CN113202060A - Offshore wind power foundation anti-scouring system and method of multi-layer grid strip-shaped structure - Google Patents
Offshore wind power foundation anti-scouring system and method of multi-layer grid strip-shaped structure Download PDFInfo
- Publication number
- CN113202060A CN113202060A CN202110626848.5A CN202110626848A CN113202060A CN 113202060 A CN113202060 A CN 113202060A CN 202110626848 A CN202110626848 A CN 202110626848A CN 113202060 A CN113202060 A CN 113202060A
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- offshore wind
- wind power
- power foundation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
- E02B3/26—Fenders
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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
- E02D27/52—Submerged foundations, i.e. submerged in open water
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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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- 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
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- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Hydrology & Water Resources (AREA)
- Wind Motors (AREA)
Abstract
The invention provides an offshore wind power foundation anti-scouring system and method with a multilayer grid strip structure, wherein the system comprises a plurality of grid strips; each grid belt comprises a plurality of grid layers, and each grid layer consists of a plurality of grid units; each grid unit is formed by surrounding a plurality of grids; each grid is vertically fixed between two upright posts through a connecting device. The invention reduces the flow velocity of water flow through the grating, blocks the flow of silt close to the bottom layer of the seabed, and finally achieves the purpose of preventing the scour of the foundation; the multi-layer grid structure enhances the flow blocking rigidity of the grating and can provide a basic anti-scouring effect in a sea current environment with variable flow directions; the arrangement of the plurality of grating belts further enhances the anti-scouring effect of the underwater foundation.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to an offshore wind power foundation anti-scouring system and method with a multi-layer grid strip-shaped structure.
Background
The periphery of the offshore wind power foundation is easily influenced by seabed water flow to form a scouring pit, so that the burial depth of the foundation is reduced, and the safe and stable operation of a wind turbine is influenced. At present, offshore wind power foundation anti-scour measures are divided into active protection and passive protection. Active protection generally achieves the anti-scouring purpose by reducing the flow velocity of water in a protection area, such as protection of a base front deflector and the like. Passive protection is achieved by laying a protective layer within the confines of the foundation to improve erosion resistance, such as by laying rocks, concrete blocks, sandbags, concrete hinge rows, etc. within the protected area. The conventional offshore wind power foundation anti-scouring measures generally have the problems of high construction cost and general protection effect.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an offshore wind power foundation anti-scouring system and method with a multi-layer grid strip structure, which can reduce the flow velocity of water in a protection area, block the flow of silt and achieve the aim of preventing scouring of the foundation.
In order to achieve the purpose, the invention adopts the following technical scheme:
an offshore wind power foundation anti-scouring system with a multilayer grid belt structure comprises a plurality of grid belts; each grid belt comprises a plurality of grid layers, and each grid layer consists of a plurality of grid units; each grid unit is formed by surrounding a plurality of grids;
each grid is vertically fixed between two upright posts through a connecting device.
The invention further improves the following steps: the grid is made of corrosion-resistant metal or fiber; the porosity of the grid is 20% -50%.
The invention further improves the following steps: the upright column is a corrosion-resistant metal column body and can be buried in a seabed.
The invention further improves the following steps: the connecting device is a corrosion-resistant metal connecting piece; the side wall of the connecting device is provided with a plurality of wedge ports; the grid is mounted in a wedge of a corresponding connection device.
The invention further improves the following steps: the cross section of the connecting device is square or round; the center of the connecting device is provided with a through hole; the upright post is installed in the through hole.
The invention further improves the following steps: the section of the wedge opening is rectangular or trapezoidal.
The invention further improves the following steps: one or more grid strips are arranged along the dominant flow direction of the seabed water flow in front of the offshore wind power foundation.
The invention further improves the following steps: the grid bands are arranged in a non-equidistant mode, and the interval of adjacent layers along the dominant flow direction is gradually increased.
The invention further improves the following steps: the water flow direction separation device comprises three grating belts, the width of each grating belt is L, the distance between a first grating belt and a second grating belt along the water flow direction is L1, the distance between a second grating belt and a third grating belt along the water flow direction is L2, and L2 is larger than or equal to L1 and larger than or equal to L.
