CN109720514B - Tendon for tension leg floating type wind power platform - Google Patents
Tendon for tension leg floating type wind power platform Download PDFInfo
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- CN109720514B CN109720514B CN201910137589.2A CN201910137589A CN109720514B CN 109720514 B CN109720514 B CN 109720514B CN 201910137589 A CN201910137589 A CN 201910137589A CN 109720514 B CN109720514 B CN 109720514B
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- 210000002435 tendon Anatomy 0.000 title claims abstract description 42
- 238000007667 floating Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 238000010276 construction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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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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- Wind Motors (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses an tendon for a tension leg floating type platform, which comprises a main anchor chain, a plurality of auxiliary anchor chains and an anchor chain adjusting mechanism. The lower end of the main anchor chain is connected to the submarine foundation pile, and the upper end of the main anchor chain is fixed at the center of the bottom surface of a transfer platform; the lower ends of a plurality of auxiliary anchor chains are uniformly fixed on the top surface of the switching platform, and the upper ends of a plurality of auxiliary anchor chains are arranged in through holes formed in the outer end parts of the same balance leg in a penetrating way; the anchor chain regulating mechanism comprises an anchor chain rough regulating mechanism and an anchor chain fine regulating mechanism; the minimum stroke of each adjustment of the anchor chain rough adjusting mechanism is 2 sub-anchor chain links; each anchor chain fine tuning mechanism is arranged at the outer end part of the balance leg corresponding to one auxiliary anchor chain, clamps one auxiliary anchor chain penetrating through the perforation of the balance leg and adjusts the length of the auxiliary anchor chain, and each anchor chain fine tuning mechanism adjusts the length of the auxiliary anchor chain links by 0-2 times. The invention solves the problem that tendons of the tension leg floating type platform are not easy to replace.
Description
Technical Field
The invention relates to tendons for a tension leg floating type wind power platform.
Background
The offshore wind turbine generator sets which are all offshore fixed foundations are adopted by the offshore wind farm which is built at home at present. With the development of offshore wind farms, the offshore distance and water depth of wind farms are increasing, and various traditional fixed foundations have been difficult to meet the requirements of deep sea wind energy development. The construction of wind power plants will gradually progress to deeper waters, and if a fixed foundation is adopted in the offshore wind power plants in deep sea areas, the dead weight and the engineering cost will be greatly increased along with the water depth, so that the wind power plants are not suitable for the deep sea environment. The floating type fan can adapt to a larger water depth environment by adopting a floating type foundation and an anchoring system, has relatively low manufacturing and installation cost compared with a fixed type offshore fan under the condition of a deep open sea environment, and has more market prospect in the deep open sea area.
The foundation types of floating offshore wind power can be classified into tension leg Type (TLP), semi-submersible type (Semi-Sub) and Spar type (Spar). These three forms are built by demonstration projects or by construction abroad. Through comprehensive demonstration of the existing domestic fan manufacturing technology and natural conditions, the tension leg type (namely TLP) is considered to be the floating wind power form most suitable for the floating wind power development in China at present.
Most of the TLP platforms in foreign countries use steel pipes as tendon structures at present, but when the steel pipes are used as the tendons of the TLP platforms, spherical hinges capable of swinging in any direction, namely tendon connectors, are respectively connected between the tendons and the seabed foundation and the platform, and the tendon connectors are imported products and have complex structures and are also limited and restricted by foreign countries.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the tendon for the tension leg floating type wind power platform, which solves the problem that the tendon of the tension leg floating type wind power platform is not easy to replace, can adjust the tension and has better economy.
