CN105366012A - Ship undocking method - Google Patents
Ship undocking method Download PDFInfo
- Publication number
- CN105366012A CN105366012A CN201510996243.XA CN201510996243A CN105366012A CN 105366012 A CN105366012 A CN 105366012A CN 201510996243 A CN201510996243 A CN 201510996243A CN 105366012 A CN105366012 A CN 105366012A
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- Prior art keywords
- ship
- ships
- boats
- undocking
- floating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C3/00—Launching or hauling-out by landborne slipways; Slipways
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention provides a ship undocking method, belongs to the ship field, and is designed for solving problems that horizontal undocking of existing ship requires injection of a large amount of ballast water and the like. The ship undocking method comprises steps as follows: ballast water is pumped into a ballast tank of a ship, so that bow draft is smaller than stern draft, and the trim is a set value or in a set range; the ship is undocked in a trim floating state under the traction of a power device. The ship undocking method adopts trim floating, and compared with the manner that a large amount of ballast water is injected in bows of the existing ships to realize horizontal floating of the ships, the method has the advantages that ballast water required to be injected for trim floating is obviously reduced, meanwhile, the drainage and tank cleaning workload after undocking is reduced, and labor and material resource consumption as well as energy consumption for draft and drainage are greatly reduced.
Description
Technical field
The present invention relates to technical field of ships, particularly relate to a kind of ship undocking method.
Background technology
Existing ship undocks mode for add water at bow, allows boats and ships keep vertical equity drinking water floating.Large due to hull weight for large ship, need bow to load a large amount of ballast water and boats and ships could be allowed to be horizontal floading condition floating.Such as 250,000 tons of ore carriers need add water 6500 tons.Add ballast water and need at substantial manpower and materials, affect the dock cycle, draining after simultaneously undocking, the work capacity cleared the ship are also large especially.
Summary of the invention
The invention provides a kind of horizontality solving existing ship to undock and need to inject the ship undocking method of a large amount of ballast water problem.
For reaching this object, the present invention by the following technical solutions:
The invention provides a kind of ship undocking method, comprise the steps:
Step 1, in the ballast tank of boats and ships, pump into ballast water, stem is absorbed water and is less than ship aft draft, and draft difference is setting value or setting range;
Step 2, boats and ships undock with trim floating state under the traction of engine installation.
Further technical scheme is, when 0.5% captain of boats and ships is more than or equal to 1 meter, described draft difference is set smaller than or equals 1 meter; When 0.5% captain of boats and ships is less than 1 meter, described draft difference is set smaller than or equals 0.5% captain.
Further technical scheme is, described boats and ships undock with trim floating state and comprise under the traction of engine installation:
Step 201, to the water filling of dock plane, bow floating, ship stern continue supported by docking block;
Step 202, ship stern floating, boats and ships are in complete floating state;
Step 203, described boats and ships undock with trim floating state under the traction of engine installation.
Further technical scheme is, when described boats and ships are in complete floating state, the vertical dimension of ship stern distance docking block is not less than 0.5 meter.
Further technical scheme is, before step 1, also comprises: calculate or measure the weight and center of gravity that obtain boats and ships.
Further technical scheme is, before step 1, also comprises: arrange docking block and the docking block of encryption ship stern corresponding position.
Further technical scheme is, the levelness of docking block is less than ± and the absolute value of 10mm.
Beneficial effect of the present invention is:
Ship undocking method of the present invention is trim floating, add at bow the mode that a large amount of ballast water makes the horizontal floating of boats and ships relative to existing ship, trim floating needs the ballast water injected obviously to reduce, decrease draining after undocking simultaneously, work capacity when bringing down stocks, significantly reduce the energy consumption of human and material resources consumption and drinking water, draining.
Accompanying drawing explanation
The boats and ships of the ship undocking method that Fig. 1 provides for the preferred embodiment of the present invention are in the structural representation of rolling condition.
