CN115435035B - Bidirectional tuning liquid column damper and offshore wind turbine generator system using same - Google Patents
Bidirectional tuning liquid column damper and offshore wind turbine generator system using same Download PDFInfo
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- CN115435035B CN115435035B CN202210996415.3A CN202210996415A CN115435035B CN 115435035 B CN115435035 B CN 115435035B CN 202210996415 A CN202210996415 A CN 202210996415A CN 115435035 B CN115435035 B CN 115435035B
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- 239000007788 liquid Substances 0.000 title claims abstract description 88
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 16
- 238000013016 damping Methods 0.000 claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 23
- 238000010248 power generation Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000011796 hollow space material Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 230000004044 response Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005789 organism growth Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 230000010356 wave oscillation Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
-
- 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
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
-
- 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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
-
- 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
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/04—Frequency effects
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
Abstract
A bidirectional tuned liquid column damper comprises damping components arranged in an array and a main cylinder arranged in the middle of the damping components; the damping component comprises two adjacent oscillating units and two adjacent communicating units, the oscillating units and the communicating units are communicated with the main cylinder, and the main cylinder, the oscillating units and the communicating units are filled with liquid; the bottoms of the oscillating unit and the communicating unit are respectively provided with a horizontal stay rod communicated with the main cylinder body, and the oscillating unit and the communicating unit are respectively provided with an inclined strut communicated with the main cylinder body, and the inclined struts are arranged above the horizontal stay rods; compared with the prior art, the U-shaped structure formed by the reinforced chord and the horizontal stay bar at the jacket platform is used as the main structure of the damper by combining the characteristics of the conduit frame type offshore wind turbine structure, so that the bidirectional high-frequency tuning function is realized, and meanwhile, additional installation space is not needed.
Description
Technical Field
The invention relates to the technical field of ocean engineering vibration control, in particular to a bidirectional tuned liquid column damper and an offshore wind generating set applying the same.
Background
Offshore wind energy is one of renewable energy sources, and has profound significance for improving the energy system structure and protecting the ecological environment.
Because of the small hydrodynamic load, the conduit frame foundation becomes the most suitable foundation structure of the offshore wind farm in the offshore area of China. However, as the trend of the construction of offshore wind farms is to select wind power generation sets with gradually larger sizes and ultra-high power, the wind power generation sets on the conduit frame type have more complex environmental conditions, and higher requirements are put on the safety design and normal operation of the wind power generation sets on the conduit frame type.
In the prior art, the passive vibration damper can obviously reduce the structural response of the offshore wind turbine and improve the fatigue life and ultimate bearing capacity of the offshore wind turbine structure under the action of random loads such as wind, waves, earthquakes and the like, but at present, the passive vibration damper applied to the conduit frame type offshore wind turbine structure still has the following defects:
(1) Because of the special structural form of the conduit frame type offshore wind turbine, the installation space of the passive vibration damper is greatly limited, and the conventional vibration damper is mostly arranged in a cabin of a wind turbine, so that only the motion response mainly of a first-order vibration mode can be effectively controlled, and the motion response controlled by a high-order mode cannot be reduced.
(2) Due to the randomness of wind and wave loads, the dynamic response of the offshore wind turbine structure is often obvious in a plurality of horizontal directions at the same time, and the vibration reduction effect of the passive vibration reduction device arranged along a certain direction is weakened.
(3) In the service period of the offshore wind turbine structure, the natural frequency of the offshore structure can be obviously changed due to factors such as marine organism growth, foundation bottom flushing, structural damage under the action of earthquake and the like.
The passive vibration damper is required to have the characteristic of tuning bandwidth, and can not tune a certain fixed frequency, and can also tune the bandwidth correspondingly according to the change of the natural frequency of the wind turbine so as to achieve the effect of damping the offshore wind turbine.
Chinese patent No. CN108952287a discloses a two-dimensional tuned liquid column damper capable of automatically adjusting damping, which comprises a tubular water tank, the tubular water tank includes first U-shaped tubular water tank, second U-shaped tubular water tank, first linear tubular water tank and second linear tubular water tank, first U-shaped tubular water tank, second U-shaped tubular water tank respectively with first linear tubular water tank, second linear tubular water tank fixed connection, the junction of first U-shaped tubular water tank, second U-shaped tubular water tank and first linear tubular water tank, second linear tubular water tank all trompil and guarantee that the inside of first U-shaped tubular water tank, second U-shaped tubular water tank, first linear tubular water tank and second linear tubular water tank link up, there is water and adjustable water hole in the tubular water tank.
