CN113086115A - Shallow sea wind power semi-submersible platform provided with anti-heaving stand column - Google Patents
Shallow sea wind power semi-submersible platform provided with anti-heaving stand column Download PDFInfo
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- CN113086115A CN113086115A CN202110522468.7A CN202110522468A CN113086115A CN 113086115 A CN113086115 A CN 113086115A CN 202110522468 A CN202110522468 A CN 202110522468A CN 113086115 A CN113086115 A CN 113086115A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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Abstract
The utility model provides a set up shallow sea wind-powered electricity generation semi-submerged platform of anti column that dangles, it belongs to the ocean engineering field. The anti-heaving upright column is formed by butting a lower column body and an upper platform body which are positioned on the same axis, wherein the downward small end of the upper platform body is connected with the lower column body, and the connecting surface formed at the butting position is the water line surface of the semi-submersible offshore wind power platform under the normal working condition. The top surface of the upper platform body can be used for placing a wind driven generator tower, and the lower column body is immersed in water to provide certain buoyancy for the wind power platform. Compared with a common column type semi-submersible platform, the semi-submersible offshore wind power platform applying the anti-heaving column has better hydrodynamic performance, the column structure expanding upwards from the middle can effectively prevent the deck of the platform from rising, can also reduce the heaving motion response of the platform, and reduces the mooring looseness and even bottoming problem of a mooring system of the platform caused by larger draft change in a shallow water working sea area, thereby improving the safety and durability of the shallow sea wind power platform.
Description
Technical Field
The invention relates to a shallow sea wind power semi-submersible platform provided with a heaving-resistant stand column, and belongs to the field of ocean engineering.
Background
With the worsening of the environmental pollution problem and the exhaustion of non-renewable energy sources, clean and environment-friendly wind energy is receiving wide attention from people. However, due to the limited ground space, the good wind resources in the sea, and the like, the development of wind power is gradually progressing from the land to the ocean. At present, the installation area of offshore floating wind power is mainly concentrated in a shallow sea area of about 60m, and a floating fan is generally selected in actual engineering aiming at the situation that the geological conditions of certain shallow sea areas do not meet the installation requirements of fixed fans. The existing floating foundation of the offshore wind turbine mainly comprises four types: column, tension leg, barge, and semi-submersible. The Spar type floating foundation has large draught, small vertical wave exciting force and small heaving motion, has better heaving performance than a semi-submersible foundation, but has larger rolling and pitching response; the TLP tension leg type floating foundation has good heaving and swinging motion characteristics, but a tension mooring system is complex and greatly influenced by ocean currents, and resonance is easily generated by frequency coupling of an upper structure and the mooring system; the barge-type floating foundation has violent rolling and pitching response in ocean-going ocean stormy sea areas, and is generally arranged in sea areas with smaller stormy waves; the semi-submersible floating foundation is low in cost, convenient to move and suitable for three or four circular columns with wide water depth, and the foundation in the form also has the problems of deep draft, large wave load, multi-degree-of-freedom motion coupling and the like.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an anti-heaving upright post suitable for a shallow sea wind power platform. Compared with a common cylindrical column type semi-submersible wind power platform, the semi-submersible wind power platform provided with the anti-heaving column has the advantages that when the water inlet volume of the platform is increased, the draught of the platform is reduced, and the semi-submersible wind power platform can be better suitable for shallow sea areas.
The technical scheme adopted by the invention is as follows: a shallow sea wind power semi-submersible platform provided with anti-heaving upright posts comprises integrated damping plates, wherein the integrated damping plates are connected with adjacent upright post bottom plates through bridging plates, and the anti-heaving upright posts are welded on the upright post bottom plates; the anti-heaving upright post is provided with a lower post body, an upper platform body and a top surface from bottom to top, adjacent lower post bodies are connected through a T-shaped material in a reinforcing manner, a post toggle plate is arranged between the lower post body and an upright post bottom plate, and a bridge toggle plate is arranged between the T-shaped material and a bridge plate; the adjacent upper table bodies are connected through a cross brace, and the inclined brace support is connected between the upper table bodies and the T-shaped material; the upper table body is of an inverted structure, and the area of the top surface of the upper table body is larger than that of the bottom surface of the upper table body; the upper platform body is a straight circular platform, a convex circular platform, a concave circular platform or a prismatic platform, and the lower column body is a cylinder or a prism.
