CN110778459A - Arc-shaped anti-icing wind power foundation - Google Patents
Arc-shaped anti-icing wind power foundation Download PDFInfo
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- CN110778459A CN110778459A CN201911136993.4A CN201911136993A CN110778459A CN 110778459 A CN110778459 A CN 110778459A CN 201911136993 A CN201911136993 A CN 201911136993A CN 110778459 A CN110778459 A CN 110778459A
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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
- F03D13/22—Foundations specially adapted for wind motors
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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
- F03D80/40—Ice detection; De-icing means
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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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- 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
- Y02E10/728—Onshore wind turbines
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to an arc-shaped anti-icing wind power foundation which comprises an upper foundation with a smaller transverse size, a middle foundation and a lower foundation with a larger transverse size; the whole middle foundation is in an inverted cone shape or a horn shape with a small upper part and a big lower part, the middle foundation comprises an arc-shaped main pile leg, the arc-shaped main pile leg is in an arc shape, and the cross section of the arc-shaped main pile leg is in a shuttle shape; the shuttle-shaped cross section is divided into a long shaft and a short shaft, and when the ice rows act on the arc-shaped pile legs in the direction parallel to the short shaft of the cross section, the ice rows are forced to generate a bending failure mode; when the ice row acts on the arc-shaped pile leg in the direction parallel to the long axis of the cross section, the tip of the arc-shaped pile leg forms an anti-ice mode that the ice breaking blade cuts the ice row.
Description
Technical Field
The invention relates to an arc-shaped wind power foundation structure, which is particularly applied to a cold region sea area needing ice resistance.
Background
With the exhaustion of petroleum resources and the desire of human beings for clean energy, offshore wind power technology is gaining favor of various countries. The sea area in cold region is concerned by the large wind energy density and the abundant wind resource. However, offshore wind power foundations installed in cold regions are inevitably subjected to sea ice loads.
The offshore wind power foundation mainly reduces the effect of ice load by adding an ice cone, the principle is that the ice load and the extrusion failure mode of a vertical pile are converted into a bending failure mode through the inclination of the ice cone, and the bending strength of sea ice is far lower than the extrusion strength, so that the ice force in the bending mode is far smaller than the extrusion ice force.
At present, the measure of installing the ice resisting cone is mainly applied to a single-pile wind power foundation, however, the measure is difficult to apply to a jacket type wind power foundation, because the leg distance of a jacket pile leg of the wind power foundation at the average sea level is small, and the maximum diameter of the ice resisting cone is often very large enough to ensure that the ice resisting effect is achieved at high and low water levels. Obviously, this kind of big ice awl that can play anti ice effect is installed on jacket wind-powered electricity generation basis, will lead to remaining space between the wind-powered electricity generation foundation spud leg to be not enough to let sea ice pass through smoothly, and then causes the pile up incident of ice row, seriously threatens the safety of fan structure. In addition, the installation of the large-scale ice cone increases the wave flow load on the basis of the fan, and is not beneficial to the safe operation of the fan in the non-ice period. Therefore, the offshore anti-ice wind power foundation structure without the need of installing the anti-ice cone is designed, and the important significance is achieved for ensuring the safe operation of the fan in the ice area sea area.
Disclosure of Invention
The invention provides an offshore wind power foundation structure which does not need to be provided with an anti-ice cone and has anti-ice performance, and solves the anti-ice problem of an offshore wind power foundation in an ice region. The invention is realized by the following technical scheme:
an arc-shaped anti-icing wind power foundation comprises an upper foundation with a smaller transverse dimension, a middle foundation and a lower foundation with a larger transverse dimension; the whole middle foundation is in an inverted cone shape or a horn shape with a small upper part and a big lower part, the middle foundation comprises an arc-shaped main pile leg, the arc-shaped main pile leg is in an arc shape, and the cross section of the arc-shaped main pile leg is in a shuttle shape; the shuttle-shaped cross section is divided into a long shaft and a short shaft, and when the ice rows act on the arc-shaped pile legs in the direction parallel to the short shaft of the cross section, the ice rows are forced to generate a bending failure mode; when the ice row acts on the arc-shaped pile leg in the direction parallel to the long axis of the cross section, the tip of the arc-shaped pile leg forms an anti-ice mode that the ice breaking blade cuts the ice row.
