CN109720514A - A kind of tendon for tension leg floatation type wind power platform - Google Patents
A kind of tendon for tension leg floatation type wind power platform Download PDFInfo
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- CN109720514A CN109720514A CN201910137589.2A CN201910137589A CN109720514A CN 109720514 A CN109720514 A CN 109720514A CN 201910137589 A CN201910137589 A CN 201910137589A CN 109720514 A CN109720514 A CN 109720514A
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- 210000002435 tendon Anatomy 0.000 title claims abstract description 46
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 238000007667 floating Methods 0.000 claims description 36
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000010276 construction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 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
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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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of tendon for tension leg floatation type platform, tendon includes a Bower Anchor chain, more secondary anchor chains and anchor chain regulating mechanism.The lower end of Bower Anchor chain is connected in the seafloor foundation stake, and the upper end of the Bower Anchor chain is fixed on the bottom surface center of a transfer platform；The lower end of more secondary anchor chains is fixed in uniform way on the top surface of the transfer platform, and the upper end of several secondary anchor chains is threaded through in the perforation opened up on the outer end of same balance leg；Anchor chain regulating mechanism includes anchor chain coarse adjustment mechanism and anchor chain micro-adjusting mechanism；The minimum stroke that anchor chain coarse adjustment mechanism is adjusted every time is the length of 2 secondary cable links；Each anchor chain micro-adjusting mechanism corresponds to a secondary anchor chain installation in the outer end of balance leg and clamps the secondary anchor chain for the perforation that one passes through balance leg and adjust the length of the root pair anchor chain, and each anchor chain micro-adjusting mechanism adjusts stroke every time as the length of 0~2 secondary cable link.The present invention solves the problems, such as that the tendon of tension leg floatation type platform is not easy to replace.
Description
Technical Field
The invention relates to a tendon for a tension leg floating type wind power platform.
Background
At present, offshore wind power plants built in China adopt offshore wind turbine units which are all on an offshore fixed foundation. With the development of offshore wind farms, the offshore distance and the water depth of the wind farms are increasing, and various traditional fixed foundations are difficult to meet the requirements of deep-sea wind energy development. The construction of the wind power plant gradually develops towards deeper water areas, and if a fixed foundation is adopted in the offshore wind power plant in the deep and far sea areas, the self weight and the engineering cost of the wind power plant can be greatly increased along with the water depth, so that the wind power plant is not suitable for the deep and far sea environment. The floating type fan adopts the floating type foundation and the anchoring system to adapt to a larger water depth environment, the manufacturing and installation cost is relatively lower compared with a fixed type offshore fan under the deep and far sea environment condition, and the floating type fan has a market prospect in the deep and far sea area.
The basic types of floating offshore wind power may be classified into Tension Leg (TLP), Semi-submersible (Semi-Sub), and Spar (Spar). The three forms are built on demonstration projects or in construction abroad. Through comprehensive demonstration of the existing fan manufacturing technology and natural conditions in China, the tension leg Type (TLP) is considered to be a floating wind power form which is most suitable for the floating wind power development in China at present.
At present, tendon structures used by most foreign TLP platforms are steel pipes, but when the steel pipes are used as TLP platform tendons, ball joints which can swing in any direction need to be connected between the tendons and a seabed foundation and the platforms respectively, namely tendon connectors, and the tendon connectors are imported products and have complex structures and are further limited and restricted by foreign countries.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a tendon for a tension leg floating type wind power platform, which solves the problem that the tendon of the tension leg floating type platform is not easy to replace, can adjust the tension and has better economical efficiency.
The purpose of the invention is realized as follows: a tendon for a tension leg floating platform is characterized in that a plurality of balance legs are led out from the upper end of the floating platform horizontally and uniformly; a tendon is connected between the outer end 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 seabed 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 the auxiliary anchor chains are arranged in through holes formed in the outer end parts of the same balance legs in a penetrating mode;
the anchor chain adjusting mechanism comprises an anchor chain coarse adjusting mechanism and an anchor chain fine adjusting mechanism with the same number as that of the auxiliary anchor chains; the anchor chain rough adjusting mechanism operates above the floating platform, and the minimum stroke of each adjustment is the length of 2 auxiliary anchor chain rings; each anchor chain fine adjustment mechanism corresponds to one auxiliary anchor chain and is installed at the outer end of the balance leg, each anchor chain fine adjustment mechanism clamps one auxiliary anchor chain penetrating through a through hole of the balance leg and adjusts the length of the auxiliary anchor chain, and each anchor chain fine adjustment mechanism adjusts the length of 0-2 auxiliary anchor chain rings at each time.
The tendon for the tension leg floating type 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 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, passes through the top cover and reaches the outer peripheral surface of the top cover is arranged on 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 type wind power platform is characterized in that the main anchor chain is formed by connecting a plurality of ordinary main anchor chain rings with baffles; the auxiliary anchor chain is formed by connecting a plurality of ordinary auxiliary anchor chain rings with gears.
The tendon for the tension leg floating type wind power platform is characterized in that a 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 type platform has the following characteristics:
1. the problem that tendons of a tension leg floating type platform are not easy to replace is solved;
2. the anchor chain adjusting mechanism is arranged and can adjust the tension of the 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 low, and the economic efficiency is good.
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 a chain micro-adjustment mechanism in a tendon of the present invention;
fig. 5a, 5b and 5c are diagrams showing the state of the tendon according to the present invention when it is adjusted.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 5, four balance legs 11 are led out from the upper end of a floating platform 10 of the tendon for a tension leg floating platform of the present invention horizontally and uniformly, and a tendon is connected between the outer end of each balance leg 11 and a seabed foundation pile 20.
The tendon of the present invention comprises 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 ordinary main anchor chain rings with gears; the auxiliary anchor chains 50 are formed by connecting a plurality of ordinary auxiliary anchor chain rings with gears;
the lower end of the main anchor chain 30 is connected to the seabed 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 penetrate through holes formed in the outer end parts of the same balance leg;
the anchor chain adjusting mechanism comprises a coarse adjusting mechanism and an anchor chain fine adjusting mechanism 60 with the same number as that of the auxiliary anchor chains 50;
the anchor chain rough adjusting mechanism operates above the floating platform 10, and the minimum stroke of each adjustment is the length of 2 auxiliary anchor chain rings;
each anchor chain fine adjustment mechanism 60 corresponds to one auxiliary anchor chain 50 and is arranged at the outer end part of the balance leg 100, each anchor chain fine adjustment mechanism 60 clamps one auxiliary anchor chain 50 penetrating through a through hole of the balance leg 11 and adjusts the length of the auxiliary anchor chain 50, and the stroke of each anchor chain fine adjustment mechanism 60 is 0-2 lengths of the auxiliary anchor chain rings.
Each anchor chain fine adjustment mechanism 60 comprises a hollow screw rod 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 part of the balance leg 11; the nut sleeve 62 is connected to the hollow screw 61 in a threaded manner; the sleeve seat barrel 63 is fixed on the top surface of the nut sleeve 62, and the top surface of the sleeve seat barrel 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, passes through the center of the top cover 64 and reaches the outer peripheral surface of the top cover is arranged on the top cover 64, the width of the channel 64a is matched with the chain diameter of the auxiliary anchor chain 50, and the length of the channel 64a is larger than the outer width of the auxiliary anchor chain ring, so that the auxiliary anchor chain ring is clamped in the channel 64 a; the top surface of the top cover 64 is also provided with a groove 64b at the center, and the width of the groove 64b is matched with the outer width of the auxiliary anchor chain ring.
The working principle of the anchor chain adjusting mechanism for the tendon of the tension leg floating type platform is as follows:
the length of the auxiliary anchor chain 50 is adjusted through 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 adjustment mechanism 60, and in the 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 rod 61 (see fig. 5a), and during fine adjustment, the nut sleeve 62 sleeved on the hollow screw rod 61 is rotated, so that the sleeve seat barrel 63 and the top cover 64 on the nut sleeve 62 are integrally lifted up; 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 auxiliary anchor chain ring on the auxiliary anchor chain 50 parallel to the channel 64a penetrates into the channel 64a of the top cover 64, and the auxiliary anchor chain ring perpendicular to the channel 64a is blocked at the bottom surface of the top cover 64. When fine adjustment is started, the top cover 64 is in a closed state due to self weight, when the sleeve base cylinder 63 and the top cover 64 integrally ascend, the auxiliary anchor chain 50 is pulled by the top cover 64 to ascend together by the length of 1 auxiliary anchor chain ring (see fig. 5b), then the auxiliary anchor chain 50 is lifted above the floating platform 10, so that the top cover 64 is jacked open by the auxiliary anchor chain rings perpendicular to the channel 64a, and when the top cover 64 is opened to a limit state, the auxiliary anchor chain 50 is lifted by the length of 2 auxiliary anchor chain rings (see fig. 5c), and further the auxiliary anchor chain 50 is ascended by the length of 3 auxiliary anchor chain rings, so that the purpose of adjusting the tension of tendons is achieved.
The tendon for a tension leg floating type platform of the present invention is composed of main anchor chains 30 and auxiliary anchor chains 50 of different specifications. When the tendon of the present invention is used, the seabed foundation pile 20 is driven into the deep and distant sea bottom surface to a certain depth, the lower end of the main anchor chain 30 is connected to the seabed foundation pile 20, the upper end of the main anchor chain 30 is 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 arranged in a shallow water area, and the installation construction and the later-stage replacement operation of the auxiliary anchor chain 50 are carried out on the transfer platform 40.
The main anchor chain 30 can satisfy the requirement of service life by increasing the chain diameter to reserve enough corrosion allowance. The auxiliary chain 50 is provided with a surplus number. In the limit state, if one auxiliary anchor chain 50 is broken, the stress of the other auxiliary anchor chains also meets the requirement. When the auxiliary anchor chain 50 needs to be replaced after being used for a period of time, even if one auxiliary anchor chain 50 is removed, the stress of the floating platform 10 meets the requirement, so that the auxiliary anchor chain can be replaced one by one, and the purpose of replacing the anchor chain is achieved.
With the increase of service life, the chain diameter of the anchor chain can be thinned under the action of seawater corrosion, so that the length of the anchor chain is increased, and the tension of tendons can be reduced. The anchor chain coarse adjustment mechanism and the anchor chain fine adjustment 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 type platform has the following characteristics:
1. the problem that tendons of a tension leg floating type platform are not easy to replace is solved;
2. the anchor chain adjusting mechanism is arranged and can adjust the tension of the 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 low, and the economic efficiency is good.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (4)
1. A tendon for a tension leg floating platform is characterized in that a plurality of balance legs are led out from the upper end of the floating platform horizontally and uniformly; a tendon is connected between the outer end of each balance leg and the seabed foundation pile; it is characterized in that the preparation method is characterized in that,
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 seabed 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 the auxiliary anchor chains are arranged in through holes formed in the outer end parts of the same balance legs in a penetrating mode;
the anchor chain adjusting mechanism comprises an anchor chain coarse adjusting mechanism and an anchor chain fine adjusting mechanism with the same number as that of the auxiliary anchor chains; the anchor chain rough adjusting mechanism operates above the floating platform, and the minimum stroke of each adjustment is the length of 2 auxiliary anchor chain rings; each anchor chain fine adjustment mechanism corresponds to one auxiliary anchor chain and is installed at the outer end of the balance leg, each anchor chain fine adjustment mechanism clamps one auxiliary anchor chain penetrating through a through hole of the balance leg and adjusts the length of the auxiliary anchor chain, and each anchor chain fine adjustment mechanism adjusts the length of 0-2 auxiliary anchor chain rings at each time.
2. The tendon for a tension leg floating wind power platform as claimed in claim 1, wherein the anchor chain fine adjustment mechanism includes a hollow screw, a nut sleeve and a sleeve seat barrel; the hollow screw 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, passes through the top cover and reaches the outer peripheral surface of the top cover is arranged on 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.
3. A tendon for a tension leg floating wind power platform as claimed in claim 1 or claim 2 in which the main anchor chain is formed by connecting a plurality of ordinary main anchor chain loops with stops; the auxiliary anchor chain is formed by connecting a plurality of ordinary auxiliary anchor chain rings with gears.
4. The tendon for a tension leg floating wind power platform according to claim 2, wherein a groove having a width adapted to an outer width of the sub anchor chain ring is formed in a center of a top surface of the top cover of the sleeve barrel.
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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| Application Number | Priority Date | Filing Date | Title |
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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 true CN109720514A (en) | 2019-05-07 |
| CN109720514B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112937786A (en) * | 2021-04-30 | 2021-06-11 | 任冬冬 | Anti-collision offshore operation platform with function of reducing influence of wave breaking |
| CN113911288A (en) * | 2021-11-12 | 2022-01-11 | 中交第三航务工程局有限公司 | Method for monitoring operation period of floating type fan TLP platform |
| CN116557215A (en) * | 2023-04-26 | 2023-08-08 | 天津理工大学 | Active tendon mooring system of tension leg platform floating fan |
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| 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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| US4320993A (en) * | 1980-07-28 | 1982-03-23 | Conoco Inc. | Tension leg platform mooring tether connector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112937786A (en) * | 2021-04-30 | 2021-06-11 | 任冬冬 | Anti-collision offshore operation platform with function of reducing influence of wave breaking |
| CN113911288A (en) * | 2021-11-12 | 2022-01-11 | 中交第三航务工程局有限公司 | Method for monitoring operation period of floating type fan TLP platform |
| 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 |
| CN116557215A (en) * | 2023-04-26 | 2023-08-08 | 天津理工大学 | Active tendon mooring system of tension leg platform floating fan |
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| Publication number | Publication date |
|---|---|
| CN109720514B (en) | 2024-03-12 |
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