The tuned liquid column damper disclosed by the above is used for controlling the damping effect of the tuned liquid column damper through the vibration signal and the damping system, and when the damping regulation and control of the offshore wind turbine are needed, the power on and the control of the tuned liquid column damper are difficult to realize, and the tuned liquid column damper is not suitable for the damping regulation and control of the offshore wind turbine.
Therefore, the development of the passive vibration damper which can carry out high-order frequency bidirectional tuning, vibration damping frequency bandwidth and high cost performance on the conduit frame type offshore wind turbine has very important engineering significance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the bidirectional tuned liquid column damper which has wide damping frequency, does not need additional installation space and has high cost performance and is suitable for the offshore wind turbine generator system.
In order to achieve the above object, the present invention adopts the following technical scheme: a bidirectional tuned liquid column damper comprises damping components arranged in an array and a main cylinder arranged in the middle of the damping components; the damping component comprises two adjacent oscillating units and two adjacent communicating units, the oscillating units and the communicating units are communicated with the main cylinder, and the main cylinder, the oscillating units and the communicating units are filled with liquid; the bottoms of the oscillating unit and the communicating unit are respectively provided with a horizontal stay rod communicated with the main cylinder body, and the oscillating unit and the communicating unit are respectively provided with an inclined strut communicated with the main cylinder body, and the inclined struts are arranged above the horizontal stay rods; a baffle plate arranged along the section of the horizontal stay bar is arranged in the horizontal stay bar of the oscillating unit, and an orifice is formed on the baffle plate; the oscillating unit and the communicating unit are symmetrically arranged by taking the main cylinder body as a center.
As a preferable scheme of the invention, the communication unit and the oscillating unit are hollow reinforcing chords with sealing structures, and the reinforcing chords are provided with sealable liquid injection ports.
As a preferable scheme of the invention, the main cylinder body and the horizontal stay bars are hollow structures, and liquid freely flows between the damping component and the main cylinder body.
As a preferred embodiment of the present invention, the ratio of the cross-sectional area of the reinforcing chord of the oscillating unit to the cross-sectional area of the corresponding horizontal stay is greater than 1.
As a preferred embodiment of the present invention, at least one orifice is formed on the separator, and the orifices are arranged in an array along the surface of the separator.
As a preferred solution of the invention, the length of the horizontal stay is greater than 0.8 times the height of the liquid in the reinforcement chord of the corresponding oscillating unit.
As a preferred embodiment of the present invention, the liquid is at least one steady state liquid.
As a preferable mode of the present invention, the adjacent oscillating units are divided into a first oscillating unit and a second oscillating unit, and the first oscillating unit and the second oscillating unit form a U-shaped structure communicating with the main cylinder.
The utility model provides an offshore wind generating set, includes two-way tuning liquid column attenuator, including setting up a plurality of chords on the mud face in the sea, be equipped with mud brace between the adjacent chord, and be equipped with the X type bracing that is connected between the adjacent chord, two-way tuning liquid column attenuator sets up in the chord top, and strengthens the chord setting in corresponding chord top, is equipped with the tower section of thick bamboo on the main barrel, is equipped with upper portion fan on the tower section of thick bamboo.
Compared with the prior art, the invention has the beneficial effects that:
1. by combining the characteristics of the conduit frame type offshore wind turbine structure, the U-shaped structure formed by the reinforcing chord and the horizontal stay bar at the jacket platform is used as the main body structure of the damper, so that the bidirectional high-frequency tuning function is realized, and meanwhile, an additional installation space is not required;
2. the damper can tune for structural high-order frequency in a certain range, and solves the problem that the traditional damper can only perform vibration control for single tuning frequency.
3. The orifice baffle is arranged in the U-shaped structure horizontal stay bar, so that head loss is generated, and a certain energy consumption effect is achieved.
Drawings
FIG. 1 is a state of use of the present invention;
FIG. 2 is a schematic structural diagram of a bi-directionally tuned liquid column damper
FIG. 3 is a front view of a bi-directionally tuned liquid column damper;
FIG. 4 is a top view of a bi-directional tuned liquid column damper;
FIG. 5 is a schematic view of the structure of the separator;
reference numerals: chord member 1, mud support 2, X-shaped diagonal brace 3, reinforcing chord member 4, horizontal brace 5, main cylinder 6, diagonal brace 7, tower 8, upper fan 9, first oscillating unit 10, second oscillating unit 10a, liquid 11, liquid injection port 12, partition plate 13 and orifice 14.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-5, a bidirectional tuned liquid column damper comprises damping components arranged in an array and a main cylinder 6 arranged in the middle of the damping components; the damping component comprises two adjacent oscillating units and two adjacent communicating units, the oscillating units and the communicating units are communicated with the main cylinder 6, and the main cylinder 6, the oscillating units and the communicating units are filled with liquid 11; the bottoms of the oscillating unit and the communicating unit are respectively provided with a horizontal stay bar 5 communicated with the main cylinder 6, the oscillating unit and the communicating unit are respectively provided with an inclined strut 7 communicated with the main cylinder 6, and the inclined struts 7 are arranged above the horizontal stay bars 5; a baffle plate 13 arranged along the section of the horizontal stay bar 5 is arranged in the horizontal stay bar 5 of the oscillating unit, and an orifice 14 is formed on the baffle plate 13; the oscillation unit and the communication unit are symmetrically arranged with the main cylinder 6 as a center.
