CN115788782A - Floating type fan offshore installation process - Google Patents
Floating type fan offshore installation process Download PDFInfo
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- CN115788782A CN115788782A CN202211595550.3A CN202211595550A CN115788782A CN 115788782 A CN115788782 A CN 115788782A CN 202211595550 A CN202211595550 A CN 202211595550A CN 115788782 A CN115788782 A CN 115788782A
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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
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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
- Y02E10/727—Offshore wind turbines
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Abstract
The invention discloses a floating type fan offshore installation process.A prefabricated seabed weight system is arranged at the bottom of an installation sea area in advance, the upper part of the seabed weight system is connected with a tension cable, and the upper part of the tension cable is connected with a floating ball I to form a vertical tension system; and a plurality of groups of anchor piles are laid in advance, mooring anchor chains are connected to the anchor piles, a plurality of balance weights are arranged at the bottoms of the mooring anchor chains, the upper ends of the mooring anchor chains are connected with the mooring leading cables, and the upper ends of the mooring leading cables are connected with the floating balls II, so that a mooring unit is formed. Has the beneficial effects that: through the floating platform basis greatly increased rigidity and stability itself under the common effort of tension cable and mooring anchor chain, fall to wind, unrestrained, the influence of flowing to minimum, the range of rolling, pitching, drooping and swinging becomes controllable, the fan will become easily to be under construction when toward floating platform basis hoist and mount like this, very big reduction the risk of operation, simultaneously, compare with other marine construction schemes, this scheme construction technology degree of difficulty is low, construction cycle is short, construction cost is low, be one set of practical, easy technical scheme.
Description
Technical Field
The invention relates to the technical field of ocean engineering, in particular to a floating type fan offshore installation process.
Background
Offshore wind power generation is a green energy technology rapidly developed in the world, and the investment and development of offshore wind power are accelerated continuously in China. Particularly, the floating offshore wind turbines are developed rapidly, and large floating wind turbines are emerging continuously. However, the problem of efficient and safe installation and transportation of the floating type fan is always a difficult point of engineering construction. Therefore, long-distance offshore transportation is generally realized by separately transporting the floating platform foundation and the wind turbine, then, the wind turbine is installed at the destination on the sea, and finally, the wind turbine is transported to a wind field for positioning and mooring. Therefore, the offshore installation of the wind turbine is a difficult point of the whole construction project. The existing technical scheme is that a foundation is built in a shallow water area, and a floating platform foundation is arranged at the bottom of the shallow water area. Therefore, high requirements are put forward on the construction of the foundation, the construction period is long, and the environmental requirements are limited.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a floating type fan offshore installation process to overcome the technical problems in the prior related art.
Therefore, the invention adopts the following specific technical scheme:
a floating type fan offshore installation process comprises the following steps:
the prefabricated seabed weight system is arranged at the bottom of an installation sea area in advance, the upper part of the seabed weight system is connected with a tension cable, and the upper part of the tension cable is connected with a floating ball I to form a vertical tension system;
a plurality of groups of anchor piles are laid in advance, a mooring anchor chain is connected to each anchor pile, a plurality of balance weights are arranged at the bottom of each mooring anchor chain, the upper end of each mooring anchor chain is connected with a mooring lead, the upper end of each mooring lead is connected with a floating ball II, a mooring unit is further formed, and a temporary mooring system is formed by a plurality of mooring units;
after the floating platform foundation is towed to an installation sea area by a general three-purpose engineering ship, ballasting the floating platform foundation in place, and then connecting a plurality of mooring units on a temporary mooring system to the floating platform foundation;
connecting the seabed weight with the floating platform foundation, then discharging load to the floating platform foundation, wherein the floating platform foundation does not generate heave under the condition of meeting the sea installation condition of the sea area, and simultaneously the draught depth required after the fan is installed on the floating platform foundation is met;
tightening temporary anchor cable mooring units around the floating platform foundation to complete the positioning of the floating platform foundation;
after the other parts of the floating fan are transported in place, the fan is hoisted to a floating platform foundation through the self-elevating wind power installation platform to be installed;
after the fan is installed, the floating fan is ballasted, and the mooring unit and the seabed weight are removed;
the integral floating fan is slowly dragged to a safe area through the three-purpose engineering ship and then is dragged to a wind field site to be in place.
