CN114658040B - Can reduce marine wind turbine pile foundation shock-absorbing structure of impact - Google Patents
Can reduce marine wind turbine pile foundation shock-absorbing structure of impact Download PDFInfo
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- CN114658040B CN114658040B CN202210285795.XA CN202210285795A CN114658040B CN 114658040 B CN114658040 B CN 114658040B CN 202210285795 A CN202210285795 A CN 202210285795A CN 114658040 B CN114658040 B CN 114658040B
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 125
- 238000013016 damping Methods 0.000 claims abstract description 123
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- 238000007667 floating Methods 0.000 claims description 80
- 230000035939 shock Effects 0.000 claims description 20
- 230000001154 acute effect Effects 0.000 claims description 4
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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Abstract
The invention relates to the technical field of offshore wind power generation, in particular to a pile foundation damping structure of an offshore wind turbine, which comprises a pile body and a first damping component arranged on the pile body; the first damping component comprises a first annular energy absorption cylinder, a second annular energy absorption cylinder, a third annular energy absorption cylinder and an energy dissipation sleeve, and the circumferential inner wall of the third annular energy absorption cylinder is in sliding fit with the pile body; damping mediums are arranged in the inner cavities of the first annular energy absorption cylinder, the second annular energy absorption cylinder and the third annular energy absorption cylinder; the circumference inner wall of the energy dissipation sleeve is locked with the third lock hole, and the circumference outer wall of the energy dissipation sleeve is provided with energy dissipation blades. The pile foundation damping structure of the offshore wind turbine provided by the invention utilizes the three-stage annular energy absorption cylinders to consume the impact force of ocean currents step by step, effectively reduces the impact effect of ocean currents on foundation piles, can meet the safety requirements of the foundation piles at different depths, reduces the swing of the pile foundation, and avoids the damage caused by an offshore wind turbine generator set.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation, in particular to a pile foundation damping structure of an offshore wind turbine, which can reduce impact.
Background
In the deep sea area far from the continent, a plurality of high-quality wind power resources can be developed and utilized, and the market prospect is wide. In developing wind power resources for these deep sea areas, it is currently common practice to use various through pile structures secured to the sea floor to secure the offshore wind turbine foundation. Along with the increase of the sea water depth, the impact of the sea water can lead to vibration and swing of the pile foundation, and can easily cause larger damage to the offshore wind turbine generator system, so that the construction and maintenance cost of the offshore wind turbine generator system rises directly, and great potential safety hazards exist.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the damping structure for the pile foundation of the offshore wind turbine can reduce the influence of seawater impact on the pile foundation.
In order to solve the technical problems, the invention adopts the following technical scheme: a pile foundation damping structure of an offshore wind turbine comprises a pile body and a first damping component arranged on the pile body;
The first damping component comprises a first annular energy absorption cylinder, a second annular energy absorption cylinder, a third annular energy absorption cylinder and an energy dissipation sleeve, and the circumferential inner wall of the third annular energy absorption cylinder is in sliding fit with the pile body;
The inner part of the third annular energy-absorbing cylinder is hollow, a first annular assembly opening is formed in the circumferential outer wall of the third annular energy-absorbing cylinder, a first annular track is formed in the position, located at the first annular assembly opening, of the third annular energy-absorbing cylinder, a first rotary sleeve is rotatably arranged on the first annular track, the first rotary sleeve is in interference fit with the first annular assembly opening, more than three first rotary pistons extending into the inner cavity of the third annular energy-absorbing cylinder are arranged on the circumferential inner wall of the first rotary sleeve, the first rotary pistons are in interference fit with the inner wall of the third annular energy-absorbing cylinder, a first channel is formed in the first rotary piston, and a first lock hole is formed in the circumferential outer wall of the first rotary sleeve;
The second annular energy-absorbing cylinder is hollow, the inner circumferential wall of the second annular energy-absorbing cylinder is locked with the first lock hole, the outer circumferential wall of the second annular energy-absorbing cylinder is provided with a second annular assembly opening, the second annular energy-absorbing cylinder is provided with a second annular track at the second annular assembly opening, the second annular track is rotatably provided with a second rotary sleeve, the second rotary sleeve is in interference fit with the second annular assembly opening, the inner circumferential wall of the second rotary sleeve is provided with more than three second rotary pistons extending into the inner cavity of the second annular energy-absorbing cylinder, the second rotary pistons are in interference fit with the inner wall of the second annular energy-absorbing cylinder, the second rotary pistons are provided with second channels, and the outer circumferential wall of the second rotary sleeve is provided with a second lock hole;
the first annular energy-absorbing cylinder is hollow, the inner circumferential wall of the first annular energy-absorbing cylinder is locked with the second lock hole, a third annular assembly opening is formed in the outer circumferential wall of the first annular energy-absorbing cylinder, a third annular track is formed in the position, located at the third annular assembly opening, of the first annular energy-absorbing cylinder, a third rotary sleeve is rotatably arranged on the third annular track, the third rotary sleeve is in interference fit with the third annular assembly opening, more than three third rotary pistons extending into the inner cavity of the first annular energy-absorbing cylinder are arranged on the inner circumferential wall of the third rotary sleeve, the third rotary pistons are in interference fit with the inner wall of the first annular energy-absorbing cylinder, a third channel is formed in the third rotary piston, and a third lock hole is formed in the outer circumferential wall of the third rotary sleeve;
Damping mediums are arranged in the inner cavities of the first annular energy absorption cylinder, the second annular energy absorption cylinder and the third annular energy absorption cylinder;
the circumference inner wall of the energy dissipation sleeve is locked with the third lock hole, and the circumference outer wall of the energy dissipation sleeve is provided with energy dissipation blades.