In figure:
1, boats and ships; 2, ballast water; 3, docking block.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Preferred embodiment
The present embodiment discloses a kind of ship undocking method.This ship undocking method comprises the steps:
Step 1, in the ballast tank of boats and ships 1, pump into ballast water 2, stem is absorbed water and is less than ship aft draft, and draft difference is setting value or setting range.In order to can, by the accurate prestowage ballast water 2 of setting draft difference, need to calculate or measure the weight and center of gravity that obtain boats and ships 1 before pumping into ballast water 2.
Step 2, boats and ships 1 undock with trim floating state under the traction of engine installation.
Wherein, generally be provided with the ballast tank of at least one in boats and ships 1, when pumping into ballast water 2 in 1 ballast tank of boats and ships, ballast water 2 can be pumped in one or more ballast tank, as long as can ensure that stem drinking water is less than ship aft draft, and draft difference is setting value or setting range.
The present embodiment ship undocking method is trim floating, add at bow the mode that a large amount of ballast water 2 makes the horizontal floating of boats and ships relative to existing ship, trim floating needs the ballast water 2 injected obviously to reduce, decrease draining after undocking simultaneously, work capacity when bringing down stocks, significantly reduce the energy consumption of human and material resources consumption and drinking water, draining.
Undock in order to ensure boats and ships 1 safety and steady, ship stern structure is not damaged, and the draft difference of boats and ships 1 trim floating is: when 0.5% captain of boats and ships 1 is more than or equal to 1 meter, and described draft difference is set smaller than or equals 1 meter; When 0.5% captain of boats and ships 1 is less than 1 meter, described draft difference is set smaller than or equals 0.5% captain.
Concrete, boats and ships 1 undock with trim floating state and comprise the steps: under the traction of engine installation
Step 201, to the water filling of dock plane, bow floating, ship stern continue supported by docking block 3.
Step 202, ship stern floating, boats and ships 1 are in complete floating state.Preferably, when boats and ships 1 are in complete floating state, the vertical dimension of ship stern distance docking block is not less than 0.5 meter, and bow aft draft deviation should be less than 10% of theory calculate.
Step 203, described boats and ships 1 undock with trim floating state under the traction of engine installation.
Stem floating in step 201, ship stern continues to be supported by docking block 3, and ship stern will produce larger support reaction (can reach a few kiloton) to docking block 3, in order to prevent the oppressed distortion of docking block 3 or by conquassation, arrange the docking block 3 of encryption ship stern corresponding position during docking block 3, as shown in Figure 1.Preferably, before step 1, carry out layout and the encrypted work of docking block 3.
Concrete, the boats and ships of less than 100,000 tons, cabin antetheca docking block backward can carry density and be not less than 220 tons/meter; The boats and ships of less than 200000 tons, cabin antetheca docking block backward can carry density and be not less than 300 tons/meter; The boats and ships of more than 200000 tons less than 300,000 tons, cabin antetheca docking block backward can carry density and be not less than 400 tons/meter.
Preferably, the levelness of docking block 3 is less than the ± absolute value of 10mm.
Relatively flat floating every the ship of the trim floating that the present embodiment adopts adds about 2000 tons of prestowage water less, saves a large amount of water rate spendings.Due to dock add water and harbour draining work capacity reduce, shorten in average dock and time each 2 day of harbour cycle, save a large amount of manpower and materials.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (7)
1. a ship undocking method, is characterized in that, comprises the steps:
Step 1, in the ballast tank of boats and ships (1), pump into ballast water (2), stem is absorbed water and is less than ship aft draft, and draft difference is setting value or setting range;
Step 2, described boats and ships (1) undock with trim floating state under the traction of engine installation.
2. ship undocking method according to claim 1, is characterized in that: when 0.5% captain of described boats and ships (1) is more than or equal to 1 meter, described draft difference is set smaller than or equals 1 meter; When 0.5% captain of described boats and ships (1) is less than 1 meter, described draft difference is set smaller than or equals 0.5% captain.
