CN112878352B - Single pile foundation - Google Patents
Single pile foundation Download PDFInfo
- Publication number
- CN112878352B CN112878352B CN202110041670.8A CN202110041670A CN112878352B CN 112878352 B CN112878352 B CN 112878352B CN 202110041670 A CN202110041670 A CN 202110041670A CN 112878352 B CN112878352 B CN 112878352B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pile
- single pile
- ocean current
- mono
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000013535 sea water Substances 0.000 claims abstract description 21
- 238000013016 damping Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000000670 limiting effect Effects 0.000 claims description 14
- 238000007667 floating Methods 0.000 claims description 8
- 238000010248 power generation Methods 0.000 description 28
- 238000003466 welding Methods 0.000 description 17
- 238000012423 maintenance Methods 0.000 description 12
- 230000004888 barrier function Effects 0.000 description 11
- 230000009471 action Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000003032 molecular docking Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000736911 Turritella communis Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/60—Piles with protecting cases
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a single pile foundation, comprising: the sleeve is sleeved on a single pile, wherein the inner diameter of the sleeve is larger than the outer diameter of the single pile, and an annular cavity is formed between the sleeve and the single pile; a support structure mounted on the sleeve; when the sleeve is placed in water, the support structure can provide buoyancy for the sleeve so that the sleeve floats in the water; when the sleeve floats in water, seawater entering the annular cavity forms a damping pool. This scheme utilizes natural sea water resource, forms low-cost damping pond in single pile foundation bottom, and the damping pond can reduce wave, ocean current on the one hand and act on the fatigue load on single pile foundation, and this damping pond can increase whole fan bearing structure's damping ratio in addition to reduce the vibration of unit, alleviate the influence to parts such as blade, cabin.
Description
Technical Field
The invention relates to the field of offshore power generation devices, in particular to a single-pile foundation.
Background
Most of the offshore wind farms developed at present in China obtain the generated energy by means of the rotation of impellers driven by sea wind. The offshore wind farm is located in an offshore sea area, the depth of seawater is generally 20-30 m, factors such as production cost and construction convenience are considered, and a single-pile foundation form is adopted more frequently.
The single pile foundation is used as main development equipment of offshore wind power, one of the main investments of the offshore wind turbine is that on the basis of the single pile foundation, the selection of 1/5 wind turbine foundation which accounts for the total cost directly determines the stability and the economical efficiency of the offshore wind turbine. The foundation selection of the wind turbine is different according to different working water depths of the offshore wind turbine. From shallow water to deep water, the available foundations are divided into gravity type foundations, single pile foundations, tripod type foundations, jacket foundations, suction cylinder type foundations, anchoring foundations and the like, wherein about 75% of offshore wind turbines in the world currently use single pile foundations.
As shown in fig. 1, the conventional mono-pile foundation includes a mono-pile 1, a safety barrier 2, a boarding ladder 3, a mooring member 4, etc., the mono-pile 1 is inserted into a seabed 5 by a pile driving hammer, and the safety barrier 2, the boarding ladder 3, and the mooring member 4 are fixed to an outer wall of the mono-pile 1. The seawater inside and outside the mono-pile 1 is isolated from each other, and the load of waves and ocean currents in the marine environment directly acts on the mono-pile 1. Compared with other offshore foundations, the single-pile foundation has weaker rigidity and is more easily influenced by waves and ocean currents in the marine environment, so that the single-pile foundation and the tower are subjected to larger fatigue loads, the wall thickness of the single-pile foundation and the tower shell ring needs to be increased to bear the influence of the fatigue loads, and the increase of the wall thickness can cause the increase of investment cost. The action of waves and ocean currents not only can increase the fatigue load of a single pile foundation and a tower, but also can increase the vibration amplitude of a unit, thereby bringing adverse effects on components such as blades and a cabin.
