CN105584603B - The auto-strengthening device that topples of single point mooring's floating structure - Google Patents
The auto-strengthening device that topples of single point mooring's floating structure Download PDFInfo
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- CN105584603B CN105584603B CN201610157048.2A CN201610157048A CN105584603B CN 105584603 B CN105584603 B CN 105584603B CN 201610157048 A CN201610157048 A CN 201610157048A CN 105584603 B CN105584603 B CN 105584603B
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- floating body
- righting
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- auto
- swing arm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
- B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The auto-strengthening device that topples of single point mooring's floating structure, it is characterised in that：Between floating body and floating body mooring anchor chain；Including installed in floating body lower surface, to a supporting construction of floating body lower section extension, a righting swing arm is installed below the supporting construction, is flexibly connected between righting swing arm and supporting construction, a pouring weight is installed below righting swing arm, pouring weight lower section is connected with mooring anchor chain.The inventive structure is simple, it is easy to manufactures and installs, is particularly suitable on single point mooring's marine floating type works of small size, improves sea-keeping of the floating body in wave, and realize floating body topple after auto-strengthening, it is ensured that the safety of device.
Description
Technical field
The invention belongs to ocean engineering field of mechanical technique, it is related to a kind of overturn-preventing structure of ocean floating body, specifically,
It is related to auto-strengthening device after the toppling of a kind of single point mooring's floating structure.
Background technology
Single point mooring's floating structure is the general designation of a class marine float structure, and this kind of works generally includes to be located on sea
Floating body and anchor chain for moored float, floating body is fixed on a certain fixed position in ocean by anchor system.Such as marine environment
The various data buoy and ship mark, the float-type wave energy apparatus using wave-energy power generation, the navigation mark for ship piloting of monitoring
Lamp etc..
Various instrument and equipments are generally carried in such works deck or float cabin, specific function is realized.With sea
Exemplified by foreign environmental monitoring buoy, miniature antenna, wind transducer, Temperature Humidity Sensor etc. generally are equipped with the deck of floating body,
Centralized control center, battery, generator etc. are provided with the inner chamber of floating body.Influenceed by sea situation, swimming in the floating body on sea will meet with
Acted on by wave, wind and ocean current.Although such works has carried out Calculation of Stability at the beginning of construction, such as：In order to increase
The stability of floating body, it will usually weight is installed in float cabin, increases the ballast of floating body, and to reduce the center of gravity of floating body, increase is floating
The stability of body, but this structure can take in float cabin using space, while it is possible in exceedingly odious sea situation or
It can be toppled in the case of fortuitous collision, and once toppled, it is impossible to auto-strengthening, cause damage.
The content of the invention
It is an object of the invention to provide auto-strengthening device, the device after the toppling of a kind of single point mooring's floating structure
It can ensure that after toppling, auto-strengthening can be realized within a short period of time for floating structure, to maintain the normal of system
Working condition.
Technical scheme is as follows：The auto-strengthening device that topples of single point mooring's floating structure, installed in floating body
Between floating body mooring anchor chain；Including installed in floating body lower surface, to a supporting construction of floating body lower section extension, the support knot
A righting swing arm is installed below structure, is flexibly connected between righting swing arm and supporting construction, has a pouring weight below righting swing arm, weight
It is connected below block with mooring anchor chain.
Preferably：Supporting construction includes a frame structure, and base of frame has a pinboard, righting swing arm and pinboard
Connect.
Preferably：It is hinged between righting swing arm and supporting construction by universal.Righting swing arm can freely be put around universal hinge
Dynamic and rotation.
Preferably：Pouring weight is circle, and damped coefficient is small.
Preferably：Under upright condition, the center of gravity of the Floating System that floating body is constituted with auto-strengthening device is with centre of buoyancy same
On one plumb line.
Beneficial effects of the present invention are：
1st, compared with traditional floating body bottom centre is mounted directly the mooring structure of anchor chain, the present invention is in the increase of floating body bottom
One frame structure, tethers point is located at base of frame, reduces anchor system position of action point, adds the righting moment of anchor system, increases
The strong stability of surface floating body.