The anti-vertical swing upright column is a column convex arc column, a column concave arc column, a column straight column, a column prismatic column, a prismatic concave arc column, a prismatic convex arc column, a prismatic straight column or a prismatic column.
When the upper platform body is a straight circular platform, a concave arc circular platform or a convex arc circular platform, the bottom surface circle of the concave arc circular platform or the convex arc circular platform is an inscribed circle of the top surface of the prism; the lower column body is a cylinder, and when the upper table body is a frustum pyramid, the top surface of the cylinder is a circumscribed circle of the bottom surface of the frustum pyramid.
The heaving-resisting upright column is formed by butting an upper part and a lower part which are positioned on the same axis, wherein the upper part comprises an upper arc round platform, an upper concave arc round platform and an upper prismatic table, the lower part comprises a cylinder and a prism, the lower cylinder or the prism is respectively connected with the downward small ends of the upper arc round platform, the upper concave arc round platform and the upper prismatic table, and the connecting surface at the butting position is the water line surface of the semi-submersible offshore wind power platform under the normal working condition; the anti-heave upright post gradually expands from the middle part to the top part, thereby forming an anti-heave structure.
When the anti-heaving upright columns are applied to the floating wind power platform, the sizes of the anti-heaving upright columns of the floating wind power platform are the same, one ends of two inclined struts are fixedly connected to two sides of the middle position of the T-shaped beam, the other ends of the two inclined struts are fixedly connected with the upper platform on the same side of the corresponding inclined strut, a web plate of the T-shaped beam is flush with the bottom surface of the lower part of the anti-heaving upright column and is connected with a triangular integrated damping plate, and the damping plate is reinforced with the T-shaped section bar and the anti-; the plane where the joints of the upper parts and the lower parts of the multiple anti-heaving upright columns of the wind power platform are located is a working water plane.
The lower cylinder and the upper convex arc round platform form a cylinder convex arc platform column, the lower cylinder and the upper concave arc round platform form a cylinder concave arc platform column, the lower cylinder and the upper straight round platform form a cylinder straight platform column, and the lower cylinder and the upper prismatic table form a cylinder prismatic platform column. The lower prism and the upper concave arc round platform form a prism concave arc platform column, the lower prism and the upper convex arc round platform form a prism convex arc platform column, the lower prism and the upper straight round platform form a prism straight platform column, and the lower prism and the upper prism form a prism platform column.
The floating wind power platform adopting the anti-heaving upright posts has the advantages that the fan is placed on one of the anti-heaving upright posts, and the rest anti-heaving upright posts are pressurized to carry water so as to keep integral balance.
Compared with the prior art, the invention has the beneficial effects that: the anti-heaving upright column is formed by butting an upper part and a lower part which are positioned on the same axis, wherein the lower part is a lower cylinder, the upper part is an upper table body, the downward small end of the upper table body is connected with the lower cylinder, and the connecting surface formed at the butting position is the water plane of the semi-submersible offshore wind power platform under the normal working condition. The top surface of the upper platform body can be used for placing a wind driven generator tower, and the lower column body is immersed in water to provide certain buoyancy for the wind power platform. Compared with a common column type semi-submersible platform, the semi-submersible offshore wind power platform applying the anti-heaving column has better hydrodynamic performance, the column structure expanding upwards from the middle can effectively prevent the deck of the platform from rising, can also reduce the heaving motion response of the platform, and reduces the mooring looseness and even bottoming problem of a mooring system of the platform caused by larger draft change in a shallow water working sea area, thereby improving the safety and durability of the shallow sea wind power platform.
Drawings
FIG. 1 is a perspective view of a shallow sea wind power semi-submersible platform provided with anti-heave columns.
FIG. 2 is a front view of a shallow sea wind power semi-submersible platform provided with anti-heave columns.
FIG. 3 is a top view of a shallow sea wind power semi-submersible platform provided with anti-heave columns.
FIG. 4 is a schematic diagram of an anti-heaving column suitable for a shallow-sea wind power platform.