The invention has the beneficial effects that: the utility model provides an offshore wind turbine pile foundation shock-absorbing structure, including the pile body and set up the first damper assembly on the pile body, first damper assembly includes first annular energy-absorbing cylinder, second annular energy-absorbing cylinder, third annular energy-absorbing cylinder and energy-dissipating cover, first annular energy-absorbing cylinder, the inside cavity of second annular energy-absorbing cylinder and third annular energy-absorbing cylinder, during the installation, install third annular energy-absorbing cylinder slidable mounting on the pile body, first rotary sleeve passes first annular assembly mouth and packs into the inner chamber of third annular energy-absorbing cylinder, first rotary sleeve and first annular track sliding fit, first rotary sleeve and first annular assembly mouth interference fit also can seal first annular assembly mouth when rotating with first annular assembly mouth, first rotary sleeve utilizes first rotary piston to separate the inner chamber of third annular energy-absorbing cylinder, first rotary piston is equipped with the first energy-absorbing lock joint that is used for supplying damping medium to pass through the first passageway, second annular energy-absorbing cylinder and first rotary sleeve's first lockhole, second rotary sleeve passes second annular assembly mouth and second annular track inner chamber, second rotary sleeve passes second annular assembly mouth interference fit and second annular energy-absorbing cylinder and third annular piston and second annular piston sliding fit also with second annular rotary sleeve, second annular piston and third rotary sleeve pass through the inner chamber of second annular assembly mouth, second annular piston sliding fit and third annular assembly mouth is used for guaranteeing that second rotary sleeve and third annular assembly mouth sliding fit, the invention provides a marine wind turbine damping structure, which is characterized in that when an energy dissipation blade on the energy dissipation sleeve is impacted by ocean currents, the energy dissipation sleeve drives the third rotary sleeve to rotate, the third rotary sleeve utilizes the third rotary piston to compress damping medium in a first annular energy absorption cylinder, the first annular energy absorption cylinder also rotates under the action of the impact force, the second rotary piston of the second rotary sleeve compresses the damping medium in a second annular energy absorption cylinder, and finally, the third annular energy absorption cylinder also rotates under the action of the transmitted impact force, so that the first rotary piston of the first rotary sleeve is driven to compress the damping medium in the third annular energy absorption cylinder.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a pile foundation damping structure for an offshore wind turbine in accordance with an embodiment of the present invention;
FIG. 2 is a transverse cross-sectional view of a pile foundation damping structure for an offshore wind turbine in accordance with an embodiment of the invention;
FIG. 3 is a schematic view of a second shock absorbing assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a third damper assembly according to an embodiment of the present invention;
description of the reference numerals:
1. A pile body;
2. A first shock absorbing assembly; 21. a first annular energy absorbing cylinder; 211. a third annular fitting port; 212. a third annular track; 213. a third rotating sleeve; 214. a third rotary piston; 215. a third channel; 216. a third lock hole; 22. a second annular energy absorbing cylinder; 221. a second annular fitting port; 222. a second endless track; 223. a second rotating sleeve; 224. a second rotary piston; 225. a second channel; 226. a second lock hole; 23. a third annular energy absorbing cylinder; 231. a first annular fitting port; 232. a first endless track; 233. a first rotating sleeve; 234. a first rotary piston; 235. a first channel; 236. a first lock hole; 24. an energy dissipation sleeve; 241. energy dissipation blades; 25. an energy absorbing plate; 251. a slide rail;
3. A second shock absorbing assembly; 31. a fourth annular energy absorbing cylinder; 311. a fourth annular assembly port; 312. a first chamber; 313. a second chamber; 314. a fourth channel; 32. a first piston float sleeve; 33. a first floating piston; 34. a first damper spring;
4. a third shock absorbing assembly; 41. a fifth annular energy absorbing cylinder; 411. a fifth annular fitting port; 412. a third chamber; 413. a fourth chamber; 414. a fifth channel; 42. a second piston floating sleeve; 43. a second floating piston; 44. and a second damping spring.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 4, a damping structure for pile foundation of offshore wind turbine includes a pile body and a first damping component disposed on the pile body;
The first damping component comprises a first annular energy absorption cylinder, a second annular energy absorption cylinder, a third annular energy absorption cylinder and an energy dissipation sleeve, and the circumferential inner wall of the third annular energy absorption cylinder is in sliding fit with the pile body;
The inner part of the third annular energy-absorbing cylinder is hollow, a first annular assembly opening is formed in the circumferential outer wall of the third annular energy-absorbing cylinder, a first annular track is formed in the position, located at the first annular assembly opening, of the third annular energy-absorbing cylinder, a first rotary sleeve is rotatably arranged on the first annular track, the first rotary sleeve is in interference fit with the first annular assembly opening, more than three first rotary pistons extending into the inner cavity of the third annular energy-absorbing cylinder are arranged on the circumferential inner wall of the first rotary sleeve, the first rotary pistons are in interference fit with the inner wall of the third annular energy-absorbing cylinder, a first channel is formed in the first rotary piston, and a first lock hole is formed in the circumferential outer wall of the first rotary sleeve;