2nd, floating body under(-)chassis lower end connection single pendulum structure, the pouring weight of single pendulum reduces the weight of floating body as outside ballast
Heart position, it is to avoid configure the inconvenience of ballast in floating body interior compartment, while adding effective using empty inside float cabin
Between.
3rd, base of frame is hinged a single pendulum structure by universal, and the single pendulum can be swung with waving for floating body, can
Partially absorb the wave excitation energy that Floating System is born, reduction floating body is waved and the motor imagination, enhancing such as heaving with wave
The sea-keeping of floating body.
4th, after moored float topples, single pendulum structure is rocked in base of frame plane under gravity, now pouring weight weight
The heart is located away from floating body centre of buoyancy position, produces a righting moment, ensures that righting arm GZ is small under this state by calculating
In zero, you can ensure that floating body can voluntarily recover to upright condition.
5th, the inventive structure is simple, it is easy to manufactures and installs, is particularly suitable for the single point mooring ocean of small size
On floating structure, improve sea-keeping of the floating body in wave, and realize floating body topple after auto-strengthening, it is ensured that the peace of device
Entirely.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the stress diagram after floating body is tilted.
Fig. 3 is the upright condition statical stability curve of righting arm comparison diagram that floating body is equipped with before and after auto-strengthening device.
Configuration states and stress diagram of the Fig. 4 for the present invention after toppling.
Fig. 5 is the state statical stability curve of righting arm comparison diagram that topples that floating body is equipped with before and after auto-strengthening device.
Wherein：1- floating bodies, 2- frameworks, the universal hinges of 3-, 4- righting swing arms, 5- pouring weights, 6- mooring anchor chains, 7- floating body centers of gravity,
8- floating bodies centre of buoyancy, 9- pinboards
Embodiment
As shown in figure 1, the auto-strengthening device that topples of single point mooring's floating structure, installed in floating body 1 and floating body mooring
Between anchor chain 6；Including installed in the lower surface of floating body 1, to a supporting construction of the lower section of floating body 1 extension, supporting construction be floating body and
Erection device provides the effect of switching.Design for convenience, also for the stability of structure, supporting construction uses the structure of framework 2,
Framework 2 is made using tubing or section bar, is polygonized structure, in the case where floating body 1 top-ups, and reduction floating body 1 is anchor point.
The lower section of the bottom of framework 2 has a structure transferred with righting swing arm 4, and the exchanging structure includes a pinboard 9,
Pinboard 9 fills for flat board, parallel to the direction on sea.Righting swing arm 4 uses rigidity material, is metal tube or metal bar, vertically
Extend downwardly, be active link between righting swing arm 4 and pinboard, righting swing arm 4 can turn around the junction of itself and pinboard 9
It is dynamic.Universal hinge 3 is installed, righting swing arm 4 is connected by universal hinge 3 with pinboard 9, in wave in the present embodiment, at pinboard
In the presence of, righting swing arm 4 rotate freely waving around universal hinge 3, absorbs the energy that a part of wave is applied on floating body 1
Amount, adapts to the incentive action of all directions wave.
There is a pouring weight 5 lower section of righting swing arm 4, is integrated between pouring weight 5 and righting swing arm 4 or dismountable structure, pouring weight 5
Lower section is connected with mooring anchor chain 6.Pouring weight 5 is metal or the cement pouring weight poured, in order to reduce resistance coefficient, the profile of pouring weight 5
It is designed as spherical.With traditional anchor chain directly compared with the structure that floating body 1 connects, the installation of pouring weight 5 reduces whole floating body system
The center of gravity of system, so that the stability of floating body is added, meanwhile, pouring weight 5 can also absorb the energy waved that a part of wave is brought,
The amplitude of waving of floating body 1 is reduced, increases the seakeeping capacity of floating body 1.On the other hand, pouring weight 5 instead of in floating body cabin
Ballast, add effective utilization space inside float cabin, it is to avoid the inconvenience configured in floating body interior compartment.