The communicating unit and the oscillating unit are hollow reinforcing chords 4 with sealing structures, a sealable liquid injection port 12 is formed on the reinforcing chords 4, the liquid injection port 12 is convenient for quantitatively injecting or discharging a certain amount of liquid 11, tuning is achieved on the control frequency with a certain bandwidth, and the liquid injection port 12 is plugged by an interference fit rubber plug or a clearance fit screw plug.
The main cylinder 6 and the horizontal stay 5 are hollow structures, and the liquid 11 freely flows between the damping component and the main cylinder 6.
The ratio of the cross section of the reinforcing chord 4 of the oscillating unit to the cross section of the corresponding horizontal stay bar 5 is larger than 1, the cross section of the reinforcing chord 4 is larger than the cross section of the horizontal stay bar 5, when the oscillating unit is affected by external force, the oscillation of the reinforcing chord 4 flows the liquid in the reinforcing chord 4 into the horizontal stay bar 5, so that the horizontal stay bar 5 is ensured to be filled, and the water wave oscillation in the horizontal stay bar 5 is prevented.
At least one orifice 14 is formed on the baffle 13, the orifices 14 are arrayed along the surface of the baffle 13, the number of the orifices 14 on the baffle 13 is set according to actual needs, one orifice 14 can be arranged on the baffle 13, the orifices 14 are located in the middle of the baffle 13 at the moment, a plurality of orifices 14 can also be arranged on the baffle 13, the orifices 14 are arrayed along the surface of the baffle 13 at the moment, adjacent orifices 14 are arranged at certain positions at intervals, and energy consumption of the liquid 11 under the flowing action of the liquid 11 is ensured.
The length of the horizontal stay 5 is greater than 0.8 times the height of the liquid 11 in the reinforcing chord 4 of the corresponding oscillating unit.
The liquid 11 is at least one stable liquid, the liquid 11 is set according to actual needs, pure water can be selected as the liquid 11, and stable liquids with different viscosities can be selected, for example: alcohol (ethanol), wood extract (methanol), diesel oil, gasoline, kerosene, vegetable oil, carbon tetrachloride, diethyl ether and ethyl acetate.
The adjacent oscillating units are divided into a first oscillating unit 10 and a second oscillating unit 10a, the first oscillating unit 10 and the second oscillating unit 10a form a U-shaped structure communicated with the main cylinder 6, the U-shaped structure is horizontally arranged, and serves as a main structure of the two-way tuning liquid column damper, liquid 11 can oscillate in the U-shaped structure, liquid gravity in the reinforcing chord 4 is used as restoring force to restrain motion response of the structure, and when the liquid 11 passes through the partition 13, head loss is generated to dissipate vibration energy.
The reinforcing chord 4 of the oscillating unit has a hollow space which is convenient for the liquid 11 to flow, and a certain space is reserved so that the liquid 11 can flow freely in the U-shaped structure formed by the first oscillating unit 10 and the second oscillating unit 10a and can not be fully filled with the liquid 11.
In the practical use process, the reinforcing chord member 4 and the horizontal brace 5 are used as the main body structure of the bidirectional tuning liquid column damper, one or more stable liquids 11 with different viscosity coefficients are injected into the main body structure, and when the structure vibrates, the liquid 11 in the damper can vibrate in the opposite direction to the structural motion. Then, the gravity of the liquid 11 in the reinforcing chord 4 is used as a restoring force, and the head loss caused when the liquid 11 flows through the partition plate 13 of the horizontal brace 5 is used for generating corresponding damping, so that the aim of reducing the structural motion response and the internal force is achieved. The control equation with variable cross-section tuned liquid damper is derived from the Lagrangian equation:
Wherein: a liquid 11 density; to strengthen the cross-sectional area of the chord 4; l is the total length of the center line of the liquid in the U-shaped structure; b is the distance between the central lines of the liquid in the U-shaped structure; Wherein, the method comprises the steps of, wherein, Is the sectional area of the horizontal stay bar 5; is the head loss coefficient; The amount of change in the elevation of the liquid in the reinforcement chord 4, the first derivative of the amount of change and the second derivative thereof, respectively.