Disclosure of Invention
The invention aims to provide a single-pile foundation, which utilizes natural seawater resources, forms a low-cost damping pool at the bottom of the single-pile foundation, can reduce the fatigue load of waves and ocean currents acting on the single-pile foundation, and can increase the damping ratio of the whole fan supporting structure, thereby reducing the vibration of a unit and reducing the influence on components such as blades, a cabin and the like.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a mono-pile foundation comprising:
the sleeve is sleeved on a single pile, wherein the inner diameter of the sleeve is larger than the outer diameter of the single pile, and an annular cavity is formed between the sleeve and the single pile;
a support structure mounted on the sleeve;
when the sleeve is placed in water (which is preferably seawater), the support structure may provide buoyancy to the sleeve to float the sleeve in the water; when the sleeve floats in water, seawater entering the annular cavity forms a damping pool.
Further, the support structure comprises: the floating barrel comprises at least one annular floating plate arranged on the outer side wall of the sleeve and a plurality of floating barrels arranged on the floating plate.
Furthermore, a lower limiting plate is installed on the outer side wall of the sleeve, and the lower limiting plate is used for limiting the sleeve to determine the lowest height of the sleeve sleeved on the single pile.
Further, at least one first ocean current power generation device is mounted on the sleeve, and the first ocean current power generation device comprises:
at least two first radial supports at the upper and lower ends of the sleeve;
at least one first axial bracket mounted between two adjacent first radial brackets;
at least a first ocean current generator mounted on said first axial support.
Further, the first radial support and the first axial support form a first plane, which is parallel to or coincides with the axis of the first ocean current generator.
Furthermore, a plurality of through holes are formed in the outer side wall of the single pile, the inner cavity of the single pile is communicated with the annular cavity through the through holes, and seawater can enter the single pile through the through holes.
Further, at least one second ocean current power generation device is installed on the sleeve, and the second ocean current power generation device comprises:
at least two second radial supports at the upper and lower ends of the sleeve;
at least one second axial bracket installed between two adjacent second radial brackets;
at least one second ocean current generator mounted on said second axial support.
Further, the second axial bracket and the second axial bracket form a second plane, the second plane is perpendicular to the first plane, and the second plane is perpendicular to the axial direction of the second ocean current generator.
Furthermore, a mooring element is mounted on the sleeve, and the mooring element and the second ocean current power generation device are respectively located on two sides of the first plane.
Further, a locking device is mounted on the sleeve and used for fixing the relative position between the sleeve and the single pile, and the locking device comprises:
the fixing frame is fixedly arranged on the outer wall of the sleeve;
the first end of the locking rod is positioned in the fixing frame, and the second end of the locking rod can sequentially penetrate through the side wall of the sleeve and is abutted against the single pile;
the elastic piece is arranged in the fixing frame and used for providing pressure for the first end of the locking rod so as to enable the second end of the locking rod to be pressed on the single pile;
a magnetic attraction device;
when the magnetic attraction device is not started, the second end of the locking rod presses on the single pile, and the relative position between the sleeve and the single pile is fixed; when the magnetic attraction device is started, the locking rod is under the attraction of the magnetic attraction device, the second end of the locking device is gradually separated from the single pile, and the sleeve can rotate on the single pile.
Compared with the prior art, the invention has at least one of the following advantages:
this scheme utilizes natural sea water resource, forms low-cost damping pond in single pile foundation bottom, and the damping pond can reduce wave, ocean current on the one hand and act on the fatigue load on single pile foundation, and this damping pond can increase whole fan bearing structure's damping ratio in addition to reduce the vibration of unit, alleviate the influence to parts such as blade, cabin.
The scheme can drive the rotation of the mooring part through the combined action of the ocean current power generation device and the damping pool, and ensures that the included angle between the mooring part and waves and ocean currents always reaches an ideal angle range, so that the window period of the operation and maintenance personnel for climbing the fan to perform operation and maintenance operation is prolonged.