Preferably, the upper foundation includes an upper layer of cylindrical main legs and the upper foundation includes a lower layer of cylindrical main legs.
The upper part of the arc-shaped main pile leg is connected with the corresponding upper-layer cylindrical main pile leg through an upper-layer horizontal support and a transition connector, and the lower part of the arc-shaped main pile leg is connected with the corresponding lower-layer cylindrical main pile leg through a lower-layer horizontal support and a transition connector.
The interior of the transition joint is reinforced by a hub type reinforcing plate.
The upper horizontal support comprises a horizontal outer support. The lower horizontal support comprises horizontal outer supports, and horizontal inner supports are arranged between the horizontal outer supports.
And a reinforcing plate is arranged inside the arc-shaped main pile leg.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the wind power foundation structure can realize the anti-icing effect without installing the anti-icing cone, thereby avoiding a plurality of problems caused by installing the anti-icing cone; 2. according to the main pile leg with the tidal range section arc line type plus 'shuttle' type cross section, the load acting on ice in any direction is reduced by forcing the ice rows to generate bending damage, cutting damage and a composite damage mode of the bending damage and the cutting damage; 3. the main pile leg of the tidal range section is small in size relative to the anti-ice cone, broken ice can be more easily slipped off, and the shuttle-shaped side surface can effectively guide the broken ice to smoothly drift, so that the possibility of the broken ice staying and accumulating in front of the pile leg is greatly reduced; 4. the tidal range section structure only consists of the main pile legs, and does not have horizontal bracing and inclined bracing, so that structural components are simplified to the greatest extent, ice load can be effectively reduced, circulation of crushed ice is facilitated, wave current load can be greatly reduced, dynamic response of the fan structure is reduced, and fatigue life of the fan structure is prolonged.
Drawings
FIG. 1 is a front view of a wind turbine infrastructure of the present invention.
FIG. 2 is a top view of a horizontal layer of a wind turbine infrastructure of the present invention.
FIG. 3 is a schematic illustration of the ice loading effect of the present invention.
The reference numbers in the figures illustrate: 1 is a cylindrical main pile leg; 2 is a horizontal external support; 3 is a transition connector; 4 is an arc main pile leg; 5 is a reinforcing rib; 6 is an inclined strut; 7 is an internal reinforcing plate of the arc main pile leg; 8, horizontal internal bracing; and 9 is a hub type reinforcing plate.
Detailed Description
The invention is further explained with reference to the drawings and the embodiments.
As shown in fig. 1 and 2, the present invention mainly comprises a cylindrical main leg 1; a horizontal outer support 2; a transition joint 3; three arc-shaped main spud legs 4; a reinforcing rib 5; a diagonal brace 6; an inner reinforcing plate 7 of the arc-shaped main pile leg; a horizontal inner support 8; a hub type reinforcing plate 9.
As shown in fig. 1, the upper part of a cylindrical main pile leg 1 of the invention is connected with a fan transition section to support the upper structures of a fan tower, a cabin and blades; the cylindrical main pile leg 1 is connected with the arc-shaped main pile leg 4 through a transition connector 3; the arc-shaped main pile leg 4 covers the whole tidal range section, namely the main pile leg between the upper horizontal layer EL + A and the lower horizontal layer EL-B is arc-shaped, and the arc-shaped main pile leg forms a certain included angle with the horizontal plane in the tidal range section to form a slope surface, so that the configuration condition that the ice bank is bent and damaged is realized; the recommended value of the included angle between the tangent line of the arc-shaped main pile leg in the tidal range section and the horizontal plane is 30-65 degrees; the arc-shaped main pile leg 4 is connected with the lower cylindrical main pile leg through the transition connector 3; the horizontal layer EL + A and the horizontal layer EL-B are connected with a transition connector 3 through a horizontal outer support 2; a horizontal inner support 8 is additionally arranged in the middle of the horizontal outer support 2 of the horizontal layer EL-B; the horizontal layer EL-C is composed of a horizontal outer support 2 and a horizontal inner support 8; the inclined struts 6 are additionally arranged among the horizontal layers EL-B and the horizontal layers EL-C for connection; therefore, a three-dimensional space frame structure is formed, and the offshore anti-ice wind turbine foundation is formed.