An offshore wind power foundation anti-scouring method of a multilayer grid strip structure comprises the following steps:
arranging one or more grid belts along the dominant flow direction of the seabed water flow in front of the offshore wind power foundation;
through the multilayer grid in the grid area, reduce the velocity of flow, block the silt that is close to the seabed bottom and flow, reduce the scouring of silt flow to offshore wind power basis.
Compared with the prior art, the invention has the following advantages:
the invention reduces the flow velocity of water flow through the grating, blocks the flow of silt close to the bottom layer of the seabed, and finally achieves the aim of preventing the scour of the foundation.
According to the invention, through the multilayer grid structure, the flow blocking rigidity of the grid is enhanced, and the foundation anti-scouring effect can be provided under the ocean current environment with variable flow directions.
The invention further enhances the anti-scouring effect of the underwater foundation by arranging the plurality of grating zones.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of an offshore wind power foundation anti-scouring system with a multi-layer grid strip structure according to the invention.
Fig. 2 is a schematic cross-sectional view of a connecting device of an offshore wind power foundation anti-scouring system with a multi-layer grid strip structure according to the invention.
Fig. 3 is a schematic cross-sectional view of another connection device of the offshore wind power foundation anti-scouring system with the multi-layer grid belt-shaped structure.
Fig. 4 is a schematic layout view of a plurality of grating belts of the offshore wind power foundation anti-scouring system with a multi-layer grid belt structure of the invention.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Example 1
Referring to fig. 1, an offshore wind power foundation anti-erosion system with a multi-layer grid band structure includes a plurality of grid bands 100; each grid belt 100 comprises a plurality of grid layers 101, and each grid layer 101 consists of a plurality of grid units 102; each grid unit is formed by surrounding a plurality of grids 1;
each grid 1 is vertically fixed between two upright posts 2 through a connecting device 3; the enclosed space enclosed by the grids 1 is a grid unit 102.
The grid 1 is made of corrosion-resistant metal materials or high-strength fiber materials, and the porosity of the grid is 20% -50%.
The upright post 2 is a corrosion-resistant metal cylinder, is buried in the seabed and fixed, and can be round, square or other shapes in cross section.
Referring to fig. 2 and 3, the connecting device 3 is a corrosion-resistant metal connecting piece, the cross section of the connecting device is square or circular with a wedge 31, and a through hole 30 is formed in the center of the connecting device 3; the cross-sectional shape of the through-hole 30 conforms to the cross-sectional shape of the pillar 2. The upright post 2 is in interference fit with the through hole 30. The section of the wedge 31 is rectangular or trapezoidal; the arrangement is trapezoidal and can be interlocked with the trapezoidal matching of the edge of the grille 1, and the grille 1 is prevented from being separated from the connecting device 3 by force.
And the grid units are connected into a whole through the connecting device 3 and are fixed on the seabed through the upright posts 2.
The cross section of the grid cell can be square, rectangular, hexagonal or other shapes.
The length, width and height of the grid belt can be spliced and adjusted according to the flow speed of the seabed water and the space environment.
One or more grid belts can be arranged in front of the underwater foundation of the fan and along the dominant flow direction of the water flow at the bottom of the sea.
Example 2
The grid strips can be arranged in a non-equidistant arrangement mode, and the intervals of adjacent layers along the dominant flow direction are gradually increased.
Referring to fig. 4, an offshore wind power foundation anti-scour system with a multi-layer grid band structure adopts three grid bands, the width of each grid band is L, the distance between a first grid band and a second grid band along the water flow direction is L1, the distance between a second grid band and a third grid band along the water flow direction is L2, and the relationship that L2 is greater than or equal to L1 is greater than or equal to L is satisfied.
Example 3
The invention also provides an offshore wind power foundation anti-scouring method of the multilayer grid strip-shaped structure, and the offshore wind power foundation anti-scouring system of the multilayer grid strip-shaped structure based on the embodiment 1 or the embodiment 2 comprises the following steps:
arranging one or more grid belts along the dominant flow direction of the seabed water flow in front of the offshore wind power foundation; through the multilayer grid in the grid area, reduce the velocity of flow, block the silt that is close to the seabed bottom and flow, reduce the scouring of silt flow to offshore wind power basis.