According to the scheme, the plurality of holes are formed in the lower portion of the single-pile foundation, so that the seawater inside and outside the single-pile foundation is communicated, and under the action of wave and ocean current loads, the seawater inside and outside the single-pile foundation flows and exchanges through compression and recovery movement of the damping pool, so that the methane generated inside the single-pile foundation is completely eradicated, electric appliances and mechanical equipment inside a tower are corroded, and unit failure is caused to stop.
Drawings
Fig. 1 is a schematic structural view of a conventional mono-pile foundation structure;
FIG. 2 is a schematic structural view of a single-pile foundation from a perspective of one embodiment of the present disclosure;
FIG. 3 is a schematic structural view of a mono-pile foundation from another perspective in an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a mono-pile foundation in accordance with an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a single pile according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a work platform according to an embodiment of the present invention;
FIG. 7 is a schematic view of a guardrail assembly according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a second ocean current power plant according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a floating plate according to an embodiment of the present invention;
FIG. 10 is a schematic structural view of a float bowl according to an embodiment of the present invention;
FIG. 11 is a schematic view of a sleeve according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a lower limiting plate according to an embodiment of the present invention;
FIG. 13 is a schematic structural diagram of a first ocean current power plant according to an embodiment of the present invention;
FIG. 14 is a schematic structural view of a docking member according to an embodiment of the present invention;
FIG. 15 is a schematic structural view of a ladder stand for boarding a ship according to an embodiment of the present invention;
FIG. 16 is a schematic view of the locking device according to an embodiment of the present invention;
fig. 17 is a cross-sectional view of a locking device in an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1 to 17 and the detailed description thereof. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention more comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or field device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or field device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or field device that comprises the element.
As shown in fig. 2, 3, 4 and 11, the present embodiment provides a mono-pile foundation including:
the sleeve 70 is used for being sleeved on a single pile 10, the inner diameter of the sleeve 70 is larger than the outer diameter of the single pile 10, and an annular cavity is formed between the sleeve 70 and the single pile 10; the lower end of the annular cavity is provided with an opening, so that seawater can enter the annular cavity;
a support structure mounted on the sleeve 70;
when the sleeve 70 is placed in water, the support structure may provide buoyancy to the sleeve 70 to float the sleeve 70 in the water; the seawater entering the annular cavity forms a low cost damping pool that reduces the fatigue loads on the monopile 10 from waves and ocean currents.
In this embodiment, the mono-pile 10 is a columnar structure formed by rolling and welding steel plates, and the mono-pile 10 is fixed (in construction, the lower end of the mono-pile 10 is inserted into the seabed 100 by a pile hammer). The upper end of the mono-pile 10 is provided with a tower, and the tower is provided with components for supporting a cabin, blades and the like, so that wind power generation can be performed.
As shown in fig. 12, an annular lower limiting plate 80 is mounted on an outer side wall of the sleeve 70, and the lower limiting plate 80 is used for limiting the sleeve 70 to determine a lowest height of the sleeve 70 when the sleeve 70 is sleeved on the monopile 10.
The lower limiting plate 80 in this embodiment is made of steel plate to form a circular ring structure, which can be equally divided into several parts for easy production and transportation. The lower limiting plate 80 is fixed to the outer wall of the mono pile 10 by welding or bolting.
As shown in fig. 4 and 8, at least one first ocean current power generating device 40 is mounted on the sleeve 70, and the first ocean current power generating device 40 includes:
at least two first radial brackets 401 at the upper and lower ends of the sleeve, the ends of which are fixed to the sleeve 70 by welding or bolting;
at least one first axial bracket 403 mounted between two adjacent first radial brackets 401;
at least a first ocean current generator 402 mounted on said first axial bracket 403; the first ocean current generator 402 may be driven by an external power source to rotate and have a function of a motor, in addition to rotating and generating electricity by ocean current.
