CN104494793A - 10,000 TEU-above ultra-large container ship based on novel ballast tanks - Google Patents
10,000 TEU-above ultra-large container ship based on novel ballast tanks Download PDFInfo
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- CN104494793A CN104494793A CN201410729824.2A CN201410729824A CN104494793A CN 104494793 A CN104494793 A CN 104494793A CN 201410729824 A CN201410729824 A CN 201410729824A CN 104494793 A CN104494793 A CN 104494793A
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Abstract
The invention discloses a container ship based on novel ballast tanks. Side ballast tanks are symmetrically arranged at two shipboards; and the side ballast tank at every shipboard is divided into an upper-layer ballast tank 1 and a lower-layer ballast tank 2, wherein the tank height of the upper-layer ballast tank is 20-80% of the whole tank height of the upper-layer ballast tank and the lower-layer ballast tank 2. All the side ballast tanks of the ultra-large container ship are designed to have upper and lower layers. In the navigation and the use of the ship, under the precondition of satisfying usage specifications, the height of the gravity center of side ballast water is raised, the upper-layer side ballast tanks are used for loading to the greatest extent, and the difference between the height of the gravity center and the height of the stability can be effectively reduced, so that the height of the initial stability of the ship is reduced, the roll period and the roll initial velocity of the ship are improved, and the crew safety and living comfort and the container loading safety and sealing safety are improved.
Description
Technical field
The present invention relates to ship design field, more particularly, relate to the ship form design of ten thousand casees above super-container vessel based on safety perspective.
Background technology
Marine ballast water tank all designs between cargo hold and outboard plate, and boats and ships regulate floading condition by ballast water capacity, to ensure the normal/cruise of boats and ships.Particularly for super-container vessel, ballast water can not only adjust method of ship floating condition, and using the ballast water after optimizing to arrange effectively can also improve safety of ship.
Tradition ten thousand casees above super-container vessel moldeed depth are very high, two side of a ship ballast tanks are individual tank body 4 as shown in Figure 1, make its two sides of a ship ballast water height of gravitational center vary within wide limits, load as used the limit ballast water of bottom ballast and certain altitude, its ballast water center of gravity is on the low side, and boats and ships metacentric height is higher than center of gravity usually, and substantially remains unchanged, thus cause center of gravity and the increase of metacentric height difference of super-container vessel, both initial stability was tall and big.Just bring the ship rolling cycle thus short, and roll acceleration is large, the period of rolling of ship more hyphen to shake initial velocity also larger, this makes lashing of container system bear larger pulling force, increases the risk that lashing of container system is damaged.Meanwhile, rolling velocity increases, and crewman easily falls and injured, and easily occurs seasick phenomenon, reduces the traveling comfort that crewman lives.
Boats and ships want reduction by 0.1 meter of metacentric height to be very difficult thing, and this needs to use a large amount of design optimizations to calculate and just likely can realize, but the great majority effect that all out of reach is desirable.For the box ship, particularly super-container vessel that evenly load, difficulty especially, effectively can only reduce metacentric height by reducing container load in cargo hold.
Summary of the invention
The present invention is intended to change ballast tank and arranges, improves the design concept of super-container vessel safety, uses side ballast tank, and improve safety and crewman's comfortable for living of ship's navigation, the present invention is applicable to ten thousand casees above super-container vessel oceangoing ships.
In order to achieve the above object, the present invention is based on ten thousand casees above super-container vessel of novel ballast tank, two topsides are symmetrical arranged side ballast tank, and the side ballast tank of each topside is divided into upper strata ballast tank and lower floor's ballast tank.Wherein, the cabin height of described upper strata ballast tank be the overall cabin of described upper strata ballast tank and described lower floor ballast tank high 20% to 80% between.
In addition, described boats and ships bow, to two topsides of stern, except arranging position, cabin, is all the double-deck ballast tank that several are made up of upper strata ballast tank and lower floor's ballast tank.
Whole for super-container vessel side ballast tank is all designed to two-layer up and down by the present invention, in actual operation, only use upper strata side ballast tank to load ballast water, effectively reduce the rolling of boats and ships like this, ensure that the nevigation safety of boats and ships, freight container sealing safety and crewman in ship's navigation live and grasp the traveling comfort of ship.Because ship rolling acceleration/accel reduces, improve the design condition of lashing of container equipment on deck, effectively reduce the requirement of strength to box ship colligation bridge, and then reduce laid down cost.
And when boats and ships are at normal operation, for ensureing vessel carrying capacity, under the conditions such as ballast water capacity, method of ship floating condition, hull structural strength, regulate if only use upper strata ballast tank to carry out loading, metacentric height can be made so rationally to reduce.The beneficial effect of this design is:
1. because side ballast tank is designed to two-layer up and down, initial stability of vessel height reduces, and can improve the ship rolling cycle, reduces roll acceleration, improves the nevigation safety of boats and ships and the traveling comfort of crewman's inhabitation.