3. ship undocking method according to claim 1 and 2, is characterized in that: described boats and ships (1) undock with trim floating state and comprise under the traction of engine installation:
Step 201, to the water filling of dock plane, bow floating, ship stern continue supported by docking block;
Step 202, ship stern floating, boats and ships (1) are in complete floating state;
Step 203, boats and ships (1) undock with trim floating state under the traction of engine installation.
4. ship undocking method according to claim 3, is characterized in that: when described boats and ships (1) are in complete floating state, and the vertical dimension of ship stern distance docking block is not less than 0.5 meter.
5. ship undocking method according to claim 1 and 2, is characterized in that: before step 1, also comprises: calculate or measure the weight and center of gravity that obtain described boats and ships (1).
6. ship undocking method according to claim 3, is characterized in that: before step 1, also comprises: arrange docking block (3) and encrypt docking block (3) corresponding to ship stern.
7. ship undocking method according to claim 3, is characterized in that: the levelness of described docking block (3) is less than ± and the absolute value of 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996243.XA CN105366012A (en) | 2015-12-24 | 2015-12-24 | Ship undocking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996243.XA CN105366012A (en) | 2015-12-24 | 2015-12-24 | Ship undocking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105366012A true CN105366012A (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510996243.XA Pending CN105366012A (en) | 2015-12-24 | 2015-12-24 | Ship undocking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105366012A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113148065A (en) * | 2021-04-29 | 2021-07-23 | 江苏扬子三井造船有限公司 | Method for launching ship by using floating dock |
| CN113830250A (en) * | 2021-07-30 | 2021-12-24 | 福建省马尾造船股份有限公司 | Method for building multiple ships in dock and performing ship inclination test |
Citations (5)
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| JPH01122794A (en) * | 1987-11-05 | 1989-05-16 | Ishikawajima Harima Heavy Ind Co Ltd | Hydro-movable boat lifting device |
| CN101357680A (en) * | 2008-06-27 | 2009-02-04 | 沪东中华造船(集团)有限公司 | Vessel floating in dock and secondary falling positioning accurate control method |
| CN101920771A (en) * | 2010-05-14 | 2010-12-22 | 蓬莱中柏京鲁船业有限公司 | Method for undock ballasting in ship building |
| CN102303693A (en) * | 2011-06-21 | 2012-01-04 | 广东中远船务工程有限公司 | Method for controlling ship to stably move during launching process in floating dock |
| CN104229084A (en) * | 2013-06-08 | 2014-12-24 | 上海船舶运输科学研究所 | Head-tail floating tank type shipbuilding platform |
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2015
- 2015-12-24 CN CN201510996243.XA patent/CN105366012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01122794A (en) * | 1987-11-05 | 1989-05-16 | Ishikawajima Harima Heavy Ind Co Ltd | Hydro-movable boat lifting device |
| CN101357680A (en) * | 2008-06-27 | 2009-02-04 | 沪东中华造船(集团)有限公司 | Vessel floating in dock and secondary falling positioning accurate control method |
| CN101920771A (en) * | 2010-05-14 | 2010-12-22 | 蓬莱中柏京鲁船业有限公司 | Method for undock ballasting in ship building |
| CN102303693A (en) * | 2011-06-21 | 2012-01-04 | 广东中远船务工程有限公司 | Method for controlling ship to stably move during launching process in floating dock |
| CN104229084A (en) * | 2013-06-08 | 2014-12-24 | 上海船舶运输科学研究所 | Head-tail floating tank type shipbuilding platform |
Non-Patent Citations (1)
| Title |
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| 中国船舶工业集团公司等: "《船舶设计实用手册总体分册》", 31 August 2013, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113148065A (en) * | 2021-04-29 | 2021-07-23 | 江苏扬子三井造船有限公司 | Method for launching ship by using floating dock |
| CN113830250A (en) * | 2021-07-30 | 2021-12-24 | 福建省马尾造船股份有限公司 | Method for building multiple ships in dock and performing ship inclination test |
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Application publication date: 20160302 |
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