In this embodiment, the first radial support 401 and the first axial support 403 form a first plane, which is parallel to or coincides with the axis of the first ocean current generator 402. The sleeve 70 is rotated until the second ocean current power generation device is opposite to the ocean current, and the rotating directions of the first ocean current generator 402 and the second ocean current generator 902 are matched with the ocean current direction, so that the energy utilization rate of the ocean current and the wave can be increased.
As shown in fig. 3 and 13, at least one second ocean current power generating device 90 is mounted on the sleeve 70, and the second ocean current power generating device 90 includes:
at least two second radial supports 901 at the upper and lower ends of the sleeve, the ends of which are fixed to the sleeve 70 by welding or bolting;
at least one second axial support 903 mounted between two adjacent second radial supports 901;
at least one second ocean current generator 902 mounted on said second axial support 903.
In this embodiment, the second axial support 903 and the second axial support 903 form a second plane, the second plane is perpendicular to the first plane, and the second plane is perpendicular to the axial direction of the second ocean current generator 902.
As shown in fig. 5, the mono-pile 10 is provided with a plurality of through holes above the lower limiting plate 80 and near the second ocean current power generation device, and the through holes may be provided with reinforcing rings to offset the influence of the through holes on the strength of the mono-pile 10; the reinforcing ring is of a circular structure and is installed on a single-pile drainage hole of the single pile 10, and the reinforcing ring is fixed with the single pile 10 in a welding mode. The inner cavity of the single pile 10 is communicated with the annular cavity through the through hole, and seawater in the annular cavity can enter the single pile 10 through the through hole and exchange with seawater in the single pile foundation. In order to eliminate the harm caused by the methane, the prior art adds an active air exhaust device above a single-pile foundation to realize the exchange between the air inside the single-pile foundation and the outside; according to the scheme, the through holes are formed in the lower portion of the single-pile foundation, so that the seawater inside and outside the single-pile foundation is communicated, and under the action of wave and ocean current loads, the seawater inside and outside the single-pile foundation flows and exchanges through compression and recovery movement of the damping pool, so that methane generated inside the single-pile foundation is prevented from corroding electric appliances and mechanical equipment inside a tower frame, and unit failure stop is caused.
In this embodiment, an annular safety barrier 30 is disposed on an outer wall of the sleeve 70 to prevent personnel and objects from falling when the operation and maintenance personnel log in the fan. In addition, safety barrier 30 is designed to ensure that safety barrier 30 remains above the sea surface in extremely high tide environments. As shown in fig. 7, safety barrier 30 is formed by splicing several barrier components. Each guardrail assembly comprises a railing 301, a skirting board 302 and a pedal 303, the railing 301, the skirting board 302 and the pedal 303 are connected together in a welding mode, the skirting board 302 is arranged between the railing 301 and the pedal 303, and one end, away from the railing 301, of the pedal 303 is fixed on the outer wall of the sleeve 70 in a welding or bolt connection mode.
As shown in fig. 6, an annular working platform is installed on the outer wall of the mono pile 10 to facilitate the safe passage of the fan for the operation and maintenance personnel. The working platform is located above the footplate 303 in the safety barrier 30 with a gap between the working platform and the footplate 303 of no less than 50mm (where the gap is balanced by the total weight of the balance sleeve etc. and the total buoyancy to which it is subjected). The working platform can limit the maximum height of the safety barrier, and a minimum gap is formed between the working platform and the pedal 303, so that the pedal 303 can be prevented from contacting the working platform, and the safety barrier 30 can rotate along with the sleeve 70. As shown in fig. 6, the working platform is formed by splicing a plurality of platform group plates 20, and the ends of the platform group plates 20 are fixed on the outer wall of the mono pile 10 by welding or bolting.
In this embodiment, after the sleeve 70 is sleeved on the mono-pile 10, since the inner diameter of the sleeve 70 is larger than the outer diameter of the mono-pile 10 (the gap design needs to take the marine environment of the sea area, the weight of the sleeve 70, the outer diameter of the mono-pile 10, and other factors into consideration), an annular cavity is formed between the sleeve 70 and the mono-pile 10, and seawater can enter the annular cavity.