As shown in fig. 1, the arc-shaped main leg 4 has a cross section of a shuttle type, and the strength and rigidity of the arc-shaped main leg are improved by welding an internal reinforcing plate 7 inside the arc-shaped main leg, as shown in a-a section in fig. 1; a plurality of reinforcing ribs 5 are welded between the arc-shaped main pile leg 4 and the transition connector 3, so that the connection strength is improved in advance, and the load transmission path is improved.
As shown in fig. 2, the interior of the transition joint 3 is reinforced by a hub type reinforcing plate 9; the hub type reinforcing plate 9 is formed by welding concentric cylinders and a radial plate.
As shown in fig. 3, when the ice row acts on the arc-shaped main leg 4, different ice breaking mechanisms are formed according to different ice directions to achieve the purpose of ice resistance, specifically: when the ice rows act along the negative direction of the y axis, the slope surface is formed due to the arc shape of the arc-shaped main pile leg 1, and the ice rows are bent upwards to break the mode; when the ice row acts in the positive direction along the y axis, the arc-shaped main pile leg 1 and the ice row interact to form a downward pressing type structure, so that the ice row has an inverted cone function, and the ice row is promoted to generate a downward bending failure mode; when the ice rows act in the positive direction of the x axis, the ice rows interact with the tips of the arc-shaped main pile legs 1, due to the shuttle-shaped cross section of the arc-shaped main pile legs 4, an ice breaking mode for cutting the ice rows is formed, the ice rows are promoted to crack, the internal damage fields of the ice rows are greatly formed, and the effective acting area of the ice rows and the arc-shaped main pile legs 1 is the minimum at the moment, so that the ice resisting effect of reducing the ice load is achieved; when the acting direction of the ice row is between the positive direction of the x axis and the positive direction of the y axis, the ice row generates a composite damage mode of bending and splitting; therefore, when ice is formed in any direction, the arc-shaped main pile leg 1, the arc-shaped main pile leg 2 and the arc-shaped main pile leg 3 can reduce ice load respectively, and the combined ice breaking mode caused by the joint effect among the pile legs promotes the damage in the ice in advance to cause non-simultaneous damage effect, so that the ice load of the whole structure is greatly reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. An arc-shaped anti-icing wind power foundation comprises an upper foundation with a smaller transverse dimension, a middle foundation and a lower foundation with a larger transverse dimension; the whole middle foundation is in a shape of an inverted cone or a horn with a small upper part and a big lower part, the middle foundation comprises an arc-shaped main pile leg, the arc-shaped main pile leg is in an arc shape, and the cross section of the arc-shaped main pile leg is in a shuttle shape. The shuttle-shaped cross section is divided into a long shaft and a short shaft, and when the ice rows act on the arc-shaped pile legs in the direction parallel to the short shaft of the cross section, the ice rows are forced to generate a bending failure mode; when the ice row acts on the arc-shaped pile leg in the direction parallel to the long axis of the cross section, the tip of the arc-shaped pile leg forms an anti-ice mode that the ice breaking blade cuts the ice row.
2. The wind power foundation of claim 1, wherein the upper foundation includes an upper layer of cylindrical main legs and the upper foundation includes a lower layer of cylindrical main legs.
3. The wind power foundation of claim 2, wherein the upper part of the arc-shaped main pile leg is connected with the corresponding upper cylindrical main pile leg through an upper horizontal support and a transition connector, and the lower part of the arc-shaped main pile leg is connected with the corresponding lower cylindrical main pile leg through a lower horizontal support and a transition connector.
4. The wind power foundation of claim 3, wherein the interior of the transition joint is reinforced by a hub-type reinforcement plate.