The second annular energy-absorbing cylinder is hollow, the inner circumferential wall of the second annular energy-absorbing cylinder is locked with the first lock hole, the outer circumferential wall of the second annular energy-absorbing cylinder is provided with a second annular assembly opening, the second annular energy-absorbing cylinder is provided with a second annular track at the second annular assembly opening, the second annular track is rotatably provided with a second rotary sleeve, the second rotary sleeve is in interference fit with the second annular assembly opening, the inner circumferential wall of the second rotary sleeve is provided with more than three second rotary pistons extending into the inner cavity of the second annular energy-absorbing cylinder, the second rotary pistons are in interference fit with the inner wall of the second annular energy-absorbing cylinder, the second rotary pistons are provided with second channels, and the outer circumferential wall of the second rotary sleeve is provided with a second lock hole;
the first annular energy-absorbing cylinder is hollow, the inner circumferential wall of the first annular energy-absorbing cylinder is locked with the second lock hole, a third annular assembly opening is formed in the outer circumferential wall of the first annular energy-absorbing cylinder, a third annular track is formed in the position, located at the third annular assembly opening, of the first annular energy-absorbing cylinder, a third rotary sleeve is rotatably arranged on the third annular track, the third rotary sleeve is in interference fit with the third annular assembly opening, more than three third rotary pistons extending into the inner cavity of the first annular energy-absorbing cylinder are arranged on the inner circumferential wall of the third rotary sleeve, the third rotary pistons are in interference fit with the inner wall of the first annular energy-absorbing cylinder, a third channel is formed in the third rotary piston, and a third lock hole is formed in the outer circumferential wall of the third rotary sleeve;
Damping mediums are arranged in the inner cavities of the first annular energy absorption cylinder, the second annular energy absorption cylinder and the third annular energy absorption cylinder;
the circumference inner wall of the energy dissipation sleeve is locked with the third lock hole, and the circumference outer wall of the energy dissipation sleeve is provided with energy dissipation blades.
From the above description, the beneficial effects of the invention are as follows: the utility model provides an offshore wind turbine pile foundation shock-absorbing structure, including the pile body and set up the first damper assembly on the pile body, first damper assembly includes first annular energy-absorbing cylinder, second annular energy-absorbing cylinder, third annular energy-absorbing cylinder and energy-dissipating cover, first annular energy-absorbing cylinder, the inside cavity of second annular energy-absorbing cylinder and third annular energy-absorbing cylinder, during the installation, install third annular energy-absorbing cylinder slidable mounting on the pile body, first rotary sleeve passes first annular assembly mouth and packs into the inner chamber of third annular energy-absorbing cylinder, first rotary sleeve and first annular track sliding fit, first rotary sleeve and first annular assembly mouth interference fit also can seal first annular assembly mouth when rotating with first annular assembly mouth, first rotary sleeve utilizes first rotary piston to separate the inner chamber of third annular energy-absorbing cylinder, first rotary piston is equipped with the first energy-absorbing lock joint that is used for supplying damping medium to pass through the first passageway, second annular energy-absorbing cylinder and first rotary sleeve's first lockhole, second rotary sleeve passes second annular assembly mouth and second annular track inner chamber, second rotary sleeve passes second annular assembly mouth interference fit and second annular energy-absorbing cylinder and third annular piston and second annular piston sliding fit also with second annular rotary sleeve, second annular piston and third rotary sleeve pass through the inner chamber of second annular assembly mouth, second annular piston sliding fit and third annular assembly mouth is used for guaranteeing that second rotary sleeve and third annular assembly mouth sliding fit, the invention provides a marine wind turbine damping structure, which is characterized in that when an energy dissipation blade on the energy dissipation sleeve is impacted by ocean currents, the energy dissipation sleeve drives the third rotary sleeve to rotate, the third rotary sleeve utilizes the third rotary piston to compress damping medium in a first annular energy absorption cylinder, the first annular energy absorption cylinder also rotates under the action of the impact force, the second rotary piston of the second rotary sleeve compresses the damping medium in a second annular energy absorption cylinder, and finally, the third annular energy absorption cylinder also rotates under the action of the transmitted impact force, so that the first rotary piston of the first rotary sleeve is driven to compress the damping medium in the third annular energy absorption cylinder.