The purpose of the invention is realized in the following way: the tendon for the tension leg floating type platform comprises a plurality of balance legs which are horizontally and uniformly led out from the upper end of the floating type platform; a tendon is connected between the outer end part of each balance leg and the seabed foundation pile; wherein,
the tendon comprises a main anchor chain, a plurality of auxiliary anchor chains and an anchor chain adjusting mechanism;
the lower end of the main anchor chain is connected to the submarine foundation pile, and the upper end of the main anchor chain is fixed in the center of the bottom surface of a transfer platform;
the lower ends of a plurality of auxiliary anchor chains are uniformly fixed on the top surface of the switching platform, and the upper ends of a plurality of auxiliary anchor chains are arranged in through holes formed in the outer end parts of the same balance leg in a penetrating way;
the anchor chain adjusting mechanism comprises an anchor chain rough adjusting mechanism and anchor chain fine adjusting mechanisms with the same number as that of the auxiliary anchor chains; the anchor chain rough adjusting mechanism is operated above the floating platform, and the minimum stroke of each adjustment is the length of 2 auxiliary anchor chain links; each auxiliary anchor chain fine tuning mechanism is arranged at the outer end part of the balance leg corresponding to one auxiliary anchor chain, clamps one perforated auxiliary anchor chain penetrating through the balance leg and adjusts the length of the auxiliary anchor chain, and each auxiliary anchor chain fine tuning mechanism adjusts the length of the auxiliary anchor chain links by 0-2 times.
The tendon for the tension leg floating wind power platform is characterized in that the anchor chain fine adjustment mechanism comprises a hollow screw rod, a nut sleeve and a sleeve seat barrel; the hollow screw rod is fixed on the top surface of the outer end part of the balance leg; the nut sleeve is in threaded connection with the hollow screw rod; the sleeve seat cylinder is fixed on the top surface of the nut sleeve, the top surface of the sleeve seat cylinder is connected with a top cover through a hinge shaft, a channel which is perpendicular to the hinge shaft and passes through the top cover and reaches the outer peripheral surface of the top cover is formed in the outer end surface of the top cover, the width of the channel is matched with the chain diameter of the auxiliary anchor chain, and the length of the channel is larger than the outer width of the auxiliary anchor chain ring, so that the auxiliary anchor chain ring is clamped in the channel.
The tendon for the tension leg floating wind power platform is characterized in that the main anchor chain is formed by connecting a plurality of common main anchor chain rings with gears; the auxiliary anchor chain is formed by connecting a plurality of common auxiliary anchor chain rings with gears.
According to the tendon for the tension leg floating wind power platform, the groove with the width matched with the outer width of the auxiliary anchor chain ring is formed in the center of the top surface of the top cover of the sleeve seat cylinder.
The tendon for the tension leg floating platform has the following characteristics:
1. the problem that tendons of the tension leg floating type platform are not easy to replace is solved;
2. the device is provided with an anchor chain adjusting mechanism which can adjust the tension of tendons according to the detection data;
3. the structure is relatively simple, and the reliability is high;
4. the processing difficulty is low, and the construction and installation are easy;
5. the price is lower, and the economical efficiency is better.
Drawings
FIG. 1 is a perspective view of tendons for a tension leg floating platform of the present invention;
FIG. 2 is a front view of tendons for a tension leg floating platform of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a perspective view of the anchor chain micro-adjustment mechanism in tendons of the present invention;
fig. 5a, 5b and 5c are state diagrams of the tendon of the present invention when it is adjusted.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, tendons for a tension leg floating platform of the present invention, four balance legs 11 are horizontally and uniformly led out from the upper end of a floating platform 10, and one tendon is connected between the outer end of each balance leg 11 and a seabed foundation pile 20.
The tendon of the present invention includes a main anchor chain 30, a plurality of auxiliary anchor chains 50 and an anchor chain adjusting mechanism; wherein:
the main anchor chain 30 is formed by connecting a plurality of common main anchor chain links with gears; the auxiliary anchor chain 50 is formed by connecting a plurality of common auxiliary anchor chain rings with gears;
the lower end of the main anchor chain 30 is connected to the submarine foundation pile 20, and the upper end of the main anchor chain 30 is fixed in the center of the bottom surface of a transfer platform 40;
the lower ends of a plurality of auxiliary anchor chains 50 are uniformly fixed on the top surface of the switching platform 40, and the upper ends of a plurality of auxiliary anchor chains 50 are penetrated in the through holes formed in the outer end parts of the same balance leg;
the anchor chain adjusting mechanism comprises a rough adjusting mechanism and anchor chain fine adjusting mechanisms 60 with the same number as the auxiliary anchor chains 50;
the coarse anchor chain adjustment mechanism operates above the floating platform 10 and the minimum travel per adjustment is 2 secondary anchor links long;
each chain micro-adjustment mechanism 60 is mounted at the outer end of the balance leg 100 corresponding to one auxiliary chain 50, each chain micro-adjustment mechanism 60 clamps one perforated auxiliary chain 50 passing through the balance leg 11 and adjusts the length of the auxiliary chain 50, and each chain micro-adjustment mechanism 60 adjusts the stroke of 0-2 auxiliary anchor links each time.