FIG. 5 is an effect schematic diagram of a shallow sea wind power semi-submersible platform with a heaving resisting stand column.
Fig. 6 is a comparison of draft change for a heave resistant column versus a cylindrical column.
In the figure: 1. the damping plate comprises an anti-heaving upright column, 11, a lower column body, 12, an upper platform body, 13, a top surface, 1a, a convex arc column of a column body, 1b, a concave arc column of a column body, 1c, a straight column of a column body, 1d, a prism column, 1e, a concave arc column of a prism body, 1f, a convex arc column of a prism body, 1g, a straight column of a prism body, 1h, a prism column, 2, an inclined strut, 3, a transverse strut, 4, an integrated damping plate, 41, an upright column bottom plate, 42, a bridging plate, 5, a column toggle plate, 6, a bridge toggle plate, 7, a T section bar, 8 and a fan.
Detailed Description
The objects, technical solutions and advantages of the present invention will be further described with reference to the accompanying drawings.
Fig. 1, 2 and 3 show a shallow sea wind power semi-submersible platform provided with anti-heaving upright posts, which comprises an integrated damping plate 4, wherein a bridge plate 42 is adopted to connect adjacent upright post bottom plates 41, and the anti-heaving upright posts 1 are welded on the upright post bottom plates 41; the anti-heaving upright post 1 is divided into a lower post body 11, an upper platform body 12 and a top surface 13 which are positioned on the same axis, and the joint surface of the butt joint of the lower post body 11 and the upper platform body 12 is the water line surface of the semi-submersible offshore wind power platform under the normal working condition; the adjacent lower columns 11 are connected through T-shaped sections 7 in a reinforcing mode, column toggle plates 5 are arranged between the lower columns 11 and the upright column bottom plate 41, and bridge toggle plates 6 are arranged between the T-shaped sections 7 and the bridge connecting plates 42; the adjacent upper table bodies 12 are connected through the cross braces 3, and the inclined braces 2 are supported and connected between the upper table bodies 12 and the T-shaped bars 7.
The anti-heaving upright post is gradually expanded from the middle part to the top part, so that an upward wave-preventing structure is formed; the sizes of a plurality of anti-heaving upright columns of the floating wind power platform are the same, one ends of two inclined struts 2 are fixedly connected to two sides of the middle position of a T-shaped beam 6, the other ends of the two inclined struts are fixedly connected with an upper platform on the same side of the corresponding inclined strut 2, a web plate of the T-shaped beam 6 is flush with the bottom surface of the lower part of the anti-heaving upright column 1 and is connected with a triangular integrated damping plate 4, and the damping plate 4 is reinforced with a T-shaped section bar 6 and the anti-heaving upright column;
figure 4 shows an outline of an anti-heave column. The column convex arc column 1a is composed of a lower cylinder and an upper convex arc circular truncated cone, the column concave arc column 1b is composed of a lower cylinder and an upper concave arc circular truncated cone, the column straight column 1c is composed of a lower cylinder and an upper prismatic table, the column prismatic column 1d is composed of a lower cylinder and an upper prismatic table, the prismatic concave arc column 1e is composed of a lower prism and an upper concave arc circular truncated cone, the prismatic convex arc column 1f is composed of a lower prism and an upper convex arc circular truncated cone, the prismatic straight column 1g is composed of a lower prism and an upper straight circular truncated cone, and the prismatic column 1h is composed of a lower prism and an upper prismatic table.
FIG. 5 shows a schematic effect diagram of a semi-submersible offshore wind power platform employing anti-heave columns. According to the floating wind power platform adopting the anti-heaving upright columns, the fan 8 is placed on one of the anti-heaving upright columns 1, and the rest of the anti-heaving upright columns are pressurized through the loading water gaps formed in the top surfaces to carry water, so that the integral balance can be kept.
Fig. 6 is a draft change comparison diagram of the anti-heaving upright post and the cylindrical upright post, and compared with the cylindrical upright post, when the platform moves in the stormy waves (particularly downwards heaving movement), the expansion bell mouth structure at the upper part of the anti-heaving upright post can enable the water discharge amount of the platform to be rapidly increased along with the increase of the draft, so that the deck of the platform can be effectively prevented from being billowed, the problem that the mooring system of the mooring system is loosened or even bottom-touching caused by the large draft change in the shallow water working sea area can be reduced, and the safety and durability of the shallow sea wind power platform can be improved.