Further, the inner cavity volumes of the first annular energy absorbing cylinder, the second annular energy absorbing cylinder and the third annular energy absorbing cylinder are sequentially increased, and the apertures of the first channel, the second channel and the third channel are gradually reduced.
As can be seen from the above description, the volumes of the first annular energy absorbing cylinder, the second annular energy absorbing cylinder and the third annular energy absorbing cylinder are sequentially increased, and the apertures of the first channel, the second channel and the third channel are gradually decreased, so that the purpose of the design is to gradually increase the damping force generated by rotation between the energy absorbing cylinders, thereby improving the buffering and damping effects of the first damping component.
Further, the first damping component further comprises an energy absorption plate, a corrugated steel plate is embedded in the energy absorption plate, the energy absorption plate is detachably connected with the pile body, a sliding rail is arranged on the energy absorption plate, and the circumferential inner wall of the third annular energy absorption cylinder is in sliding fit with the sliding rail.
From the above description, the energy absorbing plate is used for enhancing the energy absorbing effect of the first shock absorbing component, and meanwhile, the sliding rail is used for realizing the sliding of the first shock absorbing component along the axial direction of the pile body, so that the adaptability of the shock absorbing structure is improved.
Further, the pile foundation damping structure of the offshore wind turbine further comprises a second damping component and a third damping component which are respectively arranged on the pile body, and the second damping component and the third damping component are respectively positioned at two sides of the first damping component along the axis of the pile body;
The second damping component comprises a fourth annular energy absorption cylinder, a first piston floating sleeve and a first floating piston, the fourth annular energy absorption cylinder is hollow, the inner wall of the fourth annular energy absorption cylinder is detachably connected with the pile body through a fastener, a fourth annular assembly opening is formed in the end face, close to the first damping component, of the fourth annular energy absorption cylinder, one end of the first piston floating sleeve stretches into an inner cavity of the fourth annular energy absorption cylinder from the fourth annular assembly opening, the first piston floating sleeve is in interference fit with the fourth annular assembly opening, the first floating piston is arranged at one end of the first piston floating sleeve, the first floating piston divides the inner cavity of the fourth annular energy absorption cylinder into a first cavity and a second cavity, a fourth channel which is communicated with the first cavity and the second cavity is formed in the first floating piston, and the other end of the first piston floating sleeve is connected with the third annular energy absorption cylinder;
the third damping component comprises a fifth annular energy absorption cylinder, a second piston floating sleeve and a second floating piston, the interior of the fifth annular energy absorption cylinder is hollow, the inner wall of the fifth annular energy absorption cylinder is detachably connected with the pile body through a fastener, a fifth annular assembly opening is formed in the end face, close to the first damping component, of the fifth annular energy absorption cylinder, one end of the second piston floating sleeve stretches into an inner cavity of the fifth annular energy absorption cylinder from the fifth annular assembly opening, the second piston floating sleeve is in interference fit with the fifth annular assembly opening, the second floating piston is arranged at one end of the second piston floating sleeve, the inner cavity of the fifth annular energy absorption cylinder is divided into a third cavity and a fourth cavity by the second floating piston, a fifth channel which is communicated with the third cavity and the fourth cavity is formed in the second floating piston, and the other end of the second piston floating sleeve is connected with the third annular energy absorption cylinder;
damping mediums are arranged in the inner cavities of the fourth annular energy absorption cylinder and the fifth annular energy absorption cylinder.
It can be seen from the above description that the second damping component and the third damping component are respectively disposed at two opposite sides of the first damping component along the axial direction, and the second damping component and the third damping component each include an energy-absorbing cylinder, a piston floating sleeve and a floating piston, when the first damping component is impacted by ocean currents and moves up and down, the two piston floating sleeves respectively move in the fourth annular energy-absorbing cylinder and the fifth annular energy-absorbing cylinder, so as to respectively drive the two floating pistons to compress damping mediums in the two energy-absorbing cylinders, and damping forces are generated in the two energy-absorbing cylinders to jointly buffer the impact of the first damping component, thereby improving the damping effect of the foundation pile.
Further, a first damping spring is arranged in the first chamber, one end of the first damping spring is connected with the inner wall of the fourth annular energy absorption barrel, the other end of the first damping spring is connected with the first floating piston, a second damping spring is arranged in the third chamber, one end of the second damping spring is connected with the inner wall of the fifth annular energy absorption barrel, and the other end of the second damping spring is connected with the second floating piston.
From the above description, it is apparent that the first damper spring and the second damper spring further enhance the cushioning and damping capacity of the second damper assembly and the third damper assembly.
Further, the surfaces of the first rotary sleeve, the second rotary sleeve, the third rotary sleeve, the first rotary piston, the second rotary piston, the third rotary piston, the first piston floating sleeve, the first floating piston, the second piston floating sleeve and the second floating piston are all provided with DLC coatings.
