition component, it can be in system electricity
Pond electricity is finished and provides electric energy when can not replace in time.Coil installs the opposite two sides of shell exterior, the present embodiment middle line
Circle is six, i.e., a coil is respectively installed in each side outside cuboid.In the left and right of mass block, front and back, six upper and lower
Magnet is fixedly installed on face, and absorbing component, magnet are between coil.Coil and circuit board electrical connection, circuit board and
Battery electrical connection；Circuit board, battery are identical as the electric power storage of existing Chargeable torch on the market, discharge principle.Work as production
When raw electricity, battery is transferred to regard to electric energy by circuit board, by battery stores electricity energy, is finished in the battery capacity of system
When can not replace in time again, the electric energy of battery storage can discharge the electric energy of storage, for system use.Work as wind generator
Vibration is generated, when vibration displacement occurs for mass block, the magnet on mass block generates vibration and relative motion occurs with magnetic induction coil,
Magnetic induction coil cutting magnetic line generates induced current.Magnetic induction intensity is bigger, and the electromagnetic force of generation is also bigger.
As shown in figure 3, on the installation of this shock absorption system and offshore wind farm device.Offshore wind farm device include floating platform,
Machine pylon, cabin, blade etc., floating platform is placed on sea, and floating platform is to support entire offshore wind farm device；Machine tower
Frame is installed on floating platform, and cabin is installed on the top of machine pylon, and blade rotating type is installed on the outer end of cabin.Shock absorption system
It is installed in cabin.When marine complicated external environment motivates offshore wind farm device, offshore wind farm device generates vibration.It is installed on
Shock absorption system in cabin generates the vibration of identical freedom degree therewith, and absorbing component generates the vibration of opposite freedom degree by damping block
It is dynamic, it is even offset to decay to the vibration of offshore wind farm device.
Further, this shock absorption system further includes that vibration adjusts component, and it includes sensor, control mould that vibration, which adjusts component,
Block.Sensor is installed in rack tower, and sensor and control module electrical connection.Control module controls damping block, damping block packet
It includes er material and constitutes electrorheological elastomer.It is adjusted in component in vibration, sensor carries out the vibration of offshore wind farm device
Monitoring, damping block accurately acts under control system control, to change integrally-built vibrational state.Offshore wind farm device by
Certain vibration can be generated in being acted on by external force, the sensor in machine pylon collects the signal of vibration, by what is experienced
Vibratory response is transmitted to control module, generates corresponding control signal by the calculating of control module, control signal acts on
Damping block converts electrical energy into mechanical energy, is deformed stiffness variable spring and electrorheological elastomer, to change structural wood
The stress state or damping of material, and then the motion amplitude of mass block is preferably controlled, it is adaptive to the vibration of extraneous factor generation,
Preferably reach vibration damping, shock attenuation result.
In the present embodiment, controller uses the single-chip microcontroller of model MSC1211.
Above-described embodiment is to invent preferable embodiment, but embodiments of the present invention are not by the limit of above-described embodiment
System, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (9)
1. offshore wind farm device any direction shock absorption system, it is characterised in that: including shell, absorbing component, the setting of absorbing component
In in shell；The absorbing component includes mass block, damping block, and mass block is set in shell, and in the level side of mass block
To, vertical direction, short transverse be symmetrical arranged the damping block for vibration damping, and damping block is connected with mass block.
2. offshore wind farm device any direction shock absorption system according to claim 1, it is characterised in that: the damping block includes
Electrorheological elastomer and stiffness variable spring.
3. offshore wind farm device any direction shock absorption system according to claim 2, it is characterised in that: the mass block is square
Body.
4. offshore wind farm device any direction shock absorption system according to claim 3, it is characterised in that: the electric current becomes elasticity
Body and the stiffness variable spring are 3 pairs, and a pair of of electricity is symmetrical arranged on the front-back of cuboid, left and right face, top and bottom
Magnetorheological elastomer and a pair of of stiffness variable spring.
5. offshore wind farm device any direction shock absorption system according to claim 2, it is characterised in that: the mass block is ball
Body.
6. offshore wind farm device any direction shock absorption system according to claim 2, it is characterised in that: further include that vibration is adjusted
Component, it includes sensor, control module that vibration, which adjusts component, and sensor is installed in the rack tower of wind generator, and sensor
It is electrically connected with control module, control module is connected with damping block.
7. -5 any offshore wind farm device any direction shock absorption system according to claim 1, it is characterised in that: further include electricity
Magnetic energy acquisition component, electromagnetic energy acquisition component are installed in shell exterior and absorbing component.
8. according to any offshore wind farm device any direction shock absorption system of claim 7, it is characterised in that: electromagnetic energy is adopted
Collection component includes coil, magnet, circuit board, battery, and coil, magnet peace is arranged in each opposite two sides outside the shell
On mass block, and absorbing component, between coil, coil and circuit board electrical connection, circuit board and battery are electrically connected.