Preferably, in the process of installing the fan on the floating platform, the self-elevating wind power installation platform can be installed in one of an integral hoisting mode and a split hoisting mode.
Preferably, three upright columns are arranged on the floating platform foundation, and the vertical tension unit and the mooring unit are correspondingly connected with the upright columns.
The invention has the beneficial effects that:
the seabed weight is of a reinforced concrete structure, and aims to reduce the construction cost;
the first floating ball has the function of facilitating salvage when the tension cable is connected with the floating platform foundation;
the function of the mooring rope is to assist in tensioning the anchor chain when the floating platform foundation is positioned;
the second floating ball has the function of facilitating salvage and adjusting the tension and the angle of the anchor chain when the anchor chain is connected with the floating platform foundation;
the counterweight is used for adjusting the weight and the angle of the anchor chain, and the anchor pile is used for connecting the anchor chain with the seabed so as to provide enough ground gripping force for the anchor chain;
the three-purpose engineering ship has the following functions: firstly, haul the floating platform basis, secondly, get into the supplementary interim location floating platform basis behind the installation sea area as the floating platform basis.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of the overall structure of a floating wind turbine offshore installation process according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram illustrating a positional relationship between a vertical tension system and a temporary mooring system in a floating wind turbine offshore installation process according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a single set of tension units of a vertical tension system for use in a floating wind turbine offshore installation process, according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a single mooring unit of a temporary mooring system in a floating wind turbine offshore installation process according to an embodiment of the invention;
FIG. 5 is a schematic illustration of a wind turbine foundation hauling process for a floating wind turbine offshore installation process according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an auxiliary mooring positioning structure of a floating platform foundation for a floating wind turbine offshore installation process according to an embodiment of the invention;
FIG. 7 is a schematic diagram of a process for installing a floating wind turbine by hoisting the floating wind turbine according to an embodiment of the present invention;
fig. 8 is a schematic flow diagram illustrating steps of a floating wind turbine offshore installation process according to an embodiment of the present invention.
In the figure:
1. a fan; 2. a floating platform foundation; 3. a vertical tension system; 31. a vertical tension unit; 311. a seabed mooring weight; 3111. a hanging device; 312. a tension cable; 313. a first floating ball; 4. a temporary mooring system; 41. a mooring unit; 411. mooring anchor chains; 412. leading a cable; 413. a second floating ball; 414. balancing weight; 415. anchoring piles; 5. a three-purpose engineering ship; 6. self-elevating wind power installation platform.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to an embodiment of the invention, a floating wind turbine offshore installation process is provided.
The first embodiment;
as shown in fig. 1 to 8, the present embodiment includes: a wind turbine 1, a floating platform foundation 2, a vertical tension system 3 and a temporary mooring system 4.
The floating platform foundation 2 of the embodiment is a three-column semi-submersible floating platform foundation, and the floating platform foundation 2 can complete ballast submerging, discharge floating and floating operations.
The vertical tension system 3 of the present embodiment includes 3 sets of vertical tension units 31, and each set of vertical tension units 31 is connected to the columns of the floating platform foundation 2.
The temporary mooring system 4 of the present embodiment comprises 3 sets of mooring units 41, and each set of mooring units 41 is connected to a corresponding fan column.
As shown in fig. 2, the three-column structure of the vertical tension system 3 according to the fan 1 is provided with 3 groups of vertical units 31; the temporary mooring system 4 is also equipped with 3 sets of mooring units 41 corresponding to the three columns of the wind turbine 1.