5. The wind power foundation of claim 3, wherein the upper horizontal brace comprises a horizontal outer brace.
6. The wind power foundation of claim 3, wherein the lower horizontal braces comprise horizontal outer braces between which horizontal inner braces are disposed.
7. The wind power foundation of any one of claims 1-6, wherein a reinforcing plate is arranged inside the arc-shaped main pile leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136993.4A CN110778459B (en) | 2019-11-19 | 2019-11-19 | Arc-shaped anti-icing wind power foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136993.4A CN110778459B (en) | 2019-11-19 | 2019-11-19 | Arc-shaped anti-icing wind power foundation |
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| Publication Number | Publication Date |
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| CN110778459A true CN110778459A (en) | 2020-02-11 |
| CN110778459B CN110778459B (en) | 2020-11-10 |
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| CN201911136993.4A Active CN110778459B (en) | 2019-11-19 | 2019-11-19 | Arc-shaped anti-icing wind power foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727699A (en) * | 2021-01-18 | 2021-04-30 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind turbine foundation, construction method thereof, anti-icing device and wind turbine generator system |
Citations (7)
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|---|---|---|---|---|
| JPS61266715A (en) * | 1985-05-17 | 1986-11-26 | Mitsui Eng & Shipbuild Co Ltd | Structure for icy sea |
| JPS62182309A (en) * | 1986-02-04 | 1987-08-10 | Mitsubishi Heavy Ind Ltd | Structure for icy sea |
| WO2013122547A2 (en) * | 2012-02-15 | 2013-08-22 | Keppel Offshore & Marine Technology Centre Pte Ltd | Riser protection structures |
| KR20140040906A (en) * | 2012-09-27 | 2014-04-04 | 현대중공업 주식회사 | Ice collision preventing structure of half-submerging drilling ship |
| CN102926399B (en) * | 2012-11-13 | 2014-11-12 | 国电联合动力技术有限公司 | Offshore fan pile foundation design method and application thereof |
| CN108118673A (en) * | 2018-01-02 | 2018-06-05 | 大连理工大学 | A kind of icebreaking device for improving flexible cone offshore platform structure anti-ice performance |
| CN207813823U (en) * | 2017-12-20 | 2018-09-04 | 江苏科技大学 | A kind of polar region wind power generation plant with anti-ice performance |
-
2019
- 2019-11-19 CN CN201911136993.4A patent/CN110778459B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61266715A (en) * | 1985-05-17 | 1986-11-26 | Mitsui Eng & Shipbuild Co Ltd | Structure for icy sea |
| JPS62182309A (en) * | 1986-02-04 | 1987-08-10 | Mitsubishi Heavy Ind Ltd | Structure for icy sea |
| WO2013122547A2 (en) * | 2012-02-15 | 2013-08-22 | Keppel Offshore & Marine Technology Centre Pte Ltd | Riser protection structures |
| KR20140040906A (en) * | 2012-09-27 | 2014-04-04 | 현대중공업 주식회사 | Ice collision preventing structure of half-submerging drilling ship |
| CN102926399B (en) * | 2012-11-13 | 2014-11-12 | 国电联合动力技术有限公司 | Offshore fan pile foundation design method and application thereof |
| CN207813823U (en) * | 2017-12-20 | 2018-09-04 | 江苏科技大学 | A kind of polar region wind power generation plant with anti-ice performance |
| CN108118673A (en) * | 2018-01-02 | 2018-06-05 | 大连理工大学 | A kind of icebreaking device for improving flexible cone offshore platform structure anti-ice performance |
Non-Patent Citations (2)
| Title |
|---|
| 张大勇等: "冰区海上风电基础的抗冰性能分析", 《船舶力学》 * |
| 田育丰: "渤海海域导管架式风电结构冰激振动分析", 《海峡科技与产业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727699A (en) * | 2021-01-18 | 2021-04-30 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind turbine foundation, construction method thereof, anti-icing device and wind turbine generator system |
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| CN110778459B (en) | 2020-11-10 |
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