9. offshore wind farm device any direction shock absorption system according to claim 1, it is characterised in that: the shell is in hollow
Cuboid, absorbing component is placed in the intracorporal middle part hollow part of rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648133.2A CN110397698A (en) | 2019-07-18 | 2019-07-18 | Offshore wind farm device any direction shock absorption system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648133.2A CN110397698A (en) | 2019-07-18 | 2019-07-18 | Offshore wind farm device any direction shock absorption system |
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| CN110397698A true CN110397698A (en) | 2019-11-01 |
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ID=68324473
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| CN201910648133.2A Pending CN110397698A (en) | 2019-07-18 | 2019-07-18 | Offshore wind farm device any direction shock absorption system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178117A (en) * | 2020-11-04 | 2021-01-05 | 兰州理工大学 | Offshore floating type wind turbine vibration damper and connection method |
| CN113217571A (en) * | 2021-04-30 | 2021-08-06 | 陕西国防工业职业技术学院 | Electromechanical device damping device |
| CN113775495A (en) * | 2021-09-14 | 2021-12-10 | 金华职业技术学院 | A break away from cylinder energy recuperation device for combine |
| CN113864399A (en) * | 2021-10-20 | 2021-12-31 | 西南交通大学 | Self-adaptive order tracking vibration reduction metamaterial shaft structure |
| CN114607646A (en) * | 2022-03-02 | 2022-06-10 | 豪派福风机科技(苏州)有限公司 | Dynamic vibration absorber for industrial fan |
| CN114876995A (en) * | 2022-02-08 | 2022-08-09 | 上海交通大学 | Multidimensional self-adaptive vibration and noise control device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146234A (en) * | 1994-04-18 | 1997-03-26 | 美国3M公司 | Tuned mass damper |
| GB2316732A (en) * | 1996-08-24 | 1998-03-04 | Mecon Limited | Vibration reduction |
| CN1231024A (en) * | 1996-09-23 | 1999-10-06 | 明尼苏达矿业和制造公司 | Tuned mass damper |
| CN102493572A (en) * | 2011-12-27 | 2012-06-13 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Adjustable damping energy storage type tuned mass damper |
| CN203049822U (en) * | 2012-12-05 | 2013-07-10 | 上海英谷桥梁科技有限公司 | Three-dimensional shock absorption damper |
| CN104421107A (en) * | 2013-08-22 | 2015-03-18 | 国家电网公司 | Deep-sea floated wind power generator unit |
| CN108087483A (en) * | 2017-12-13 | 2018-05-29 | 东北大学 | A kind of method and damper of MR damper tuning quality raising frequency energy regenerative |
-
2019
- 2019-07-18 CN CN201910648133.2A patent/CN110397698A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146234A (en) * | 1994-04-18 | 1997-03-26 | 美国3M公司 | Tuned mass damper |
| GB2316732A (en) * | 1996-08-24 | 1998-03-04 | Mecon Limited | Vibration reduction |
| CN1231024A (en) * | 1996-09-23 | 1999-10-06 | 明尼苏达矿业和制造公司 | Tuned mass damper |
| CN102493572A (en) * | 2011-12-27 | 2012-06-13 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Adjustable damping energy storage type tuned mass damper |
| CN203049822U (en) * | 2012-12-05 | 2013-07-10 | 上海英谷桥梁科技有限公司 | Three-dimensional shock absorption damper |
| CN104421107A (en) * | 2013-08-22 | 2015-03-18 | 国家电网公司 | Deep-sea floated wind power generator unit |
| CN108087483A (en) * | 2017-12-13 | 2018-05-29 | 东北大学 | A kind of method and damper of MR damper tuning quality raising frequency energy regenerative |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178117A (en) * | 2020-11-04 | 2021-01-05 | 兰州理工大学 | Offshore floating type wind turbine vibration damper and connection method |
| CN113217571A (en) * | 2021-04-30 | 2021-08-06 | 陕西国防工业职业技术学院 | Electromechanical device damping device |
| CN113775495A (en) * | 2021-09-14 | 2021-12-10 | 金华职业技术学院 | A break away from cylinder energy recuperation device for combine |
| CN113775495B (en) * | 2021-09-14 | 2023-03-10 | 金华职业技术学院 | Threshing cylinder energy recovery device for combine harvester |
| CN113864399A (en) * | 2021-10-20 | 2021-12-31 | 西南交通大学 | Self-adaptive order tracking vibration reduction metamaterial shaft structure |
| CN114876995A (en) * | 2022-02-08 | 2022-08-09 | 上海交通大学 | Multidimensional self-adaptive vibration and noise control device |
| CN114607646A (en) * | 2022-03-02 | 2022-06-10 | 豪派福风机科技(苏州)有限公司 | Dynamic vibration absorber for industrial fan |
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Application publication date: 20191101 |