The Floating System that floating body 1 and erection device are constituted is designed as under symmetrical structure, upright condition, and floating body 1 with helping automatically
The center of gravity for the Floating System that equipment is constituted is with centre of buoyancy on same plumb line.This structure is conducive to increasing whole Floating System
Stability.
Influence of the wave to floating body 1, it is relatively light in the case of, can only cause the swing of floating body 1, but floating body 1 still keeps top-uping
State, in this case, Floating System sea floating situation as shown in Figures 2 and 3.
It is the cross section of an inclination floating body 1 referring to Fig. 2.The floating body is tilted necessarily in the presence of outside heeling moment
Angle φ, the position of centre of gravity of floating body 1 is G, is not changed, displacement of volume Δ is equal in weight with floating body, does not also change.But it is due to
The change of waterline position, the displacement of volume shape of floating body 1 changes, and centre of buoyancy is moved to B by B1Place.Now, center of gravity and centre of buoyancy
It is no longer on same plumb line, thus buoyancy and gravity one couple of formation, that is, promote floating body 1 to be returned to original equilbrium position
Righting moment MR.Make straight line GZ perpendicular to the vertical line by B1 from center of gravity G, then righting moment MRExpression formula is as follows：
MR=Δ GZ
Wherein, GZ is righting arm, calculates the righting arm corresponding to different angle φ, and is depicted as curve, that is, is obtained
The curve of statical stability of floating body, as shown in Figure 3.If righting moment and heeling moment is in opposite direction, GZ is on the occasion of meaning
When tilting external force once disappearing, it can make floating body 1 be returned to original equilbrium position of top-uping.If righting moment and heeling moment
Direction it is identical, then GZ be negative value, can promote floating body 1 continue tilt.
As shown in Figure 2, after the bottom of floating body 1 increases auto-strengthening device, the center of gravity of floating body 1 is dropped at G1, now
Righting arm G1Z1 is more than former righting arm GZ, it was demonstrated that floating body 1 has bigger righting moment, stability under same tilt angle
It is improved.From figure 3, it can be seen that compared with the situation without auto-strengthening device, after increase automatic floating device, Floating System
Righting arm will greatly increase.
If sea situation is more severe, wave to floating body 1 will produce compared with ill effect, it is more serious in the case of, floating body 1 can be caused
Topple, in this case, the system of floating body 1 sea situation as shown in Figure 4 and Figure 5.
Referring to Fig. 4, when floating body 1 can topple when exceedingly odious sea situation or fortuitous collision, due to
Self gravitation effect, swing arm 4 can be swung to the bottom patch plate 9 of under(-)chassis around universal hinge 3, and the centroidal distance of pouring weight 5 is floated
The distance of body center line is approximately pendulum arm length, therefore the overall center of gravity 7 of floating body is not arranged on the same straight line with floating body centre of buoyancy 8, meeting
Form a righting moment M.Under the combination of the different length of swing arm 4 and the weight of pouring weight 5, the mass parameter of floating body 1 is different, quiet steady
Property is also different.The suitable length of swing arm 4 and the weight of pouring weight 5 are selected, the curve of statical stability of floating body 1 under the state is calculated, if
The righting arm GZ of floating body 1 is respectively less than zero in the range of 180 °, you can ensure that floating body 1 can be realized under the single pendulum configuration status
Auto-strengthening.