Each anchor chain fine adjustment mechanism 60 comprises a hollow screw 61, a nut sleeve 62 and a sleeve seat barrel 63; wherein the hollow screw 61 is fixed on the top surface of the outer end portion of the balance leg 11; the nut sleeve 62 is in threaded connection with the hollow screw 61; the sleeve seat cylinder 63 is fixed on the top surface of the nut sleeve 62, and the top surface of the sleeve seat cylinder 63 is connected with a top cover 64 through a hinge shaft, so that the top cover 64 can be turned over; a channel 64a which is perpendicular to the hinge shaft and passes through the center of the top cover 64 and reaches the outer peripheral surface of the top cover is formed in the top cover 64, the width of the channel 64a is matched with the chain diameter of the auxiliary anchor chain 50, the length of the channel 64a is larger than the outer width of the auxiliary anchor chain ring, and the auxiliary anchor chain ring is clamped in the channel 64 a; the top center of the cap 64 is also provided with a recess 64b, the width of the recess 64b being adapted to the outer width of the secondary anchor link.
The working principle of the anchor chain adjusting mechanism for tendons of the tension leg floating type platform is as follows:
the length of the auxiliary anchor chain 50 is adjusted by the hollow screw 61 and the nut sleeve 62, the length of the hollow screw 61 is the adjusting stroke of the anchor chain fine adjusting mechanism 60, and in this embodiment, the length of the hollow screw 61 is the length of 1 auxiliary anchor chain ring. In the original state, the nut sleeve 62 is positioned at the lower part of the hollow screw 61 (see fig. 5 a), and in the fine adjustment, the nut sleeve 62 sleeved on the hollow screw 61 is rotated, so that the sleeve seat cylinder 63 and the top cover 64 on the nut sleeve 62 are driven to integrally rise upwards; because the top cover 64 is provided with the channel 64a and the top surface of the top cover 64 is provided with the groove 64b, the secondary anchor links of the secondary anchor chain 50 parallel to the channel 64a penetrate the channel 64a of the top cover 64, and the secondary anchor links perpendicular to the channel 64a are blocked on the bottom surface of the top cover 64. When the top cover 64 is in a closed state due to its own weight at the beginning of fine tuning, when the sleeve barrel 63 and the top cover 64 are integrally lifted up, the auxiliary anchor chain 50 is pulled up by the top cover 64 by 1 auxiliary anchor chain ring length (see fig. 5 b), then the auxiliary anchor chain 50 is lifted up above the floating platform 10, so that the top cover 64 is lifted up by the auxiliary anchor chain ring perpendicular to the channel 64a, and when the top cover 64 is opened to a limit state, the auxiliary anchor chain 50 is lifted up by 2 auxiliary anchor chain rings length (see fig. 5 c), and then the auxiliary anchor chain 50 is lifted up by 3 auxiliary anchor chain ring lengths, thereby achieving the purpose of adjusting tendon tension.
The tendon for tension leg floating platform of the present invention is composed of a main anchor chain 30 and a sub anchor chain 50 of different specifications. When the tendon of the present invention is used, the submarine foundation piles 20 are driven into the deep open sea to a certain depth, the lower ends of the main anchor chains 30 are connected with the submarine foundation piles 20, the upper ends of the main anchor chains 30 are connected to the bottom surface of the transfer platform 40, the lower ends of the plurality of auxiliary anchor chains 50 are connected to the top surface of the transfer platform 40, and the other ends of the plurality of auxiliary anchor chains 50 are connected to the balance legs 11 of the corresponding floating platform 10. The transfer platform 40 is placed in a shallow water area, and the installation and the later replacement of the auxiliary anchor chain 50 are performed on the transfer platform 40.