As shown in fig. 16 and 17, a locking device 130 is mounted on the sleeve 70 for fixing the relative position between the sleeve and the monopile, and the locking device includes:
a fixing frame 1301, wherein the fixing frame 1301 is fixedly installed on the outer wall of the sleeve 70;
an elastic element 1303, wherein the elastic element 1303 is installed in the fixing frame 1301;
a locking rod 1302 installed in the fixing frame 1301, wherein a first end of the locking rod 1302 is fixedly connected with the elastic element 1303, and a second end of the locking rod 1302 penetrates through the side wall of the sleeve 70 and extends to the mono-pile 10;
a magnetic attraction device, which is mounted on the fixing frame 1301;
when the magnetic attraction means is not activated, the second end of the locking lever 1302 presses against the outer wall of the monopile 10 to fix the relative position between the sleeve 70 and the monopile 10; when the magnetic attraction means is activated, the locking lever 1302 is acted on by the elastic element 1303 and the magnetic attraction means and is separated from the monopile, so that the sleeve 70 can rotate on the monopile 10.
In this embodiment, the second end of the locking lever 1302 is formed by an arc-shaped plate integrally connected to the locking lever 1302, and the shape of the arc-shaped plate matches with that of the single pile (the center of the arc-shaped plate coincides with the center of the single pile 10), so as to ensure the fitting degree of the arc-shaped plate and the single pile.
After the ocean current power generation mode is turned on, the sleeve 70 is locked by the locking device 130 and cannot rotate. When the sleeve 70 is subjected to the load of waves and ocean currents, the sea water in the annular cavity body can shake to play a role of a damping pool, so that the fatigue load of partial waves and ocean currents on the mono-pile 10 is counteracted, and the shaking of the engine room, the blades and the like above the foundation is reduced.
After the ocean current generating mode is switched off, the sleeve 70 is opened for yaw hunting, at which time the locking device 130 between the sleeve 70 and the mono pile 10 is unlocked. The sleeve 70 may have a combined effect of rotation and shaking, and the seawater in the annular cavity may shake to act as a damping pool, thereby counteracting the fatigue load of some waves and ocean currents on the mono-pile 10 and reducing the shaking of the nacelle, blades and the like above the foundation.
The damping pool can reduce the fatigue load of the single-pile foundation and the vibration of the unit above the foundation, thereby reducing the weight of the single-pile foundation and the tower and saving the design cost.
As shown in fig. 2, 9 and 10, the support structure includes at least one annular buoyancy plate 50 mounted on an outer sidewall of the sleeve 70, and a plurality of pontoons 60 mounted on the buoyancy plate 50.
As shown in fig. 10, the buoy 60 can be formed by combining a plurality of floating modules, which are made of high density polyethylene as a main raw material and processed by a blow molding process. The float bowl 60 can be connected, fixed, combined, and installed in various shapes with the aid of other metal or plastic fittings (bolts) according to actual requirements or engineering design.
As shown in fig. 2, a mooring member 110 is mounted on the sleeve 70, and the mooring member 110 and the second ocean current power generation device 90 are respectively located on two sides of the first plane. As shown in fig. 14, the docking member 110 includes a docking member bracket 1101 and a plurality of bumper strings 1102, the bracket 1101 is fixed on the outer wall of the sleeve 70 in a welding manner, and the bumper strings 1102 are sleeved on the bracket 1101. The bracket 1101 is made of steel, and the anti-collision protective string 1102 is made of rubber with strong adsorption capacity.
As shown in fig. 2 and 15, a boarding ladder 120 is installed inside the docking member 110, and the upper end of the boarding ladder 120 extends above the safety fence 30 to facilitate the passage of air through the air conditioner by the maintenance personnel. The boarding ladder 120 is made of steel and can be fixed on the outer wall of the sleeve 70 by welding or bolting.