From the above description, DLC coatings improve the corrosion and wear resistance properties of the above components, meeting the requirements of durable sealing.
Further, the included angle between the fourth channel and the axis of the pile body and the included angle between the fifth channel and the axis of the pile body are acute angles.
From the above description, it is preferred that the design of the acute angle further contributes to the shock absorbing capacity of the second and third shock absorbing members.
Further, the damping medium is damping oil.
From the above description, it is clear that the damping capacity of the damping assembly is improved by the damping medium using damping oil, and a certain buoyancy is provided.
Further, the first rotary sleeve is sealed with the first annular assembly opening, the second rotary sleeve is sealed with the second annular assembly opening, and the third rotary sleeve is sealed with the third annular assembly opening through labyrinth sealing elements.
From the above description, the labyrinth seal contributes to an improvement in the durable sealing of the assembled structure.
Further, the included angle between the energy dissipation blade and the axis of the pile body ranges from 45 degrees to 60 degrees.
From the description, the included angle between the energy dissipation blade and the axis of the pile body is designed to be 45-60 degrees, so as to ensure the working performance of the damping component under the action of different ocean currents.
Referring to fig. 1 to 4, a first embodiment of the present invention is as follows: the pile foundation damping structure of the offshore wind turbine comprises a pile body 1 and a first damping component 2 arranged on the pile body 1;
The first damping component 2 comprises a first annular energy absorption cylinder 21, a second annular energy absorption cylinder 22, a third annular energy absorption cylinder 23 and an energy dissipation sleeve 24, and the circumferential inner wall of the third annular energy absorption cylinder 23 is in sliding fit with the pile body 1;
The inside of the third annular energy absorbing cylinder 23 is hollow, a first annular assembly opening 231 is formed in the circumferential outer wall of the third annular energy absorbing cylinder 23, a first annular track 232 is formed in the position, located at the first annular assembly opening 231, of the third annular energy absorbing cylinder 23, a first rotary sleeve 233 is rotatably arranged on the first annular track 232, the first rotary sleeve 233 is in interference fit with the first annular assembly opening 231, more than three first rotary pistons 234 extending into the inner cavity of the third annular energy absorbing cylinder 23 are arranged on the circumferential inner wall of the first rotary sleeve 233, the first rotary pistons 234 are in interference fit with the inner wall of the third annular energy absorbing cylinder 23, a first channel 235 is formed in the first rotary piston 234, and a first lock hole 236 is formed in the circumferential outer wall of the first rotary sleeve 233;
the second annular energy absorbing cylinder 22 is hollow, the circumferential inner wall of the second annular energy absorbing cylinder 22 is locked with the first lock hole 236, a second annular assembly opening 221 is formed in the circumferential outer wall of the second annular energy absorbing cylinder 22, a second annular track 222 is formed in the position, located at the second annular assembly opening 221, of the second annular energy absorbing cylinder 22, a second rotary sleeve 223 is rotatably arranged on the second annular track 222, the second rotary sleeve 223 is in interference fit with the second annular assembly opening 221, more than three second rotary pistons 224 extending into the inner cavity of the second annular energy absorbing cylinder 22 are arranged in the circumferential inner wall of the second rotary sleeve 223, the second rotary pistons 224 are in interference fit with the inner wall of the second annular energy absorbing cylinder 22, a second channel 225 is formed in the second rotary pistons 224, and a second lock hole 226 is formed in the circumferential outer wall of the second rotary sleeve 223;
The inside of the first annular energy-absorbing cylinder 21 is hollow, the circumferential inner wall of the first annular energy-absorbing cylinder 21 is locked with the second lock hole 226, a third annular assembly opening 211 is arranged on the circumferential outer wall of the first annular energy-absorbing cylinder 21, a third annular track 212 is arranged at the position of the first annular energy-absorbing cylinder 21, a third rotary sleeve 213 is rotatably arranged on the third annular track 212, the third rotary sleeve 213 is in interference fit with the third annular assembly opening 211, more than three third rotary pistons 214 extending into the inner cavity of the first annular energy-absorbing cylinder 21 are arranged on the circumferential inner wall of the third rotary sleeve 213, the third rotary pistons 214 are in interference fit with the inner wall of the first annular energy-absorbing cylinder 21, a third channel 215 is arranged on the third rotary pistons 214, and a third lock hole 216 is arranged on the circumferential outer wall of the third rotary sleeve 213;
Damping mediums are arranged in the inner cavities of the first annular energy absorption cylinder 21, the second annular energy absorption cylinder 22 and the third annular energy absorption cylinder 23;
the circumferential inner wall of the energy dissipation sleeve 24 is locked with the third lock hole 216, and the circumferential outer wall of the energy dissipation sleeve 24 is provided with energy dissipation blades 241.