The main chain 30 meets the service life requirements by increasing the chain diameter to reserve sufficient corrosion margin. Secondary anchor chain 50 is provided with a surplus number. In the limit, if one secondary anchor chain 50 breaks, the remaining secondary anchor chain stresses should also meet the requirements. When the auxiliary anchor chain 50 needs to be replaced after a period of use, even if one auxiliary anchor chain 50 is removed, the stress of the floating platform 10 meets the requirement, so that the auxiliary anchor chains can be replaced one by one, and the aim of replacing the anchor chains is fulfilled.
With the increase of service life, the chain diameter of the anchor chain becomes thinner under the action of seawater corrosion, so that the length of the anchor chain is increased, and the tension of tendons is reduced. According to the invention, the anchor chain rough adjusting mechanism and the anchor chain fine adjusting mechanism are arranged on each tendon, so that the tension of each tendon can be adjusted according to the tension monitoring of the tendon.
The tendon for the tension leg floating platform has the following characteristics:
1. the problem that tendons of the tension leg floating type platform are not easy to replace is solved;
2. the device is provided with an anchor chain adjusting mechanism which can adjust the tension of tendons according to the detection data;
3. the structure is relatively simple, and the reliability is high;
4. the processing difficulty is low, and the construction and installation are easy;
5. the price is lower, and the economical efficiency is better.
The above embodiments are provided for illustrating the present invention and not for limiting the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention, and thus all equivalent technical solutions should be defined by the claims.
Claims (1)
1. The tendon for the tension leg floating wind power platform comprises a plurality of balance legs which are horizontally and uniformly led out from the upper end of the floating wind power platform; a tendon is connected between the outer end part of each balance leg and the seabed foundation pile; it is characterized in that the method comprises the steps of,
the tendon comprises a main anchor chain, a plurality of auxiliary anchor chains and an anchor chain adjusting mechanism;
the main anchor chain is formed by connecting a plurality of common main anchor chain links with gears; the auxiliary anchor chain is formed by connecting a plurality of common auxiliary anchor chain rings with gears;
the lower end of the main anchor chain is connected to the submarine foundation pile, and the upper end of the main anchor chain is fixed in the center of the bottom surface of a transfer platform;
the lower ends of a plurality of auxiliary anchor chains are uniformly fixed on the top surface of the switching platform, and the upper ends of a plurality of auxiliary anchor chains are arranged in through holes formed in the outer end parts of the same balance leg in a penetrating way;
the anchor chain adjusting mechanism comprises an anchor chain rough adjusting mechanism and anchor chain fine adjusting mechanisms with the same number as that of the auxiliary anchor chains; the anchor chain rough adjusting mechanism is operated above the floating platform, and the minimum stroke of each adjustment is the length of 2 auxiliary anchor chain links; each anchor chain fine tuning mechanism is arranged at the outer end part of the balance leg corresponding to one auxiliary anchor chain, clamps one perforated auxiliary anchor chain penetrating through the balance leg and adjusts the length of the auxiliary anchor chain, and each anchor chain fine tuning mechanism adjusts the length of 0-2 auxiliary anchor chain links each time;