By adopting the technical scheme, the small end of the upper part of the anti-heaving upright post is in butt joint with the lower cylinder or prism on the same axis, the connecting surface formed at the butt joint part is the water line surface of the semi-submersible wind power platform under the normal working condition, the diameter of the middle part of the upright post is smaller, and an expansion structure with the middle part towards the top end is formed. And all the anti-heaving upright columns forming the semi-submersible wind power platform are completely consistent in shape and size, so that the height of a waterline surface of the semi-submersible platform in normal operation is consistent with the height of a waterline surface (a connection surface formed by butting the lower end with a lower cylinder or prism, with a smaller area of an upper structure body) of each upright column. Because the semi-submersible platform has a relatively small water plane area, the wave load can be effectively reduced. Meanwhile, compared with a common column type semi-submersible platform, the semi-submersible offshore wind power platform applying the anti-heaving columns can reduce the heaving motion response of the platform when the platform performs downward heaving motion, and reduce the problems of mooring looseness and even bottoming of a mooring system of the semi-submersible offshore wind power platform caused by large draft change in a shallow water working sea area, thereby improving the safety of the shallow sea wind power platform. In addition, the fan is placed on one of the anti-heaving upright columns, and the rest anti-heaving upright columns can be kept in overall balance by pressurizing and carrying water, so that the center of gravity of the fan-platform system is kept on the same straight line without eccentricity, and the platform has better stability.
Claims (3)
1. The utility model provides a set up shallow sea wind-powered electricity generation semi-submerged platform of anti column of dangling, it includes integral type damping plate (4), its characterized in that: the integrated damping plate (4) is connected with the adjacent upright post bottom plates (41) by adopting bridge plates (42), and the anti-sagging upright posts (1) are welded on the upright post bottom plates (41); the anti-heaving upright post (1) is divided into a lower post body (11), an upper platform body (12) and a top surface (13) which are positioned on the same axis, the adjacent lower post bodies (11) are connected in a reinforcing way through a T-shaped material (7), a post toggle plate (5) is arranged between the lower post body (11) and an upright post bottom plate (41), and a bridge toggle plate (6) is arranged between the T-shaped material (7) and a bridge connecting plate (42); the adjacent upper table bodies (12) are connected through the cross brace (3), and the inclined brace (2) is supported and connected between the upper table bodies (12) and the T-shaped material (7); the upper table body (12) is of an inverted structure, and the area of the top surface (13) of the upper table body is larger than that of the bottom surface; the upper table body (12) is a straight circular table, a convex circular table, a concave circular table or a prismatic table, and the lower column body (1) is a cylinder or a prism.
2. The shallow sea wind power semi-submersible platform provided with the heaving resisting stand column as claimed in claim 1, wherein: the anti-vertical swing upright column (1) is a column convex arc column (1 a), a column concave arc column (1 b), a column straight column (1 c), a column prism column (1 d), a prism concave arc column (1 e), a prism convex arc column (1 f), a prism straight column (1 g) or a prism column (1 h).
3. The shallow sea wind power semi-submersible platform provided with the heaving resisting stand column as claimed in claim 1, wherein: when the lower column body (11) is a prism, and the upper platform body (12) is a straight circular platform, a concave circular platform or a convex circular platform, the bottom surface circle of the concave circular platform or the convex circular platform is an inscribed circle of the top surface of the prism; the lower column body (11) is a cylinder, and when the upper table body (12) is a prismoid, the top surface of the cylinder is a circumscribed circle of the bottom surface of the prismoid.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113619746A (en) * | 2021-10-13 | 2021-11-09 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Four-upright-column semi-submersible offshore floating platform |
| IT202200004748A1 (en) * | 2022-03-11 | 2023-09-11 | Fincantieri Spa | FLOAT FOR SUPPORTING AN OFFSHORE WIND GENERATOR |
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| IT202200004748A1 (en) * | 2022-03-11 | 2023-09-11 | Fincantieri Spa | FLOAT FOR SUPPORTING AN OFFSHORE WIND GENERATOR |
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