As shown in fig. 3, each set of vertical tension units 31 includes 1 subsea weight 311 and several tension cables 312 and a float ball 313 on top of each tension cable 312. The lower portion of tension cable 312 is connected to subsea weight 311 and the top portion is connected to float one 313. The subsea weight 311 of this embodiment is a reinforced concrete structure, and the purpose of this embodiment is to reduce the construction cost. The first floating ball 313 is used for facilitating fishing when the tension cable 312 is connected with the floating platform foundation 2.
As shown in fig. 4, each group of mooring units 41 of the temporary mooring system 4 comprises a mooring anchor chain 411, two floating balls 413, a mooring line 412, a counterweight 414 and an anchor pile 415; the upper part of an anchor chain 411 is connected with a guide cable 412, the upper part of the guide cable 412 is connected with a second floating ball 413, the lower part of the anchor chain 411 is connected with a plurality of groups of balance weights 414, the bottommost end of the balance weights is connected with an anchor pile 415, and the guide cable 412 is used for assisting in tensioning the anchor chain 411 when the floating platform foundation 2 is positioned; the floating ball II 413 is used for facilitating fishing and adjusting the tension and the angle of the anchor chain 411 when the anchor chain 411 is connected with the floating platform foundation 2; the counterweight 414 functions to adjust the weight and angle of the anchor chain 411; the purpose of the anchor piles 415 is to attach the anchor chain 411 to the sea floor to provide adequate grip for the anchor chain 411.
As shown in fig. 5, when the floating platform foundation 2 is hauled in place, the haulage is completed by 3 three-purpose engineering ships 5; the three-purpose engineering ship 5 has the functions of: firstly, the floating platform foundation 2 is hauled, secondly, the floating platform foundation 2 is assisted to be temporarily positioned after the floating platform foundation 2 enters an installation sea area, and thirdly, the seabed weight system 311 can be connected with the floating platform foundation 2.
Fig. 6 is a schematic diagram of an auxiliary mooring positioning structure of the floating platform foundation 2. The floating platform foundation 2 is matched with the buoyancy adjustment of the floating platform foundation 2 through the vertical tension system 3 and the temporary mooring system 4, so that the positioning of the floating platform foundation 2 is realized, and the floating platform foundation 2 meets the conditions of fan hoisting and installation.
Fig. 7 is a schematic diagram of an offshore installation process of the wind turbine 1. The mounting equipment used in the embodiment is a self-elevating wind power mounting platform 6, and is characterized in that the bottom of the pile leg is fixed, so that the hoisting is stable. And secondly, the hoisting height is high, the hoisting weight is large, and the hoisting installation of the high-power fan can be realized.
Example two;
as shown in fig. 1-7, according to an embodiment of the present invention, there is also provided a floating wind turbine offshore installation process, including the steps of;
step S1: referring to fig. 2 and 3, according to the weight load of the wind turbine 1, the three-column type and the overall size of the floating platform foundation 2, and the calculation of sea condition parameters of the installation sea area, the vertical tension unit 31 is arranged on the sea bottom in advance, and the installation position of the vertical tension unit is below the columns of the floating platform foundation 2; at this time, the bottom of the sea is positioned by the bottom system weight 311, and the floating ball 313 pulls the tension cable 312 to be above the sea surface.
Step S2: referring to fig. 2 and 4, 3 groups of mooring units 41 of the temporary mooring system 4 are preset around each column of the floating platform foundation 2 according to the weight load of the wind turbine 1, the three-column type and the overall size of the floating platform foundation 2, and by combining with the calculation of sea state parameters of the installation sea area, at this time, the upper end of the anchor chain 411 is connected with a mooring rope 412, the upper end of the mooring rope 412 is connected with a floating ball 413, the floating ball 413 floats above the sea surface, the lower part of the anchor chain 411 is connected with a plurality of groups of balancing weights 411, the tail end of the anchor chain 411 is connected with an anchor pile 415, and the anchor pile 415 sinks into the sea bottom.
And step S3: referring to fig. 5, the floating pontoon base 2 enters the installation sea area at three-way engineering vessels 5, and at this time, the vertical tension system 3 and the temporary mooring system 4 are installed.