the anchor chain fine adjustment mechanism comprises a hollow screw, a nut sleeve and a sleeve seat barrel; the hollow screw rod is fixed on the top surface of the outer end part of the balance leg; the nut sleeve is in threaded connection with the hollow screw rod; the sleeve seat cylinder is fixed on the top surface of the nut sleeve, the top surface of the sleeve seat cylinder is connected with a top cover through a hinge shaft, a channel which is perpendicular to the hinge shaft and passes through the center of the top cover and reaches the outer peripheral surface of the top cover is formed in the outer end surface of the top cover, the width of the channel is matched with the chain diameter of the auxiliary anchor chain, and the length of the channel is larger than the outer width of the auxiliary anchor chain ring, so that the auxiliary anchor chain ring is clamped in the channel; the top surface center of top cap sets up a width and the outside wide adaptation's of auxiliary anchor chain ring recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137589.2A CN109720514B (en) | 2019-02-25 | 2019-02-25 | Tendon for tension leg floating type wind power platform |
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| CN201910137589.2A CN109720514B (en) | 2019-02-25 | 2019-02-25 | Tendon for tension leg floating type wind power platform |
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| Publication Number | Publication Date |
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| CN109720514A CN109720514A (en) | 2019-05-07 |
| CN109720514B true CN109720514B (en) | 2024-03-12 |
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| CN201910137589.2A Active CN109720514B (en) | 2019-02-25 | 2019-02-25 | Tendon for tension leg floating type wind power platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112937786B (en) * | 2021-04-30 | 2023-06-30 | 任冬冬 | Anti-collision offshore operation platform capable of reducing wave breaking influence and construction method |
| CN113911288B (en) * | 2021-11-12 | 2023-03-24 | 中交第三航务工程局有限公司 | Method for monitoring operation period of floating type fan TLP platform |
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| US4320993A (en) * | 1980-07-28 | 1982-03-23 | Conoco Inc. | Tension leg platform mooring tether connector |
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| CN103419904A (en) * | 2013-08-19 | 2013-12-04 | 上海利策海洋工程技术有限公司 | Floater type tension tendon and installation way |
| CN105129038A (en) * | 2015-08-14 | 2015-12-09 | 大连理工大学 | Light wave power generation platform device based on combination of floating towers and submerged floating body and application method thereof |
| CN105966557A (en) * | 2016-03-24 | 2016-09-28 | 湖北海洋工程装备研究院有限公司 | Overwater structural object hybrid positioning system |
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| CN107813909A (en) * | 2017-10-13 | 2018-03-20 | 大连理工大学 | A kind of tension tendon alignment system for Hollow Microspheres Reinforced Composite Materials floating drum of connecting |
| CN209600752U (en) * | 2019-02-25 | 2019-11-08 | 中交第三航务工程局有限公司 | A kind of tendon for tension leg floatation type wind power platform |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001041549A2 (en) * | 1999-12-07 | 2001-06-14 | Fmc Corporation | Collapsible buoyancy device for risers on offshore structures |
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2019
- 2019-02-25 CN CN201910137589.2A patent/CN109720514B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3905319A (en) * | 1974-02-28 | 1975-09-16 | Atlantic Richfield Co | Tension-leg platform |
| US4320993A (en) * | 1980-07-28 | 1982-03-23 | Conoco Inc. | Tension leg platform mooring tether connector |
| US4784529A (en) * | 1987-10-06 | 1988-11-15 | Conoco Inc. | Mooring apparatus and method of installation for deep water tension leg platform |
| CN102939238A (en) * | 2010-02-25 | 2013-02-20 | 默代克国际股份有限公司 | Tension leg platform with improved hydrodynamic performance |
| CN103419904A (en) * | 2013-08-19 | 2013-12-04 | 上海利策海洋工程技术有限公司 | Floater type tension tendon and installation way |
| CN105129038A (en) * | 2015-08-14 | 2015-12-09 | 大连理工大学 | Light wave power generation platform device based on combination of floating towers and submerged floating body and application method thereof |
| CN105966557A (en) * | 2016-03-24 | 2016-09-28 | 湖北海洋工程装备研究院有限公司 | Overwater structural object hybrid positioning system |
| CN106741646A (en) * | 2017-02-06 | 2017-05-31 | 阳光电源股份有限公司 | A kind of raft |
| CN107813909A (en) * | 2017-10-13 | 2018-03-20 | 大连理工大学 | A kind of tension tendon alignment system for Hollow Microspheres Reinforced Composite Materials floating drum of connecting |
| CN209600752U (en) * | 2019-02-25 | 2019-11-08 | 中交第三航务工程局有限公司 | A kind of tendon for tension leg floatation type wind power platform |
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