The inner cavity volumes of the first annular energy absorbing cylinder 21, the second annular energy absorbing cylinder 22 and the third annular energy absorbing cylinder 23 are sequentially increased, and the pore diameters of the first channel 235, the second channel 225 and the third channel 215 are gradually reduced. The first damping component 2 further comprises an energy absorption plate 25, a corrugated steel plate is embedded in the energy absorption plate 25, the energy absorption plate 25 is detachably connected with the pile body 1, a sliding rail 251 is arranged on the energy absorption plate 25, and the circumferential inner wall of the third annular energy absorption barrel 23 is in sliding fit with the sliding rail 251. The pile foundation damping structure of the offshore wind turbine further comprises a second damping component 3 and a third damping component 4 which are respectively arranged on the pile body 1, wherein the second damping component 3 and the third damping component 4 are respectively positioned at two sides of the first damping component 2 along the axis of the pile body 1; the second shock absorption assembly 3 comprises a fourth annular energy absorption barrel 31, a first piston floating sleeve 32 and a first floating piston 33, the fourth annular energy absorption barrel 31 is hollow, the inner wall of the fourth annular energy absorption barrel 31 is detachably connected with the pile body 1 through a fastener, a fourth annular assembly opening 311 is formed in the end face, close to the first shock absorption assembly 2, of the fourth annular energy absorption barrel 31, one end of the first piston floating sleeve 32 extends into the inner cavity of the fourth annular energy absorption barrel 31 from the fourth annular assembly opening 311, the first piston floating sleeve 32 is in interference fit with the fourth annular assembly opening 311, the first floating piston 33 is arranged at one end of the first piston floating sleeve 32, the inner cavity of the fourth annular energy absorption barrel 31 is divided into a first cavity 312 and a second cavity 313 by the first floating piston 33, a fourth channel 314 which is communicated with the first cavity 312 and the second cavity 313 is formed in the first floating piston 33, and the other end of the first piston floating sleeve 32 is connected with the third annular energy absorption barrel 23; the third shock absorption assembly 4 comprises a fifth annular energy absorption barrel 41, a second piston floating sleeve 42 and a second floating piston 43, the interior of the fifth annular energy absorption barrel 41 is hollow, the inner wall of the fifth annular energy absorption barrel 41 is detachably connected with the pile body 1 through a fastener, a fifth annular assembly opening 411 is formed in the end face, close to the first shock absorption assembly 2, of the fifth annular energy absorption barrel 41, one end of the second piston floating sleeve 42 extends into the inner cavity of the fifth annular energy absorption barrel 41 from the fifth annular assembly opening 411, the second piston floating sleeve 42 is in interference fit with the fifth annular assembly opening 411, the second floating piston 43 is arranged at one end of the second piston floating sleeve 42, the inner cavity of the fifth annular energy absorption barrel 41 is divided into a third cavity 412 and a fourth cavity 413 by the second floating piston 43, a fifth channel 414 which is communicated with the third cavity 412 and the fourth cavity 413 is formed in the second floating piston 43, and the other end of the second piston floating sleeve 42 is connected with the third floating barrel 23; damping media are arranged in the inner cavities of the fourth annular energy absorbing cylinder 31 and the fifth annular energy absorbing cylinder 41. The first chamber 312 is internally provided with a first damping spring 34, one end of the first damping spring 34 is connected with the inner wall of the fourth annular energy absorbing cylinder 31, the other end of the first damping spring 34 is connected with the first floating piston 33, the third chamber 412 is internally provided with a second damping spring 44, one end of the second damping spring 44 is connected with the inner wall of the fifth annular energy absorbing cylinder 41, and the other end of the second damping spring 44 is connected with the second floating piston 43. The surfaces of the first rotary sleeve 233, the second rotary sleeve 223, the third rotary sleeve 213, the first rotary piston 234, the second rotary piston 224, the third rotary piston 214, the first piston floating sleeve 32, the first floating piston 33, the second piston floating sleeve 42 and the second floating piston 43 are all provided with DLC coatings. The included angle between the fourth channel 314 and the axis of the pile body 1 and the included angle between the fifth channel 414 and the axis of the pile body 1 are acute angles. The damping medium is damping oil. The first rotating sleeve 233 and the first annular fitting opening 231, the second rotating sleeve 223 and the second annular fitting opening 221, and the third rotating sleeve 213 and the third annular fitting opening 211 are sealed by labyrinth seals. The included angle between the energy dissipation blade 241 and the axis of the pile body 1 is 45-60 degrees. The first, second, third, fourth and fifth channels 235, 225, 215, 314, 414 are circular in cross-sectional shape. The aperture of the fourth channel 314 increases gradually from the end close to the first damper component 2 to the end far away from the first damper component 2, and the aperture of the fifth channel 414 increases gradually from the end close to the first damper component 2 to the end far away from the first damper component 2.