Specifically, in each grid band:
step one, seawater flows through a first layer of grid units of a grid belt, silt in the seawater is blocked by grids 1 in the first layer of grid units, and the collision flow velocity of the seawater and the grids 1 in the first layer of grid units is reduced;
step two, the seawater passing through the first layer of grid units needs to flow through a second layer of grid units of the grid belt, silt in the seawater is blocked by the grids 1 in the second layer of grid units, and the collision flow speed of the seawater and the grids 1 in the second layer of grid units is reduced for the second time;
step three, the seawater passing through the second layer of grid units needs to flow through a third layer of grid units of the grid belt, silt in the seawater is blocked by the grids 1 in the third layer of grid units, and the collision flow speed of the seawater and the grids 1 in the third layer of grid units is reduced for the third time.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. An offshore wind power foundation anti-scouring system with a multilayer grid belt-shaped structure is characterized by comprising a plurality of grid belts (100); each grid belt (100) comprises a plurality of grid layers (101), and each grid layer (101) consists of a plurality of grid units (102); each grid unit (102) is formed by surrounding a plurality of grids (1);
each grid (1) is vertically fixed between two upright posts (2) through a connecting device (3).
2. Offshore wind power foundation anti-scour system according to claim 1, wherein the grating (1) is made of corrosion-resistant metal or fabric; the porosity of the grid (1) is 20-50%.
3. Offshore wind power foundation anti-scour system according to claim 1, wherein the columns (2) are corrosion-resistant metal cylinders, which can be buried in the seabed.
4. Offshore wind power foundation anti-scour system with a multi-layer grid belt structure, according to claim 1, characterized in that the connection means (3) are corrosion-resistant metal connections; the side wall of the connecting device (3) is provided with a plurality of wedge ports (31); the grid (1) is mounted in a wedge (31) corresponding to the connecting device (3).
5. Offshore wind power foundation anti-scour system with a multi-layer grid belt structure, according to claim 4, characterized in that the cross-sectional shape of the connection means (3) is square or circular; a through hole (30) is arranged in the center of the connecting device (3); the upright post (2) is mounted in the through hole (30).
6. Offshore wind power foundation anti-scour system according to claim 4, wherein the wedge (31) has a rectangular or trapezoidal cross-section.
7. Offshore wind farm anti-scour system according to claim 1, wherein one or more grating strips (100) are arranged in front of the offshore wind farm along the prevailing direction of the subsea current.
8. Offshore wind power foundation anti-scour system according to claim 7, wherein the plurality of grating strips (100) are arranged at unequal intervals and the spacing of adjacent layers in the main flow direction increases gradually.
9. An offshore wind power foundation anti-scouring system with a multi-layer grid belt-shaped structure as claimed in claim 7, characterized by comprising three grid belts, wherein the width of each grid belt is L, the distance between the first grid belt and the second grid belt along the water flow direction is L1, the distance between the second grid belt and the third grid belt along the water flow direction is L2, and L2 is more than or equal to L1 and more than or equal to L.