The above equation is divided by mass to give:
the natural frequency of the damper can be obtained by the formula The method comprises the following steps:
The bidirectional tuning liquid column damper mainly aims to reduce the motion response controlled by the second-order equal-higher-order frequency of the offshore wind turbine, so that the natural frequency of the damper is reduced Adjusting to second-order equal-higher natural frequency of structureConsistent to achieve maximum vibration damping effect. Thus, the above formula is rewritten as:
The longer the length of the horizontal section of the tuned liquid column damper is, the more effective the damper can reduce the maximum response of the structure, and the length of the horizontal stay bar of the damper is more than 0.8 times of the total length of the water column in the variable-section U-shaped tube. According to the formula, after the size of the variable-section U-shaped pipe is determined by arranging the structural space of the damper according to the requirement, quantitative liquid is injected or discharged from the liquid injection hole, and the change of the total length L of the liquid column can be realized, so that the structural frequency in a certain range is realized And (5) performing tuned vibration reduction.
The baffle 13 of the horizontal stay bar 4 is provided with a certain number of orifices 14, and the liquid 11 flows through the orifices with the ratio ofThe head loss caused by the partition plate 13 generates damping, and dissipates vibration energy. Coefficient of head lossThe empirical formula is:
from the analysis, the damper has the advantages of wider tuning frequency band, high cost performance and no need of additional installation space while fully and reasonably utilizing the jacket platform structure to realize bidirectional high-frequency tuning.
The utility model provides an offshore wind generating set, includes two-way tuning liquid column attenuator, including setting up a plurality of chords 1 on the mud surface in the sea, be equipped with mud brace 2 between the adjacent chord 1, and be equipped with the X bracing 3 that are connected between the adjacent chord 1, two-way tuning liquid column attenuator sets up in chord 1 top, and strengthen chord 4 setting up in corresponding chord 1 top, is equipped with tower section of thick bamboo 8 on the main barrel 6, is equipped with upper portion fan 9 on the tower section of thick bamboo 8.
The mud surface in the sea is provided with 4 chords 1 which are spliced, the 4 chords 1 are arranged in two rows and two columns in an array manner, the 4 reinforcing chords 4 are fixedly connected to the tops of the corresponding chords 1 through welding or bolts respectively, and the tops of the 4 chords 1 are connected under the action of the horizontal stay 5 and the diagonal stay 7, so that the 4 chords 1 have better stability in the use process.
Mud brace 2 passes through welding or bolt fixed connection in chord member 1 bottom, and mud brace 2 sets up in aqueous, is equipped with 4 mud braces 2 that encircle into frame type structure between chord member 1 of 4 array arrangements, and X type bracing 3 includes a plurality of X type structures, and X type bracing 3 sets up along chord member 1's length direction, is formed with X type bracing 3 that encircle into frame type structure between chord member 1 of 4 array arrangements.
The two-way tuning liquid column damper is connected to the tops of the 4 chords 1 distributed in an array, the tower barrel 8 is fixedly connected to the tops of the main barrel 6 through bolts or welding, the upper fan 9 is fixedly connected to the tower barrel 8 through welding or bolts, and under the condition that the upper fan 9 is stressed, the two-way tuning liquid column damper damps the external force transmitted by the upper fan 9, so that the 4 chords 1 distributed in an array are better in stability in the use process.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more herein: chord member 1, mud stay 2, X-shaped diagonal stay 3, reinforcing chord member 4, horizontal stay 5, main cylinder 6, diagonal stay 7, tower 8, upper fan 9, first oscillating unit 10, second oscillating unit 10a, liquid 11, liquid injection port 12, partition 13, orifice 14, and the like, but the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (10)
1. The bidirectional tuned liquid column damper is characterized by comprising damping components which are arranged in an array manner and a main cylinder (6) which is arranged in the middle of the damping components; the damping component comprises two adjacent oscillating units and two adjacent communicating units, the oscillating units and the communicating units are communicated with the main cylinder body (6), and liquid (11) is filled in the main cylinder body (6), the oscillating units and the communicating units; the bottom of the oscillating unit and the bottom of the communicating unit are respectively provided with a horizontal stay bar (5) communicated with the main cylinder body (6), the oscillating unit and the communicating unit are respectively provided with an inclined stay (7) communicated with the main cylinder body (6), and the inclined stay (7) is arranged above the horizontal stay bar (5); a baffle plate (13) arranged along the section of the horizontal stay bar (5) is arranged in the horizontal stay bar (5) of the oscillating unit, and an orifice (14) is formed on the baffle plate (13); the oscillating unit and the communicating unit are symmetrically arranged by taking the main cylinder body (6) as a center.