And step S4: referring to fig. 6, the floating platform foundation 2 is ballasted with draft and is accurately positioned by using 3 three-way engineering ships 5, and then, the first fishing floater 313 connects and tightens the tension cable 312 of the 3 groups of vertical tension units 31 with the corresponding floating platform foundation 2 upright post.
Step S5: referring to fig. 6, salvaging the second floating ball 413, tightening the guide cable 412, connecting and tightening the anchor chains 411 of the 3 sets of mooring units 41 with the corresponding upright posts of the floating platform foundation 2, adjusting the position of the second floating ball 413 and the tension of each anchor chain 411, reducing the horizontal internal swing amplitude of the floating platform foundation 2, and meeting the condition of installing the fan 1 on the floating platform foundation 2
Step S6: referring to fig. 6, the floating platform foundation 2 is loaded to increase buoyancy and tension of the tension cable 312, so that the influence of surge on the floating platform foundation 2 is eliminated, and the draught depth of the fan 1 mounted on the floating platform foundation 2 can be met.
Step S7: see fig. 7, after the self-elevating wind power installation platform 6 is in place, the pile leg depths are positioned to the seabed, the fan 1 is transported to the installation sea area, the self-elevating wind power installation platform 6 hoists the fan 1 to the positioned floating platform foundation 2 for installation, the diagram is a fan integral hoisting state diagram, and the fan can be hoisted selectively and sectionally according to the weight and the size conditions of the fan 1 to complete installation.
Step S8: after the fan 1 is installed, the floating platform foundation 2 is ballasted, the tension cable 311 and the anchor chain 411 are released, and the installed fan 1 and the floating platform foundation 2 can be pulled away from the installation sea area to a wind field to be in place by the three-purpose engineering ship 5.
The third embodiment;
as shown in fig. 1-5, in the process of installing the wind turbine 1 on the floating platform foundation 2, the self-elevating wind power installation platform 6 may be installed in one of an integral hoisting manner and a split hoisting manner; three upright columns are arranged on the floating platform foundation 2, and the vertical tension unit 31 and the mooring unit 41 are both correspondingly connected with the upright columns.
In summary, with the above technical solution of the present invention, the seabed weight 311 is made of reinforced concrete, and the construction cost is reduced, the seabed weight 311 is made of reinforced concrete, and the reinforced concrete structure weight can be prefabricated in advance, transported to the installation sea area, and then sunk to the designated position of the installation sea area, and the weight itself has the hanging device 3111, can bear the self gravity load, is convenient to hoist and install, and can be used for hanging the tension cable 312. Of course, any other weight meeting the weight and fastening requirements can be used as the weight tying block;
the first floating ball 313 has the function of facilitating fishing when the tension cable 312 is connected with the floating platform foundation 2;
the function of the mooring rope 412 is to assist in tensioning the anchor chain 411 when the floating platform foundation 2 is positioned;
the floating ball II 413 is used for facilitating fishing and adjusting the tension and the angle of the anchor chain 411 when the anchor chain 411 is connected with the floating platform foundation 2;
the three-purpose engineering ship 5 has the following functions: firstly, haul flotation platform basis 2, secondly when flotation platform basis 2 gets into supplementary interim location flotation platform basis 2 behind the installation sea area.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (3)
1. The floating type fan offshore installation process is characterized by comprising the following steps of:
s1: the prefabricated seabed weight system (311) is arranged at an installation sea area in advance, the upper part of the prefabricated seabed weight system is connected with a tension cable (312), and the upper part of the tension cable (312) is connected with a first floating ball (313) to form a vertical tension system (3);