2. compared with conventional super-container vessel, metacentric height reduces, and ensure that freight container sealing in ship's navigation is easier, avoids goods impaired.And box ship is due to the reduction of ship rolling acceleration/accel, effectively can reduce the intensity of colligation bridge, and then reduce laid down cost.
Accompanying drawing explanation
Fig. 1 is the design form schematic diagram of super-container vessel side ballast tank under prior art; .
Fig. 2 is the project organization schematic diagram of super-container vessel side ballast tank of the present invention.
The design side-looking structural representation of the whole side ballast tank of a kind of super-container vessel of Fig. 3 embodiment.
Detailed description of the invention
As shown in figures 2-3, whole side ballast tank is arranged to two-layer up and down compared with designing with loading ten thousand casees above prior art super-container vessel side ballast tank by the present invention.After side ballast tank layering, upper strata ballast tank 1 cabin is high account for the overall cabin of former side ballast tank high 20% to 80% between, both 20%≤d1/d≤80% (for 7 pairs of side ballast tanks and d1/d=50% in Fig. 3), concrete cabin needs to define according to actual ship form and design requirement at high proportion.
The present invention improves the novel ballast tank design of the above container ship of loading ten thousand casees (super-container vessel) safety, has redesigned side ballast tank, has all been designed to two-layer up and down by whole for super-container vessel side ballast tank.After side ballast tank layering, each upper side ballast tank cabin is high account for the overall cabin of former side ballast tank high 20% to 80% between.The present invention improves the height of ship loading ballast water, reduces initial stability of vessel high.Be conducive to improving the safety of boats and ships and the comfortable for living of crewman, reduce freight container transverse acceleration on deck excessive and be the threat of solid safety.
The present invention abandons the unit design of conventional single side ballast tank, side ballast tank is designed to the form of upper and lower two-layer ballast tank.Concrete mode is as follows:
Super-container vessel side ballast tank is by traditional single limit ballast, whole design optimization is upper and lower two-layer side ballast tank, both in side ballast tank, increased by one direction waterproof bulkhead, guarantee each treating selvedge ballast tank to be divided into upper and lower two-layer not connected side ballast tank.And the high ballast tank in upper and lower identical cabin can be divided into according to actual ballast amount demand, also can be designed to the side ballast tank that upper and lower different cabin is high.But ensure that side ballast tank cabin height need account between overall ballast tank cabin high 20% ~ 80%, both in Fig. 1,20%≤d1/d≤80%.All side ballast tanks in full ship are all arranged according to above-mentioned, and ensure that the ratio that all upper side ballast tanks account for overall ballast tank cabin high is consistent.
Because super-container vessel side ballast tank is divided into upper and lower two-layer, therefore all need corresponding a set of piping arrangement in each layer, to complete the loading of ballast water.As upper and lower two-layer limit ballast uses simultaneously, be both identical with the operation of traditional ballast tank.If it is high to need to improve initial stability of vessel, single use upper strata ballast tank or lower floor's ballast tank cooperation can be carried out.Use the present invention that Vessel's Description is regulated flexibly convenient.
Be the super-container vessel of 18000 for certain maximum vanning amount, when this ship evenly loads 10 tons/case freight container, its side ballast tank all loads 50% cabin height ballast water navigation, its ballast water capacity about 7000 tons.For meeting proper calculation requirement, and carry out maximization container loading, its metacentric height is larger.
And consistent with above-mentioned vanning amount at this loading of guarantee, and when vessel displacement is constant, only above 7000 tons of limit ballast waters are loaded by the whole on top ballast tank of the present invention.High 50% (the d in Gao Zhanyuan cabin, above wing tank cabin
1/ d=50%) for example calculates, upper wing tank is just filled by above-mentioned ballast water capacity, and ballast-free in lower wing tank, because ballast water center of gravity has moved in upper side ballast tank, the following ballast water center of gravity of this state has about improved 7.77m.Due to the lifting of ballast water height of gravitational center, cause the rear whole ship center of gravity also corresponding raising of vanning.And two kinds of Loading conditions vanning amounts are consistent with displacement, whole ship metancenter is remained unchanged substantially, therefore the high difference high with center of gravity of the metancenter of whole ship at least reduces 0.2 meter, and both metacentric height reduced by more than 0.2 meter.
The above-mentioned model loading of same use about 2800 tons of ballast waters, being loaded in the high upper side ballast tank for overall cabin high 20% in cabin is example, and loading and computation process are with reference to upper example, and its initial stability high energy reduces by more than 0.12 meter.