Under the influence of the factors such as earth deflection force, sea-land distribution, seasonal variation and the like, the directions of waves and ocean currents of an offshore wind farm may change every moment, the position of the mooring part 110 of the current offshore wind turbine foundation is fixed and unchanged, and when the angles of the directions of the waves and the ocean currents and the mooring part 110 are not proper, the operation and maintenance ship cannot be moored at a preset position, so that the operation and maintenance personnel are influenced to enter and exit the wind turbine. When the fan is in emergency, operation and maintenance personnel cannot board the airplane for operation and maintenance under the influence of waves and ocean currents, and huge potential safety hazards exist. The mooring element 110 and the second ocean current power generation device 90 in this embodiment are respectively located on two sides of the first plane; in design, an appropriate angle is set between the mooring member 110 and the second ocean current power generating device 90 in advance according to the conditions required for mooring the ship, and the preferred angle is 180 degrees, so that the operation and maintenance ship can sail and moor in the reverse flow. In order to obtain good ocean current power generation benefits, the first ocean current power generation device 40 always faces the ocean current in the forward direction, and meanwhile, the berthing piece 110 is ensured to be 180 degrees relative to the incoming current direction, so that the operation and maintenance ship can conveniently sail and berth in a countercurrent mode, the automatic yaw countercurrent of the berthing piece 110 is realized, and the working window period of operation and maintenance personnel is prolonged.
Based on the same inventive concept, the embodiment also provides a specific construction method, and the installation flow of the method is as follows:
fixing the lower limiting plate 80 on the outer wall of the mono-pile 10 by welding or bolting, and inserting the mono-pile 10 into the seabed 100 at a proper height by the action of the pile driving hammer;
fixing the buoyancy plate 50 on the outer wall of the sleeve 70 by welding or bolting, wherein the buoyancy plate 50 is preferably located at the center of the sleeve 70;
fixing the first ocean current power generation device 40 on the outer wall of the sleeve 70 through welding or bolt connection;
fixing the locking device 130 on the outer wall of the sleeve 70, and keeping the electromagnetic force device on the fixing frame 1301 open;
fixing a second ocean current power generation device 90 on the outer wall of the sleeve 70 through welding or bolt connection;
the docking member 110 is fixed to the outer wall of the sleeve 70 by a welded connection;
the boarding ladder stand 120 is fixed on the outer wall of the sleeve 70 in a welding or bolt connection mode;
fixing the safety barrier 30 on the outer wall of the sleeve 70 by welding or bolting;
sleeving the sleeve 70 on the single pile 10, wherein a certain gap is kept between the sleeve 70 and the lower limiting plate 80, and the preferred gap is not less than 100 mm;
the floating barrel 60 is fixed below the buoyancy plate 50 through bolts, so that the sleeve 70 is in a suspension state;
the working platform is fixed to the outer wall of the mono pile 10 by welding or bolting.
In this embodiment, the specific process of ocean current power generation is as follows:
1) receiving information transmitted by the ocean current instrument, and determining the direction of the ocean current and the required arrival angle of the first ocean current power generation device 40;
2) turning off the ocean current power generation modes of the second ocean current power generation device 90 and the first ocean current power generation device 40;
3) starting the electromagnetic attraction device on the fixing frame 1301 to unlock the sleeve 70 and the single pile 10;
4) starting a motor mode of the first ocean current generator 402, and driving the sleeve 70 to rotate around the monopile 10 through rotation of the first ocean current generator 402 under the action of an external power supply;
5) when the second ocean current power generation device 90 reaches a set angle, the electromagnetic attraction device on the fixing frame 1301 is closed, and the sleeve 70 and the single pile 10 are locked;
6) and starting the ocean current power generation modes of the first ocean current power generation device 40 and the second ocean current power generation device 90.