In summary, the invention provides a pile foundation damping structure of an offshore wind turbine, which comprises a pile body and a first damping component arranged on the pile body, wherein the first damping component comprises a first annular energy absorbing cylinder, a second annular energy absorbing cylinder, a third annular energy absorbing cylinder and an energy dissipating sleeve, the first annular energy absorbing cylinder, the second annular energy absorbing cylinder and the third annular energy absorbing cylinder are hollow, when being installed, the third annular energy absorbing cylinder is installed on the pile body in a sliding manner, the first rotary sleeve passes through a first annular assembly opening and is installed in an inner cavity of the third annular energy absorbing cylinder, the first rotary sleeve is in sliding fit with a first annular track, the first rotary sleeve is in interference fit with a first annular assembly opening, the first rotary sleeve can also seal the first annular assembly opening during rotation, the first rotary sleeve is separated from the inner cavity of the third annular energy absorbing cylinder by a first rotary piston, the first rotary piston is provided with a first lock hole for locking the damping medium to pass through a first channel, the second annular energy absorbing cylinder passes through a second annular assembly opening and is also in interference fit with a second annular piston, the second rotary sleeve passes through a second annular assembly opening and is also in interference fit with a second annular lock hole, the second rotary sleeve can pass through the second annular assembly opening and the second annular assembly opening, the second rotary sleeve is also in interference fit with the second annular assembly opening during rotation, the second rotary sleeve can pass through the second annular assembly opening is in interference fit with the second annular assembly opening, the invention provides a marine wind turbine damping structure, which is characterized in that when an energy dissipation blade on the energy dissipation sleeve is impacted by ocean currents, the energy dissipation sleeve drives the third rotary sleeve to rotate, the third rotary sleeve utilizes the third rotary piston to compress damping medium in a first annular energy absorption cylinder, the first annular energy absorption cylinder also rotates under the action of the impact force, the second rotary piston of the second rotary sleeve compresses the damping medium in a second annular energy absorption cylinder, and finally, the third annular energy absorption cylinder also rotates under the action of the transmitted impact force, so that the first rotary piston of the first rotary sleeve is driven to compress the damping medium in the third annular energy absorption cylinder.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (9)
1. The pile foundation damping structure of the offshore wind turbine capable of reducing impact is characterized by comprising a pile body and a first damping component arranged on the pile body;
The first damping component comprises a first annular energy absorption cylinder, a second annular energy absorption cylinder, a third annular energy absorption cylinder and an energy dissipation sleeve, and the circumferential inner wall of the third annular energy absorption cylinder is in sliding fit with the pile body;
The inner part of the third annular energy-absorbing cylinder is hollow, a first annular assembly opening is formed in the circumferential outer wall of the third annular energy-absorbing cylinder, a first rotary sleeve is rotatably arranged on the third annular energy-absorbing cylinder, the first rotary sleeve is in interference fit with the first annular assembly opening, a first rotary piston extending into the inner cavity of the third annular energy-absorbing cylinder is arranged on the circumferential inner wall of the first rotary sleeve, the first rotary piston is in interference fit with the inner wall of the third annular energy-absorbing cylinder, and a first channel is formed in the first rotary piston;
the second annular energy-absorbing cylinder is hollow, the circumferential inner wall of the second annular energy-absorbing cylinder is locked with the first rotary sleeve, a second annular assembly opening is formed in the circumferential outer wall of the second annular energy-absorbing cylinder, a second rotary sleeve is rotatably arranged on the second annular energy-absorbing cylinder, the second rotary sleeve is in interference fit with the second annular assembly opening, a second rotary piston extending into the inner cavity of the second annular energy-absorbing cylinder is arranged on the circumferential inner wall of the second rotary sleeve, the second rotary piston is in interference fit with the inner wall of the second annular energy-absorbing cylinder, and a second channel is formed in the second rotary piston;
The first annular energy-absorbing cylinder is hollow, the circumferential inner wall of the first annular energy-absorbing cylinder is locked with the second rotary sleeve, a third annular assembly opening is formed in the circumferential outer wall of the first annular energy-absorbing cylinder, a third rotary sleeve is rotatably arranged on the first annular energy-absorbing cylinder, the third rotary sleeve is in interference fit with the third annular assembly opening, a third rotary piston extending into the inner cavity of the first annular energy-absorbing cylinder is arranged on the circumferential inner wall of the third rotary sleeve, the third rotary piston is in interference fit with the inner wall of the first annular energy-absorbing cylinder, and a third channel is formed in the third rotary piston;
Damping mediums are arranged in the inner cavities of the first annular energy absorption cylinder, the second annular energy absorption cylinder and the third annular energy absorption cylinder;
The circumferential inner wall of the energy dissipation sleeve is locked with the third rotary sleeve, and the circumferential outer wall of the energy dissipation sleeve is provided with energy dissipation blades;
The inner cavity volumes of the first annular energy absorption barrel, the second annular energy absorption barrel and the third annular energy absorption barrel are sequentially increased, and the apertures of the first channel, the second channel and the third channel are gradually reduced.