And use above-mentioned model loading about 11200 tons of ballast waters, being loaded in the high upper side ballast tank for overall cabin high 80% in cabin is example, and loading and computation process are with reference to upper example, and its initial stability high energy reduces by more than 0.15 meter.
To sum up, because full ship side ballast tank loads the change of form, the reasonable reduction of metacentric height is completed.Thus, can find, the present invention can use mode cleverly to complete the high reduction of initial stability of vessel, improves boats and ships safety under sail.
Whole for super-container vessel side ballast tank is all designed to two-layer up and down by the present invention.Ship's navigation is with in use, under guarantee meets operating specification prerequisite, limit ballast water height of gravitational center is improved, both used upper strata side ballast tank to load as far as possible, effectively can reduce the gap that center of gravity is high and stability is high, thus it is high to reduce initial stability of vessel, makes the period of rolling of boats and ships, rolling initial velocity can improve, this is all improved making the safety of crewman and comfortable for living, container loading safety and sealing safety.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (2)
1. based on ten thousand casees above super-container vessel of novel ballast tank, two topsides are symmetrical arranged side ballast tank, it is characterized in that, the side ballast tank of each topside is divided into upper strata ballast tank (1) and lower floor's ballast tank (2),
Wherein, the cabin height of described upper strata ballast tank (1) be described upper strata ballast tank and described lower floor ballast tank (2) overall cabin high 20% to 80% between.
2. according to claim 1 based on ten thousand casees above super-container vessel of novel ballast tank, it is characterized in that, described boats and ships bow is to two topsides of stern, except cabin (3) position is set, it is all the double-deck ballast tank that several are made up of upper strata ballast tank (1) and lower floor's ballast tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410729824.2A CN104494793A (en) | 2014-12-03 | 2014-12-03 | 10,000 TEU-above ultra-large container ship based on novel ballast tanks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410729824.2A CN104494793A (en) | 2014-12-03 | 2014-12-03 | 10,000 TEU-above ultra-large container ship based on novel ballast tanks |
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| CN104494793A true CN104494793A (en) | 2015-04-08 |
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| CN201410729824.2A Pending CN104494793A (en) | 2014-12-03 | 2014-12-03 | 10,000 TEU-above ultra-large container ship based on novel ballast tanks |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111284631A (en) * | 2020-02-28 | 2020-06-16 | 广船国际有限公司 | Bow structure of ship and ship |
| CN114084288A (en) * | 2021-09-02 | 2022-02-25 | 中集船舶海洋工程设计研究院有限公司 | Container ship |
| CN114104203A (en) * | 2021-11-23 | 2022-03-01 | 上海海事大学 | Container stacking safety monitoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002316688A (en) * | 2001-04-19 | 2002-10-29 | Mitsui O S K Lines Ltd | Cargo ship |
| JP2005219559A (en) * | 2004-02-04 | 2005-08-18 | Ihi Marine United Inc | Cargo boat |
| KR20100048026A (en) * | 2008-10-30 | 2010-05-11 | 대우조선해양 주식회사 | Ship and its ballasting method |
| CN201932341U (en) * | 2010-12-31 | 2011-08-17 | 张连达 | Container ship without seawater ballast |
| KR20130022926A (en) * | 2011-08-26 | 2013-03-07 | 대우조선해양 주식회사 | Balasting system and floating marine structure having the system |
-
2014
- 2014-12-03 CN CN201410729824.2A patent/CN104494793A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002316688A (en) * | 2001-04-19 | 2002-10-29 | Mitsui O S K Lines Ltd | Cargo ship |
| JP2005219559A (en) * | 2004-02-04 | 2005-08-18 | Ihi Marine United Inc | Cargo boat |
| KR20100048026A (en) * | 2008-10-30 | 2010-05-11 | 대우조선해양 주식회사 | Ship and its ballasting method |
| CN201932341U (en) * | 2010-12-31 | 2011-08-17 | 张连达 | Container ship without seawater ballast |
| KR20130022926A (en) * | 2011-08-26 | 2013-03-07 | 대우조선해양 주식회사 | Balasting system and floating marine structure having the system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111284631A (en) * | 2020-02-28 | 2020-06-16 | 广船国际有限公司 | Bow structure of ship and ship |
| CN111284631B (en) * | 2020-02-28 | 2022-03-15 | 广船国际有限公司 | Bow structure of ship and ship |
| CN114084288A (en) * | 2021-09-02 | 2022-02-25 | 中集船舶海洋工程设计研究院有限公司 | Container ship |
| CN114104203A (en) * | 2021-11-23 | 2022-03-01 | 上海海事大学 | Container stacking safety monitoring method |
| CN114104203B (en) * | 2021-11-23 | 2024-06-07 | 上海海事大学 | Container stacking safety monitoring method |
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Application publication date: 20150408 |