This embodiment still sets up first ocean current power generation facility and second ocean current power generation facility for current fan subassembly, can the energy of effectual utilization wave, ocean current.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (8)
1. A mono-pile foundation, comprising:
the sleeve is used for being rotatably sleeved on a single pile, wherein the inner diameter of the sleeve is larger than the outer diameter of the single pile, and an annular cavity is formed between the sleeve and the single pile;
a support structure mounted on the sleeve;
when the sleeve is placed in water, the support structure provides buoyancy to the sleeve to float the sleeve in the water;
wherein the annular cavity is configured such that when the sleeve is floating in water, seawater enters the annular cavity to form a damping pool;
the support structure includes: the buoyancy plate is arranged on the outer side wall of the sleeve and comprises a plurality of buoyancy barrels;
the sleeve is provided with a locking device for fixing the relative position between the sleeve and the single pile, and the locking device comprises:
the fixing frame is fixedly arranged on the outer wall of the sleeve;
the first end of the locking rod is positioned in the fixing frame, and the second end of the locking rod can sequentially penetrate through the side wall of the sleeve and is abutted against the single pile;
the elastic piece is arranged in the fixing frame and used for providing pressure for the first end of the locking rod so as to enable the second end of the locking rod to be pressed on the single pile;
a magnetic attraction device;
when the magnetic attraction device is not started, the second end of the locking rod presses on the single pile, and the relative position between the sleeve and the single pile is fixed; when the magnetic attraction device is started, the locking rod is under the attraction of the magnetic attraction device, the second end of the locking device is gradually separated from the single pile, and the sleeve can rotate on the single pile.
2. A mono-pile foundation as claimed in claim 1, wherein said sleeve has a lower stop plate mounted on its outer side wall for limiting said sleeve to a minimum height when said sleeve is placed over said mono-pile.
3. A mono-pile foundation as claimed in claim 1, wherein said sleeve has mounted thereon at least a first ocean current power generating means comprising:
at least two first radial supports at the upper and lower ends of the sleeve;
at least one first axial bracket mounted between two adjacent first radial brackets;
at least a first ocean current generator mounted on said first axial support.
4. A mono-pile foundation as claimed in claim 3, wherein the first radial support and the first axial support form a first plane, which is parallel to or coincident with the axis of the first ocean current generator.
5. The single-pile foundation of claim 1, wherein a plurality of through holes are formed in the outer side wall of the single pile, and the inner cavity of the single pile is communicated with the annular cavity through the through holes.
6. A mono-pile foundation as claimed in claim 3, wherein said sleeve has mounted thereon at least a second ocean current power generating means, said second ocean current power generating means comprising:
at least two second radial supports at the upper and lower ends of the sleeve;
at least one second axial bracket installed between two adjacent second radial brackets;
at least one second ocean current generator mounted on said second axial support.
7. The monopile foundation of claim 6, wherein the second axial bracket and the second axial bracket form a second plane that is perpendicular to an axial direction of the second ocean current generator.