10. An offshore wind power foundation anti-scouring method of a multilayer grid belt-shaped structure, characterized in that the offshore wind power foundation anti-scouring system of the multilayer grid belt-shaped structure based on any one of claims 1 to 9 comprises the following steps:
arranging one or more grid strips (100) along the predominant flow direction of the subsea current in front of the offshore wind power foundation;
through multilayer grid (1) in the grid area, reduce the velocity of flow, block the silt that is close to the seabed bottom and flow, reduce the scouring of silt flow to offshore wind power basis.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626848.5A CN113202060A (en) | 2021-06-04 | 2021-06-04 | Offshore wind power foundation anti-scouring system and method of multi-layer grid strip-shaped structure |
| PCT/CN2021/114654 WO2022252410A1 (en) | 2021-06-04 | 2021-08-26 | Multigrid belt structure-based anti-scour system and method for offshore wind turbine foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626848.5A CN113202060A (en) | 2021-06-04 | 2021-06-04 | Offshore wind power foundation anti-scouring system and method of multi-layer grid strip-shaped structure |
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| Publication Number | Publication Date |
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| CN113202060A true CN113202060A (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110626848.5A Pending CN113202060A (en) | 2021-06-04 | 2021-06-04 | Offshore wind power foundation anti-scouring system and method of multi-layer grid strip-shaped structure |
Country Status (2)
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| CN (1) | CN113202060A (en) |
| WO (1) | WO2022252410A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370043A (en) * | 2021-12-31 | 2022-04-19 | 中国电建集团海南电力设计研究院有限公司 | Booster station fixing device capable of buffering sea wave impact |
| CN115142427A (en) * | 2022-09-06 | 2022-10-04 | 中天科技集团海洋工程有限公司 | Stone-throwing anti-scouring construction process for offshore wind power foundation |
| WO2022252410A1 (en) * | 2021-06-04 | 2022-12-08 | 中国华能集团清洁能源技术研究院有限公司 | Multigrid belt structure-based anti-scour system and method for offshore wind turbine foundation |
| CN115492155A (en) * | 2022-09-26 | 2022-12-20 | 广东华蕴海上风电科技有限公司 | Construction method of sand gathering device for preventing scouring of offshore wind power foundation |
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| CN101469545A (en) * | 2007-12-24 | 2009-07-01 | 黎彪钦 | Tenon joint type spatial mesh structure |
| PT2354535E (en) * | 2009-12-29 | 2012-08-31 | Kyowa Co Ltd | Method for constructing a foundation for a wind power generation system |
| CN202039330U (en) * | 2011-06-10 | 2011-11-16 | 无锡市智者水生态环境工程有限公司 | Wave-dissipating device |
| CN105862684B (en) * | 2016-06-03 | 2018-10-09 | 国网新疆电力公司疆南供电公司 | Grid energy dissipation type flood discharge device |
| CN107044111B (en) * | 2017-01-09 | 2020-11-06 | 山东大学 | Three-dimensional grid structure for draining water gravity dam energy dissipation and energy dissipation method |
| CN106869191A (en) * | 2017-04-17 | 2017-06-20 | 中山市华蕴新能源科技有限公司 | Offshore wind turbine foundation anti-scouring protection device and system thereof |
| CN206655244U (en) * | 2017-04-17 | 2017-11-21 | 中山市华蕴新能源科技有限公司 | Anti-scouring bionic grass structure and offshore wind turbine foundation anti-scouring protection device |
| CN107881982B (en) * | 2017-12-02 | 2023-01-17 | 中国海洋大学 | Beach section protector |
| CN113202060A (en) * | 2021-06-04 | 2021-08-03 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power foundation anti-scouring system and method of multi-layer grid strip-shaped structure |
-
2021
- 2021-06-04 CN CN202110626848.5A patent/CN113202060A/en active Pending
- 2021-08-26 WO PCT/CN2021/114654 patent/WO2022252410A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252410A1 (en) * | 2021-06-04 | 2022-12-08 | 中国华能集团清洁能源技术研究院有限公司 | Multigrid belt structure-based anti-scour system and method for offshore wind turbine foundation |
| CN114370043A (en) * | 2021-12-31 | 2022-04-19 | 中国电建集团海南电力设计研究院有限公司 | Booster station fixing device capable of buffering sea wave impact |
| CN114370043B (en) * | 2021-12-31 | 2024-02-27 | 中国电建集团海南电力设计研究院有限公司 | Can cushion booster station fixing device that wave impacted |
| CN115142427A (en) * | 2022-09-06 | 2022-10-04 | 中天科技集团海洋工程有限公司 | Stone-throwing anti-scouring construction process for offshore wind power foundation |
| CN115492155A (en) * | 2022-09-26 | 2022-12-20 | 广东华蕴海上风电科技有限公司 | Construction method of sand gathering device for preventing scouring of offshore wind power foundation |
| CN115492155B (en) * | 2022-09-26 | 2023-08-22 | 广东华蕴海上风电科技有限公司 | Construction method of sand gathering device for scour prevention of offshore wind power foundation |
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| Publication number | Publication date |
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| WO2022252410A1 (en) | 2022-12-08 |
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