Referring to Fig. 5, by taking diameter 6m disc type single point mooring Wave energy electric generator as an example, calculate its outfit and help automatically
The stability curve of righting arm of state of toppling before and after equipment.Solid line is that the floating body 1 that bottom does not have auto-strengthening device is inclining
Curve of righting arm after covering, by curve, after floating body 1 topples, is approximately less than in the range of 75 ° in its roll angle, floating body 1
Righting arm GZ is on the occasion of illustrating that floating body 1 possesses certain restoring moment within this range, that is, the floating body 1 toppled can not be realized
Auto-strengthening, only after the angle of inclination of floating body is more than 75 °, floating body 1 could voluntarily reset into upright condition.But it is equipped with
The floating body 1 of auto-strengthening device is after toppling, and its righting arm GZ is consistently less than zero in the range of 180 °, illustrates that floating body 1 topples
Afterwards, its righting moment is identical with the direction of heeling moment, floating body 1 can be promoted to continue to tilt, you can automatically revert to upright condition.
Claims (3)
1. the auto-strengthening device that topples of single point mooring's floating structure, it is characterised in that：Installed in floating body and floating body mooring anchor
Between chain；Including installed in floating body lower surface, to a supporting construction of floating body lower section extension, it is provided with below the supporting construction
One righting swing arm, is flexibly connected between righting swing arm and supporting construction, has below righting swing arm below a pouring weight, pouring weight and mooring
Anchor chain is connected；The supporting construction includes a frame structure, and base of frame has a pinboard, righting swing arm and pinboard phase
Connect；Under upright condition, the center of gravity for the Floating System that floating body is constituted with auto-strengthening device and centre of buoyancy are on same plumb line.
2. the auto-strengthening device that topples of single point mooring's floating structure as claimed in claim 1, it is characterised in that：It is described to help
Just it is hinged between swing arm and supporting construction by universal.
3. the auto-strengthening device that topples of single point mooring's floating structure as claimed in claim 1, it is characterised in that：It is described heavy
Block is circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157048.2A CN105584603B (en) | 2016-03-18 | 2016-03-18 | The auto-strengthening device that topples of single point mooring's floating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157048.2A CN105584603B (en) | 2016-03-18 | 2016-03-18 | The auto-strengthening device that topples of single point mooring's floating structure |
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| Publication Number | Publication Date |
|---|---|
| CN105584603A CN105584603A (en) | 2016-05-18 |
| CN105584603B true CN105584603B (en) | 2017-08-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107054576A (en) * | 2016-12-12 | 2017-08-18 | 杭州跟策科技有限公司 | The anti-dumping type drilling platforms of semi-submersible type Ke lookouts |
| CN112793729B (en) * | 2021-01-25 | 2022-08-23 | 中国铁建港航局集团有限公司 | Anti-slamming device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1550935A (en) * | 1976-04-26 | 1979-08-22 | Marine Exploration Ltd | Marine buoy |
| GB0321768D0 (en) * | 2003-09-17 | 2003-10-15 | Ocean Power Delivery Ltd | Mooring system |
| US20110209651A1 (en) * | 2010-03-01 | 2011-09-01 | My Technologies, L.L.C. | Riser for Coil Tubing/Wire Line Injection |
| CN201818435U (en) * | 2010-10-22 | 2011-05-04 | 林雨鑫 | Floating vertical rotation axis wind turbine |
| JP5918503B2 (en) * | 2011-11-04 | 2016-05-18 | 拓樹 中村 | Floating fluid power utilization system and wind power propulsion ship using the same |
| CN202379060U (en) * | 2011-11-30 | 2012-08-15 | 浙江海洋学院 | Ocean current monitoring system carrying platform |
| CN102705175A (en) * | 2012-05-09 | 2012-10-03 | 展翔海事(大连)有限责任公司 | Floating type wind power tower |
| CN203889017U (en) * | 2014-05-23 | 2014-10-22 | 国家海洋局第二海洋研究所 | Floating offshore platform |
| CN104229095A (en) * | 2014-09-09 | 2014-12-24 | 中国电子科技集团公司第五十四研究所 | Anti-overturning flat boat |
| CN205632955U (en) * | 2016-03-18 | 2016-10-12 | 中国海洋大学 | Automatic righting device that topples of single point mooring floating structure thing |
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2016
- 2016-03-18 CN CN201610157048.2A patent/CN105584603B/en active Active
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