s2: a plurality of groups of anchor piles (415) are laid in advance, a mooring anchor chain (411) is connected to each anchor pile (415), a plurality of balance weights (414) are arranged at the bottom of each mooring anchor chain (411), the upper end of each mooring anchor chain (411) is connected with a mooring rope (412), the upper end of each mooring rope (412) is connected with a floating ball II (413), so that a mooring unit (41) is formed, and a plurality of mooring units (41) form a temporary mooring system (4);
s3: after the floating platform foundation (2) is hauled to an installation sea area by a general three-purpose engineering ship, the floating platform foundation (2) is ballasted after being in place, and then a plurality of mooring units (41) on the temporary mooring system (4) are connected to the floating platform foundation (2);
s4: connecting a seabed weight (311) with a floating platform foundation (2), then discharging load on the floating platform foundation (2), wherein the floating platform foundation (2) does not generate heave under the condition of meeting the sea condition of an installation sea area, and simultaneously the draught depth required after a fan (1) is installed on the floating platform foundation (2) is met;
s5: tightening temporary anchor cable mooring units (41) around the floating platform foundation (2) to complete the positioning of the floating platform foundation (2);
s6: after the other parts of the floating type fan are transported in place, the fan (1) is hoisted to the floating platform foundation (2) through the self-elevating type wind power installation platform (6) for installation;
s7: after the fan (1) is installed, the floating fan is ballasted, and the mooring unit (41) and the seabed system weight (311) are removed;
s8: the integral floating fan is slowly dragged to a safe area through the three-purpose engineering ship (5), and then the integral floating fan is dragged to a wind field site to be in place.
2. The floating wind turbine offshore installation process according to claim 1, wherein in the process of installing the wind turbine (1) on the floating platform foundation (2), the self-elevating wind power installation platform (6) can be installed in one of an integral hoisting mode and a split hoisting mode.
3. Offshore installation process of a floating wind turbine according to claim 2, characterized in that three columns are provided on the floating platform foundation (2), and the vertical tension unit (31) and the mooring unit (41) are both connected to the columns correspondingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211595550.3A CN115788782A (en) | 2022-12-13 | 2022-12-13 | Floating type fan offshore installation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211595550.3A CN115788782A (en) | 2022-12-13 | 2022-12-13 | Floating type fan offshore installation process |
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| CN115788782A true CN115788782A (en) | 2023-03-14 |
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| CN202211595550.3A Pending CN115788782A (en) | 2022-12-13 | 2022-12-13 | Floating type fan offshore installation process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116620514A (en) * | 2023-03-30 | 2023-08-22 | 大连理工大学 | Method for batch assembly and transportation of floating type offshore wind power equipment supporting structure |
| CN117028157A (en) * | 2023-10-09 | 2023-11-10 | 中国电力工程顾问集团有限公司 | Method for installing mud floating type offshore wind turbine system |
| CN117028159A (en) * | 2023-10-09 | 2023-11-10 | 中国电力工程顾问集团有限公司 | Method for transporting mud floating type offshore wind turbine system and method for adjusting working height |
-
2022
- 2022-12-13 CN CN202211595550.3A patent/CN115788782A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116620514A (en) * | 2023-03-30 | 2023-08-22 | 大连理工大学 | Method for batch assembly and transportation of floating type offshore wind power equipment supporting structure |
| CN116620514B (en) * | 2023-03-30 | 2023-10-24 | 大连理工大学 | Method for batch assembly and transportation of floating type offshore wind power equipment supporting structure |
| CN117028157A (en) * | 2023-10-09 | 2023-11-10 | 中国电力工程顾问集团有限公司 | Method for installing mud floating type offshore wind turbine system |
| CN117028159A (en) * | 2023-10-09 | 2023-11-10 | 中国电力工程顾问集团有限公司 | Method for transporting mud floating type offshore wind turbine system and method for adjusting working height |
| CN117028159B (en) * | 2023-10-09 | 2023-12-08 | 中国电力工程顾问集团有限公司 | Method for transporting mud floating type offshore wind turbine system and method for adjusting working height |
| CN117028157B (en) * | 2023-10-09 | 2023-12-15 | 中国电力工程顾问集团有限公司 | Method for installing mud floating type offshore wind turbine system |
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