8. A mono-pile foundation as claimed in claim 1, wherein the sleeve has a mooring element mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110041670.8A CN112878352B (en) | 2021-01-13 | 2021-01-13 | Single pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110041670.8A CN112878352B (en) | 2021-01-13 | 2021-01-13 | Single pile foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112878352A CN112878352A (en) | 2021-06-01 |
| CN112878352B true CN112878352B (en) | 2022-07-05 |
Family
ID=76045330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110041670.8A Active CN112878352B (en) | 2021-01-13 | 2021-01-13 | Single pile foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112878352B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2030213B1 (en) * | 2021-12-22 | 2023-06-29 | Sif Holding N V | Method and connecting ring for mounting a tower to a foundation pile, and a wind turbine generator |
| CN114016488B (en) * | 2021-12-29 | 2023-02-28 | 江苏龙源振华海洋工程有限公司 | Offshore booster station jacket construction process |
| CN116716911B (en) * | 2023-05-30 | 2025-03-28 | 中国能源建设集团广东省电力设计研究院有限公司 | A wind turbine single pile foundation auxiliary structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182635A (en) * | 2011-05-06 | 2011-09-14 | 河海大学 | Offshore renewable energy source comprehensive power generating system |
| CN203614313U (en) * | 2013-11-05 | 2014-05-28 | 集美大学 | Single-pile type wave energy and wind energy integral power generating device |
| CN107091193A (en) * | 2017-06-15 | 2017-08-25 | 大连理工大学 | Novel fixed-type wind energy and wave energy integrated power generation system |
| CN109610499A (en) * | 2018-12-07 | 2019-04-12 | 北京天杉高科风电科技有限责任公司 | Monopile foundation, offshore wind turbine with the monopile foundation, and installation method thereof |
| CN210315637U (en) * | 2018-08-28 | 2020-04-14 | 中国电建集团华东勘测设计研究院有限公司 | Offshore wind turbine single pile foundation with water purification function in pile |
-
2021
- 2021-01-13 CN CN202110041670.8A patent/CN112878352B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182635A (en) * | 2011-05-06 | 2011-09-14 | 河海大学 | Offshore renewable energy source comprehensive power generating system |
| CN203614313U (en) * | 2013-11-05 | 2014-05-28 | 集美大学 | Single-pile type wave energy and wind energy integral power generating device |
| CN107091193A (en) * | 2017-06-15 | 2017-08-25 | 大连理工大学 | Novel fixed-type wind energy and wave energy integrated power generation system |
| CN210315637U (en) * | 2018-08-28 | 2020-04-14 | 中国电建集团华东勘测设计研究院有限公司 | Offshore wind turbine single pile foundation with water purification function in pile |
| CN109610499A (en) * | 2018-12-07 | 2019-04-12 | 北京天杉高科风电科技有限责任公司 | Monopile foundation, offshore wind turbine with the monopile foundation, and installation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112878352A (en) | 2021-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112878352B (en) | Single pile foundation | |
| KR101933168B1 (en) | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of offshore wind turbines | |
| CN104401458B (en) | Semi-submersible type floating fan base and floating fan | |
| Musial et al. | Feasibility of floating platform systems for wind turbines | |
| JP6562928B2 (en) | Floating windmill support system | |
| US8197208B2 (en) | Floating underwater support structure | |
| EP2993270B1 (en) | Submersible structure for actively supporting towers of generators and sub-stations or similar elements, in maritime facilities | |
| RU2607713C2 (en) | Floating structure fluid dynamic force use system and wind-propelled vessel | |
| Bagbanci et al. | Review of offshore floating wind turbines concepts | |
| US8169093B2 (en) | Method and apparatus for extracting energy from wind and wave motion | |
| CN107021190A (en) | Can be from the floating tension leg type offshore floating wind turbine foundation installed and its installation method | |
| US20130152839A1 (en) | System of anchoring and mooring of floating wind turbine towers and corresponding methods for towing and erecting thereof | |
| US8439641B2 (en) | Flow driven engine | |
| EP3902995A2 (en) | Shallow draft, wide-base floating wind turbine without nacelle | |
| US20140322012A1 (en) | Flow Driven Engine | |
| KR101202156B1 (en) | Floating windgenerator | |
| JP6721886B2 (en) | Axial structure of floating body support shaft and floating power generation apparatus having the axial structure of the floating body support shaft | |
| KR102523952B1 (en) | Tower-integrated offshore wind-force floating body and its manufacturing method | |
| WO2019190387A1 (en) | A floating vertical axis wind turbine with peripheral water turbine assemblies and a method of operating such | |
| KR20240173279A (en) | Floating vertical axis wind turbine | |
| Maimon | Brief review about floating offshore wind turbines projects | |
| JP7620364B1 (en) | Offshore wind power generation device and method for manufacturing the same | |
| Zhang et al. | Preliminary analysis on integrated transportation technique for offshore wind turbines | |
| CN119664580A (en) | A wind-wave-current integrated power generation device based on a new type of semi-submersible floating platform | |
| RU2069275C1 (en) | Wave-electric power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |