CN110203332A - A kind of adaptive mild steel arm anchoring system - Google Patents
A kind of adaptive mild steel arm anchoring system Download PDFInfo
- Publication number
- CN110203332A CN110203332A CN201910504803.3A CN201910504803A CN110203332A CN 110203332 A CN110203332 A CN 110203332A CN 201910504803 A CN201910504803 A CN 201910504803A CN 110203332 A CN110203332 A CN 110203332A
- Authority
- CN
- China
- Prior art keywords
- mooring
- arm
- floating drum
- ballast
- anchoring system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B2021/501—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of articulated towers, i.e. slender substantially vertically arranged structures articulated near the sea bed
Abstract
The present invention relates to offshore engineering equipment technical fields, and disclose a kind of adaptive mild steel arm anchoring system, including rotary column, the rotary column are hinged with mooring arm, and the mooring arm is hinged with mooring leg, and the mooring leg is connected with mooring frame.The adaptive mild steel arm anchoring system, since the quality of ballast floating drum will be far smaller than the quality of pontoon, its inertia is smaller, when encountering stormy waves change, mooring arm one initial displacement can first be given and change speed, reduce because of the instantaneous impact that inertia generates, secondly because the biggish ballast floating drum of quality is when calm positioned at underwater, under the action of buoyancy, ballast floating drum does not apply load to connection structure, improve the service life of connection structure, also since its offer restoring force change rate is larger, guarantee that restoring force is less when mooring arm front half section is mobile, guarantee the smallest moving distance, second half section restoring force is larger, movement is avoided to overstep the extreme limit.
Description
Technical field
The present invention relates to field of ocean engineering, specially a kind of adaptive mild steel arm anchoring system.
Background technique
FPSO has been increasingly becoming the major way of offshore oil exploitation, and soft yoke mooring system is common mating with FPSO
Anchoring system, be usually used in the exploitation of shallow sea marginal oil field, referring to Fig. 1, soft yoke mooring system include turn to tower, mooring
Arm, mooring leg and mooring frame, when meeting with stormy waves, pontoon is rotated around tower is turned to the smallest side in wind face, improves mooring system
The capacity of anti-storm of system, meanwhile, the side of mooring arm is equipped with ballast tank, acquisition gravitional force is elevated when having stormy waves,
So that ship may return to original position when stormy waves is small.
Although the ballast tank in mooring arm plays buffer function during raising, make between pontoon and anchoring system
Active force be gradually increased, reduce the impact force that anchoring system is subject to, improve the service life of anchoring system, but mooring
System is large scale equipment, and mooring arm often also has several hundred upper kilotons, changes in a flash in stormy waves, due to the effect of inertia, is
The bindiny mechanism of pool arm still suffers from biggish moment strength, but due to bindiny mechanism be all it is hinged, there are certain seams
Gap, and the destructive power of moment strength is increased, constrain the service life and reliability of anchoring system.
Further, since the quality of mooring arm ballast tank is larger, the load of bindiny mechanism is also just larger, long-term
The big load reduction service life of bindiny mechanism, further reduced the service life and reliability of anchoring system, another party
Face, ballast water are sealed in the ballast tank of mooring arm, in order to avoid winter low temperature rises bad mooring arm, are needed in some areas inner
Anti-icing fluid is loaded in face, and up to a hundred tons of anti-icing fluid considerably increases use cost.
Further, since pontoon is fully loaded and unloaded geological measuring difference is especially big, and mooring arm ballast quality be
Fixedly, constrain it and act as land used range, if ballast quality is excessive, pontoon empty mass more lightly when, ballast arm
Angle displacement is smaller, and buffering effect is also poor, if ballast quality settings are too small, when pontoon full load and is easy to transport mooring arm
It is dynamic to overstep the extreme limit, it is damaged.
Summary of the invention
For the deficiency of above-mentioned background technique, the present invention provides a kind of adaptive mild steel arm anchoring systems, have and mention
Preceding movement, response quality is small and restoring force changes advantage greatly, solves the problems, such as background technique proposition.
The invention provides the following technical scheme: a kind of adaptive mild steel arm anchoring system, including rotary column, the rotation
Tower is hinged with mooring arm, and the mooring arm is hinged with mooring leg, and the mooring leg is connected with mooring frame, the mooring frame peace
On pontoon deck, the lower end of the mooring arm is hinged with connecting rod, and the mooring arm is hinged with ballast by connecting rod and floats
One end of cylinder, the mooring arm is equipped with clump weight.
Preferably, the mooring arm is less than the length of connecting rod, the mooring arm to sea to the minimum vertical height on sea
The angle of the maximum length disposed height and be greater than the length sum of connecting rod and ballast floating drum in face, the mooring arm and rotary column is most
The angle of hour connecting rod and mooring arm is at an acute angle.
Preferably, the clump weight is solid slug, the weight of the clump weight and mooring arm and the weight less than ballast floating drum
The inside of amount, the ballast floating drum is equipped with ballast water cavity and cavity.
Preferably, the lateral wall of the ballast floating drum is equipped with uniform water resistance bag, the opening direction rotation of the water resistance bag
The upper end of tower, the ballast floating drum is equipped with through-hole.
The present invention have it is following the utility model has the advantages that
1, the adaptive mild steel arm anchoring system, since the quality of ballast floating drum will be far smaller than the quality of pontoon,
Inertia is smaller, and when encountering stormy waves change, first one step of pontoon of ballast floating drum meeting is subjected to displacement, ballast buoy displacement Shi Huitong
It crosses connecting rod and one horizontal tractive force is applied to mooring arm, give mooring arm one initial displacement and change speed, float later
The tractive force of ship, which passes over, further promotes mooring arm to be displaced, and reduces the destruction because of the instantaneous impact that inertia generates
Power, on the other hand, since three mooring arm, clump weight and ballast floating drum components constitute the offer structure of restoring force, and mooring
The quality of arm and clump weight is smaller, therefore it is pulled power effect of inertia is also small when influence, further reduced instantaneous
The destructive power of strength improves the service life of connection structure and the reliability of entire anchoring system.
2, mooring arm and the quality of clump weight are smaller in the adaptive mild steel arm anchoring system, and the biggish ballast of quality
Floating drum is positioned under water when calm, and under the action of buoyancy, ballast floating drum does not apply load to connection structure, substantially
Degree reduces the load of connection structure, improves its service life, and on the other hand, ballast water is all stored in ballast floating drum, presses
It carries floating drum to be located in seawater, compare in midair, the temperature change of seawater is smaller, while ballast floating drum takes opening to design, will not
Damaged because of internal expansion, also, ballast floating drum has damaged only influence anchoring system high sea when restoring force, and
Use of anchoring system when calm is not influenced, substantially increases the reliability of anchoring system.
3, the adaptive mild steel arm anchoring system improves the main restoring force of anchoring system, ballast by ballast floating drum
For the restoring force that floating drum improves other than angle change bring increases, there are also float as ballast floating drum is suggested water surface bring
Power reduces bring and increases, and therefore, in the height change of mooring arm, the restoring force that front half section provides is smaller, therefore, compared with
Small tractive force can also bring biggish displacement, adequately be buffered to tractive force, and the second half section its restoring force it is larger, therefore
It is also unlikely beyond limit of sports record can to bear biggish tractive force, on the other hand, due to changing greatly for restoring force, front half section
Restoring force will be far longer than front half section, thus the second half section to the decelerating effect of pontoon might as well, it is mobile super to further avoid mooring arm
Limit, plays preferable protective effect to mooring arm, further increases the reliability of anchoring system.
Detailed description of the invention
Fig. 1 is existing structure schematic diagram of the invention；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is the stereoscopic schematic diagram of ballast floating drum in the present invention；
Fig. 4 is the cross-sectional view of ballast floating drum in the present invention；
Structure chart when Fig. 5 is structure of the invention rigid setting in motion；
Structure chart when Fig. 6 is limiting condition of the present invention.
In figure: 1, rotary column；2, mooring arm；3, mooring leg；4, mooring frame；5, ballast floating drum；6, connecting rod；7, counterweight
Block；8, water resistance bag；9, it is open；10, ballast water cavity；11, cavity.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It please refers to Fig. 2-6, a kind of adaptive mild steel arm anchoring system, including rotary column 1, rotary column 1 and is hinged with mooring
Arm 2, mooring arm 2 can mooring arm 2 can be rotated upwardly and downwardly also simultaneously around 1360 degree of rotary column rotations, and mooring arm 2 is hinged with mooring
Leg 3, mooring leg 3 and mooring arm 2 and rotary column 1 and the angulation change of mooring arm 2 improve pontoon and return to restoring force in situ, mooring
Leg 3 is connected with mooring frame 4, and mooring frame 4 is mounted on pontoon deck, and the lower end of mooring arm 2 is hinged with connecting rod 6, connection
Ballast water is mounted in bar 6, the global density of connecting rod 6 is similar to the density of seawater, and the upper surface of connecting rod 6 is attached on sea
Closely, mooring arm 2 is hinged with ballast floating drum 5 by connecting rod 6, guarantees that ballast floating drum 5 is vertical, avoids connecting rod 6 from being damaged, mooring
One end of arm 2 is equipped with clump weight 7, and clump weight 7 provides a smallest restoring force, improves the stability of anchoring system.
Wherein, mooring arm 2 is less than the length of connecting rod 6 to the minimum vertical height on sea, and ballast floating drum 5 receives wind wave action
When mobile, the angle of connecting rod 6 is straightened, and is improved an active force to mooring arm 2 in advance, is moved mooring arm 2 in advance, is reduced used
Property influence, the maximum disposition height of mooring arm 2 to sea is greater than the length of the length sum of connecting rod 6 and ballast floating drum 5, when being
Close to when becoming straight line, ballast floating drum 5 is suggested level completely, reduces ballast floating drum 5 for pool arm 2 and mooring leg 3
Traction with the direct resistance of water to rotary column 1 reduces the stress of rotary column 1, the stress redundancy of rotary column 1 when discharging the limit,
The angle of connecting rod 6 and mooring arm 2 is at an acute angle when mooring arm 2 and the angle minimum of rotary column 1, guarantees that ballast floating drum 5 is called prisoners in after letting them out for exercise wave
To the thrust direction of mooring arm 2 when effect.
Wherein, clump weight 7 is solid slug, and the restoring force that clump weight 7 improves is smaller, and quality is smaller not to influence mooring arm 2
Installation, while not needing when pontoon and anchoring system emergency escape to recycle in advance or release ballast water yet, improve quickly de-
From speed, the weight of clump weight 7 and mooring arm 2 and the weight less than ballast floating drum 5,5 potential variation of ballast floating drum provide floating
Ship returns to most of restoring force in situ, while guaranteeing that second half section restoring force is significantly larger than front half section, ballast when mooring arm 2 is mobile
The inside of floating drum 5 is equipped with ballast water cavity 10 and cavity 11, controls ballast floating drum 5 by the ratio of ballast water cavity 10 and cavity 11
Global density makes its global density be equal to or slightly less than the density of seawater.
Wherein, the lateral wall of ballast floating drum 5 is equipped with uniform water resistance bag 8, only one opening of water resistance bag 8 and opening direction
Identical, the opening of water resistance bag 8 increases the resistance that water drinks ballast floating drum 5 towards rotary column 1, and the influence for making it receive wave is bigger,
Compared with pontoon reaction faster, the upper end of ballast floating drum 5 is equipped with through-hole 9, avoids seawater from expanding with heat and contract with cold and damages ballast floating drum 5.
The working principle of the adaptive mild steel arm anchoring system:
When encountering lesser stormy waves and when pontoon load is smaller, pontoon is moved horizontally, and pulls mooring arm by mooring leg 3
2 is mobile, changes angle, and the angle that also changes with mooring arm 2 of ballast floating drum 5 is mobile, but is not suggested the water surface or only proposes
A bit, mainly improving restoring force by clump weight 7 at this time makes pontoon return to original position.
When stormy waves is larger and pontoon load is larger, the first pontoon of ballast floating drum 5 is mobile, and ballast floating drum 5 is under stormy waves
It moves horizontally, mooring arm 2 is propped up by connecting rod 6, give the initial velocity of mooring arm 2 one obliquely, the tractive force of pontoon makes
Mooring arm 2 is further mobile, while ballast floating drum 5 gradually being lifted under water, as ballast floating drum 5 is raised, ballast floating drum 5
Suffered buoyancy is reduced, and gravity increases the active force of mooring arm 2, when pontoon is to mooring arm 2 and tractive force and restoring force phase
Meanwhile pontoon continues to move under effect of inertia, and ballast floating drum 5 continues to be raised, restoring force further increases, and replys at this time
Power slows down to pontoon, and biggish restoring force faster falls pontoon movement speed.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of adaptive mild steel arm anchoring system, including rotary column (1), the rotary column (1) are hinged with mooring arm (2),
The mooring arm (2) is hinged with mooring leg (3), and the mooring leg (3) is connected with mooring frame (4), mooring frame (4) peace
On pontoon deck, it is characterised in that: the lower end of the mooring arm (2) is hinged with connecting rod (6), and the mooring arm (2) is logical
It crosses connecting rod (6) to be hinged with ballast floating drum (5), one end of the mooring arm (2) is equipped with clump weight (7).
2. the adaptive mild steel arm anchoring system of one kind according to claim 1, it is characterised in that: the mooring arm (2)
It is less than the length of connecting rod (6) to the minimum vertical height on sea, the maximum disposition height of the mooring arm (2) to sea is greater than
The length of connecting rod (6) and the length sum of ballast floating drum (5) connects when the mooring arm (2) is with the angle minimum of rotary column (1)
The angle of bar (6) and mooring arm (2) is at an acute angle.
3. the adaptive mild steel arm anchoring system of one kind according to claim 1, it is characterised in that: the clump weight (7)
For solid slug, the weight of the clump weight (7) and mooring arm (2) and the weight for being less than ballast floating drum (5), the ballast floating drum
(5) inside is equipped with ballast water cavity (10) and cavity (11).
4. the adaptive mild steel arm anchoring system of one kind according to claim 1, it is characterised in that: the ballast floating drum
(5) lateral wall is equipped with uniform water resistance bag (8), and the opening of the water resistance bag (8) is towards rotary column (1), the ballast floating drum
(5) upper end is equipped with through-hole (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910504803.3A CN110203332A (en) | 2019-06-12 | 2019-06-12 | A kind of adaptive mild steel arm anchoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910504803.3A CN110203332A (en) | 2019-06-12 | 2019-06-12 | A kind of adaptive mild steel arm anchoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110203332A true CN110203332A (en) | 2019-09-06 |
Family
ID=67792191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910504803.3A Withdrawn CN110203332A (en) | 2019-06-12 | 2019-06-12 | A kind of adaptive mild steel arm anchoring system |
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| Country | Link |
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| CN (1) | CN110203332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981067A (en) * | 2019-12-23 | 2020-04-10 | 中国船舶重工集团公司第七一九研究所 | Offshore nuclear energy water supply floating platform and water supply method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101384474A (en) * | 2006-02-23 | 2009-03-11 | 蓝水能源服务有限公司 | Mooring system for a floating structure |
| WO2011137903A2 (en) * | 2010-05-05 | 2011-11-10 | Stephan Moellgaard Henriksen | Semi-submerged multiple wind-turbine system |
| CN105818930A (en) * | 2016-03-11 | 2016-08-03 | 大连理工大学 | Improved damping type soft steel arm single-point mooring device |
| CN108639249A (en) * | 2018-05-08 | 2018-10-12 | 太重（天津）滨海重型机械有限公司 | Floatage-type single point mooring system |
| CN208855826U (en) * | 2018-09-26 | 2019-05-14 | 中国船舶重工集团公司第七一九研究所 | It is a kind of can quick-release mooring arrangement |
-
2019
- 2019-06-12 CN CN201910504803.3A patent/CN110203332A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101384474A (en) * | 2006-02-23 | 2009-03-11 | 蓝水能源服务有限公司 | Mooring system for a floating structure |
| WO2011137903A2 (en) * | 2010-05-05 | 2011-11-10 | Stephan Moellgaard Henriksen | Semi-submerged multiple wind-turbine system |
| CN105818930A (en) * | 2016-03-11 | 2016-08-03 | 大连理工大学 | Improved damping type soft steel arm single-point mooring device |
| CN108639249A (en) * | 2018-05-08 | 2018-10-12 | 太重（天津）滨海重型机械有限公司 | Floatage-type single point mooring system |
| CN208855826U (en) * | 2018-09-26 | 2019-05-14 | 中国船舶重工集团公司第七一九研究所 | It is a kind of can quick-release mooring arrangement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981067A (en) * | 2019-12-23 | 2020-04-10 | 中国船舶重工集团公司第七一九研究所 | Offshore nuclear energy water supply floating platform and water supply method |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190906 |
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