2. A bi-directional tuned liquid column damper suitable for use in offshore wind power generation units according to claim 1, wherein the communication unit and the oscillating unit are hollow and sealing structure reinforcing chords (4), and the reinforcing chords (4) are formed with sealable liquid injection ports (12).
3. A bi-directional tuned liquid column damper for offshore wind power generation units according to claim 1, wherein the main cylinder (6) and the horizontal stay (5) are hollow structures, and the liquid (11) is free to flow between the damping assembly and the main cylinder (6).
4. A bi-directional tuned liquid column damper for offshore wind power generation units according to claim 2, wherein the ratio of the cross-sectional area of the reinforcing chord (4) of the oscillating unit to the cross-sectional area of the corresponding horizontal strut (5) is larger than 1.
5. A bi-directional tuned liquid column damper for use in an offshore wind turbine according to claim 1, wherein the spacer (13) has at least one orifice (14) formed therein, the orifices (14) being arranged in an array along the surface of the spacer (13).
6. A bi-directional tuned liquid column damper for offshore wind power generation units according to claim 2, wherein the length of the horizontal stay (5) is larger than 0.8 times the height of the liquid (11) in the reinforcement chord (4) of the corresponding oscillating unit.
7. A bi-directional tuned liquid column damper for use in an offshore wind park according to claim 1, wherein said liquid (11) is at least one steady state liquid.
8. A bi-directional tuned liquid column damper for offshore wind power generation units according to claim 2, characterized in that there is a hollow space inside the reinforcing chord (4) of the oscillating unit for facilitating the flow of liquid (11).
9. A bi-directional tuned liquid column damper for offshore wind power generation units according to claim 1, wherein adjacent oscillating units are divided into a first oscillating unit (10) and a second oscillating unit (10 a), the first oscillating unit (10) and the second oscillating unit (10 a) forming a U-shaped structure communicating with the main cylinder (6).
10. An offshore wind generating set, comprising the bidirectional tuning liquid column damper according to any one of claims 1-9, characterized by comprising a plurality of chords (1) arranged on a mud surface in the sea, wherein mud struts (2) are arranged between adjacent chords (1), an X-shaped diagonal bracing (3) connected with each other is arranged between the adjacent chords (1), the bidirectional tuning liquid column damper is arranged at the top of the chords (1), reinforcing chords (4) are arranged at the top of the corresponding chords (1), a tower barrel (8) is arranged on a main barrel (6), and an upper fan (9) is arranged on the tower barrel (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210996415.3A CN115435035B (en) | 2022-08-19 | 2022-08-19 | Bidirectional tuning liquid column damper and offshore wind turbine generator system using same |
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| CN202210996415.3A CN115435035B (en) | 2022-08-19 | 2022-08-19 | Bidirectional tuning liquid column damper and offshore wind turbine generator system using same |
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| CN116044954B (en) * | 2023-01-29 | 2023-08-04 | 兰州理工大学 | Bidirectional tuning corrugated liquid column damper and mounting method thereof |
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| CN103541458A (en) * | 2013-11-08 | 2014-01-29 | 同济大学 | Novel TLD (Tuned Liquid Damper) |
| CN114809765A (en) * | 2022-04-18 | 2022-07-29 | 清华大学 | Liquid level adjustable tuning liquid column damper and tower barrel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH086494B2 (en) * | 1991-06-07 | 1996-01-24 | 鹿島建設株式会社 | Vibration control device for structures |
| CN1718962A (en) * | 2005-07-01 | 2006-01-11 | 河北理工大学 | Tridimensional vibration isolation device |
| CN209854963U (en) * | 2019-03-12 | 2019-12-27 | 清华大学 | Cylindrical tuning liquid column damper |
| CN215370107U (en) * | 2021-05-26 | 2021-12-31 | 大连理工大学 | Movable damper system suitable for offshore wind turbine generator system |
| CN114909010B (en) * | 2022-04-18 | 2023-06-02 | 中国长江三峡集团有限公司 | Tuned air pressure liquid column damper and tower |
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2022
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| CN103541458A (en) * | 2013-11-08 | 2014-01-29 | 同济大学 | Novel TLD (Tuned Liquid Damper) |
| CN114809765A (en) * | 2022-04-18 | 2022-07-29 | 清华大学 | Liquid level adjustable tuning liquid column damper and tower barrel |
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