2. The offshore wind turbine pile foundation damping structure capable of reducing impact according to claim 1, wherein the first damping component further comprises an energy absorption plate, corrugated steel plates are embedded in the energy absorption plate and detachably connected with the pile body, sliding rails are arranged on the energy absorption plate, the circumferential inner wall of the third annular energy absorption barrel is in sliding fit with the sliding rails, and the first damping component slides along the axial direction of the pile body through the sliding rails.
3. The offshore wind turbine pile foundation damping structure capable of reducing impact according to claim 1, further comprising a second damping component and a third damping component which are respectively arranged on the pile body, wherein the second damping component and the third damping component are respectively positioned on two sides of the first damping component along the axis of the pile body;
The second damping component comprises a fourth annular energy absorption cylinder, a first piston floating sleeve and a first floating piston, the fourth annular energy absorption cylinder is hollow, the inner wall of the fourth annular energy absorption cylinder is detachably connected with the pile body through a fastener, a fourth annular assembly opening is formed in the end face, close to the first damping component, of the fourth annular energy absorption cylinder, one end of the first piston floating sleeve stretches into an inner cavity of the fourth annular energy absorption cylinder from the fourth annular assembly opening, the first piston floating sleeve is in interference fit with the fourth annular assembly opening, the first floating piston is arranged at one end of the first piston floating sleeve, the first floating piston divides the inner cavity of the fourth annular energy absorption cylinder into a first cavity and a second cavity, a fourth channel which is communicated with the first cavity and the second cavity is formed in the first floating piston, and the other end of the first piston floating sleeve is connected with the third annular energy absorption cylinder;
the third damping component comprises a fifth annular energy absorption cylinder, a second piston floating sleeve and a second floating piston, the interior of the fifth annular energy absorption cylinder is hollow, the inner wall of the fifth annular energy absorption cylinder is detachably connected with the pile body through a fastener, a fifth annular assembly opening is formed in the end face, close to the first damping component, of the fifth annular energy absorption cylinder, one end of the second piston floating sleeve stretches into an inner cavity of the fifth annular energy absorption cylinder from the fifth annular assembly opening, the second piston floating sleeve is in interference fit with the fifth annular assembly opening, the second floating piston is arranged at one end of the second piston floating sleeve, the inner cavity of the fifth annular energy absorption cylinder is divided into a third cavity and a fourth cavity by the second floating piston, a fifth channel which is communicated with the third cavity and the fourth cavity is formed in the second floating piston, and the other end of the second piston floating sleeve is connected with the third annular energy absorption cylinder;
damping mediums are arranged in the inner cavities of the fourth annular energy absorption cylinder and the fifth annular energy absorption cylinder;
The aperture of the fourth channel gradually increases from one end close to the first shock absorption component to one end far away from the first shock absorption component, and the aperture of the fifth channel gradually increases from one end close to the first shock absorption component to one end far away from the first shock absorption component.
4. The offshore wind turbine pile foundation damping structure capable of reducing impact according to claim 3, wherein a first damping spring is arranged in the first chamber, one end of the first damping spring is connected with the inner wall of the fourth annular energy absorption barrel, the other end of the first damping spring is connected with the first floating piston, a second damping spring is arranged in the third chamber, one end of the second damping spring is connected with the inner wall of the fifth annular energy absorption barrel, and the other end of the second damping spring is connected with the second floating piston.
5. The offshore wind turbine pile foundation damping structure capable of reducing impact according to claim 3, wherein the surfaces of the first rotary sleeve, the second rotary sleeve, the third rotary sleeve, the first rotary piston, the second rotary piston, the third rotary piston, the first piston floating sleeve, the first floating piston, the second piston floating sleeve and the second floating piston are provided with DLC coatings.
6. The offshore wind turbine pile foundation damping structure capable of reducing impact according to claim 3, wherein the included angle between the fourth channel and the axis of the pile body and the included angle between the fifth channel and the axis of the pile body are acute angles.
7. The shock absorbing structure of an offshore wind turbine pile foundation of claim 1, wherein the shock absorbing medium is a shock absorbing oil.
8. The impact-reducible offshore wind turbine foundation vibration absorbing structure of claim 1, wherein the first swivel sleeve is sealed with the first annular fitting, the second swivel sleeve is sealed with the second annular fitting, and the third swivel sleeve is sealed with the third annular fitting with labyrinth seals.
9. The offshore wind turbine pile foundation damping structure capable of reducing impact according to claim 1, wherein the included angle between the energy dissipation blade and the axis of the pile body is 45-60 degrees.
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| CN202011207111.1A CN112376623B (en) | 2020-11-03 | 2020-11-03 | Pile foundation damping structure of offshore wind turbine |
| CN202210285795.XA CN114658040B (en) | 2020-11-03 | 2020-11-03 | Can reduce marine wind turbine pile foundation shock-absorbing structure of impact |
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| CN112376623B (en) | 2022-04-19 |
| CN112376623A (en) | 2021-02-19 |
| CN114658040A (en) | 2022-06-24 |
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