CN110254611B - Semi-ship floating method - Google Patents
Semi-ship floating method Download PDFInfo
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- CN110254611B CN110254611B CN201910568974.2A CN201910568974A CN110254611B CN 110254611 B CN110254611 B CN 110254611B CN 201910568974 A CN201910568974 A CN 201910568974A CN 110254611 B CN110254611 B CN 110254611B
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- stowage
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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
- B63B71/00—Designing vessels; Predicting their performance
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Abstract
The invention discloses a semi-ship floating method, which is characterized in that before the semi-ship floats, an incomplete cabin at the section of the semi-ship is sealed by using a sealing plate to form a stowage chamber, and then stowage is added into the stowage chamber. The incomplete cabin at the section of the half ship is sealed by the sealing plate to form the stowage chamber, so that the incomplete cabin which does not have the loading condition can be set to the loading condition. And because the incomplete cabin is relatively far away from the center of the half ship body, the moment of the center of gravity of the stowage and the half ship body is relatively large, so that the requirement on the weight of the stowage is effectively reduced, and the balance adjustment of the half ship is easier and more convenient.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a half ship floating method.
Background
In the construction of ships, in order to improve the utilization of a dock, half ships and whole ships of different ships are often carried in the dock at the same time. After the whole ship is carried, water needs to enter the dock to enable the whole ship to be undocked, meanwhile, the half ship also needs to bear buoyancy caused by water entering the dock, and the half ship is prone to toppling or damaging a local structure under the combined action of the buoyancy and the gravity of the ship body. Therefore, undocking or half-ship floating stowage needs to be calculated according to the actual ship state, and because half-ship floating is sensitive to the weight gravity center of the ship, compared with the whole ship undocking, half-ship floating calculation is more difficult, the requirement on ship floating state is higher, and the requirement on vertical and horizontal movement is more strict. When the semi-ship floats, the loading needs to be added, and the floating state of the ship body is leveled. Conventional cargo objects are water, steel plates or weights.
As the half-ship hull is built, the ballast water must be filled in a relatively complete compartment that is capable of fully carrying the required amount of water. The relatively complete cargo hold or ballast tank is far away from the section of the bow or stern of the ship, when loading the ballast water, the ballast water needs to be filled into the complete cargo hold or ballast tank, and because the center of gravity of the ship body is generally close to the middle position of the ship body, namely the relatively complete cargo hold or ballast tank is close to the center position of the ship body, the moment between the ballast water and the center of the ship body is small, and a large amount of time is needed for filling more ballast water to achieve a large moment relative to the center of gravity of the ship body, so that the floating state is leveled.
In addition, the steel plate used for stowage cannot be soaked in water, and only can be placed in special environments such as a main deck and the like, the steel plate needs to be prevented from being corroded by soaking, and when the using amount is large, the operation difficulty of selecting, transporting, stacking, returning and the like of the steel plate is large.
Disclosure of Invention
The embodiment of the invention aims to: the semi-ship floating method can conveniently realize floating work of a semi-ship.
In order to achieve the purpose, the invention adopts the following technical scheme:
a semi-ship floating method is provided, before floating, an incomplete cabin at the section of a semi-ship is sealed by a sealing plate to form a stowage chamber, and then stowage is added into the stowage chamber.
The preferable technical scheme of the invention comprises the following steps:
step S100, providing the sealing plate;
step S200, installing the sealing plate to the section to seal the incomplete cabin to form the stowage chamber;
and step S300, adding the stowage into the stowage room.
As a preferred embodiment of the present invention, the step S100 includes:
step S110, determining the height of the sealing plate according to the height of the stowage chamber;
step S120, determining the width of the sealing plate according to the width of the stowage chamber;
step S130, manufacturing the sealing plate according to the height and the width of the sealing plate determined in the step S110 and the step S120.
In a preferred embodiment of the present invention, when the stowage is made of steel plate or weight, the height of the stowage compartment is not less than the draft of the half ship.
As a preferable technical solution of the present invention, when the stowage is stowage water, the height of the stowage chamber is not less than the height of the stowage water to be added and not less than the draft of the half ship.
As a preferred embodiment of the present invention, the step S200 includes:
step S210, hoisting the sealing plate to the cross section;
and S220, welding and fixing the sealing plate and the half ship.
As a preferred embodiment of the present invention, after the step S220, a reinforcing member is welded and fixed to the sealing plate.
As a preferred technical solution of the present invention, after the step S220, a tightness test is further performed on a welding seam between the sealing plate and the half ship.
As a preferable technical scheme of the invention, the butt joint seam between each part of the sealing plate is formed by welding a single surface and forming two surfaces.
In a preferred embodiment of the present invention, the corner joints of the sealing plate and the half ship are continuously welded on a single side.
The invention has the beneficial effects that: the incomplete cabin at the section of the half ship is sealed by the sealing plate to form the stowage chamber, so that the incomplete cabin which does not have the loading condition can be set to the loading condition. And because the incomplete cabin is relatively far away from the center of the half ship body, the moment of the center of gravity of the stowage and the half ship body is relatively large, so that the requirement on the weight of the stowage is effectively reduced, and the balance adjustment of the half ship is easier and more convenient. Meanwhile, the problems that the loading and adding area is close to the center of gravity of the ship body, the adding amount is large, the weight of the whole ship is overweight, the ship bottom plate support is pressed too much, the floating feasibility is seriously influenced and the like in the original scheme can be avoided.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a step diagram of a half ship floating method according to an embodiment of the invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In this embodiment, as shown in fig. 1, in the method for floating a half ship according to the present invention, before floating the half ship, the incomplete cabin at the cross section of the half ship is sealed by the sealing plate to form a stowage chamber, and then stowage is added into the stowage chamber.
The incomplete cabin at the section of the half ship is sealed by the sealing plate to form the stowage chamber, so that the incomplete cabin which does not have the loading condition can be set to the loading condition. And because the incomplete cabin is relatively far away from the center of the half ship body, the moment of the center of gravity of the stowage and the half ship body is relatively large, so that the requirement on the weight of the stowage is effectively reduced, and the balance adjustment of the half ship is easier and more convenient. Meanwhile, the problems that the loading and adding area is close to the center of gravity of the ship body, the adding amount is large, the weight of the whole ship is overweight, the ship bottom plate support is pressed too much, the floating feasibility is seriously influenced and the like in the original scheme can be avoided.
In the embodiment of the invention, the method comprises the following steps:
step S100, providing a sealing plate;
s200, mounting a sealing plate to the section to seal the incomplete cabin to form a stowage chamber;
and step S300, adding the stowage into the stowage room.
By providing the closing plate and installing the closing plate to the section of the half ship, the incomplete cabin at the section of the half ship forms a loading chamber of a closed space, so that the loading of the half ship can be additionally arranged at the section of the half ship. And the distance between the stowage and the center of gravity of the ship body is effectively increased, namely, the moment between the stowage and the center of gravity of the ship body is effectively increased, and the requirement on the stowage weight is reduced, so that the pressure born by the bottom plate of the half ship is effectively reduced, the whole weight of the half ship is reduced, and the floating operation of the half ship can be smoothly completed.
In a specific embodiment, step S100 includes:
step S110, determining the height of a sealing plate according to the height of a stowage chamber;
step S120, determining the width of the sealing plate according to the width of the stowage chamber;
and step S130, manufacturing the sealing plate according to the height and the width of the sealing plate determined in the step S110 and the step S120.
Through the height and the width of calculating the stowage chamber, and then can confirm the height and the width of required shrouding, conveniently accomplish the preparation of shrouding, to the work load that the shrouding was reformed transform when reducing the shrouding installation, improve the work efficiency of shrouding installation.
Further, when the stowage is steel plates or weights, the height of the stowage room is not less than the draught of a half ship. In other words, in the design stage of half ship floating, the gravity center of the half ship and the moment of the stowage chamber are measured in advance, the total weight of stowage is calculated, and then the draft of the half ship is calculated according to data such as the size of the half ship, so that the minimum height required by the stowage chamber is determined, water outside the half ship is prevented from entering the inside of the half ship in the floating process of the half ship, floating of the half ship is prevented from being influenced, and effective floating work of the half ship is guaranteed.
In another embodiment of the invention, when the stowage is stowage water, the height of the stowage room is not less than the height of the stowage water to be added, and not less than the draught of a half ship. The minimum requirement for the height of the stowage water in the stowage chamber, namely the height of a sealing plate of the stowage chamber, is calculated by calculating the area of the stowage chamber and the required weight of the stowage during semi-ship floating. Secondly, the height of the sealing plate also meets the draught requirement of the half ship, and water in a dock is prevented from entering the inside of the half ship in the floating process of the half ship, so that the effective floating work of the half ship is influenced.
Optionally, in the manufacturing process of shrouding, can be with the shrouding split for a plurality of parts preparation, assemble into complete shrouding again when installing the section department of half ship, the section of the incomplete cabin of realization is sealed.
In the embodiment of the present invention, step S200 includes:
step S210, hoisting the sealing plate to the section;
and S220, welding and fixing the sealing plate and the half ship.
And step S230, welding and fixing the reinforcing material on the sealing plate.
And S240, performing a tightness test on the welding seam between the sealing plate and the half ship.
The sealing plate is hoisted to the section of the half ship and is fixedly welded with the half ship, so that the stability of installation and fixation of the sealing plate can be effectively ensured; the reinforcing materials are arranged on the sealing plates, so that the structural strength of the sealing plates can be effectively enhanced, the structural stability of the sealing plates in the floating process of the half ship is ensured, and the effective floating of the half ship is ensured; after the sealing plate is installed, a tightness test is carried out on the sealing plate and the connecting welding line of the half ship, the air tightness of the stowage room formed by sealing the sealing plate can be guaranteed, water leakage from the connecting gap of the sealing plate and the half ship in the floating process of the half ship is avoided, the tightness of the stowage room is guaranteed, and then effective floating of the half ship is effectively guaranteed.
In an alternative embodiment, the reinforcement is provided on the side of the closure panel remote from the centre of gravity of the boat half.
In the embodiment of the invention, the butt joint seams among all the parts of the sealing plate are formed by single-side welding and double-side forming, and the corner joint seams of the sealing plate and the half ship are continuously welded by single-side welding. The fillet weld between the sealing plate and the half ship comprises the fillet weld of the sealing plate, the outer plate, the inner bottom, the inner shell corner, the side longitudinal girder and the middle longitudinal girder.
In a preferred embodiment of the invention the closure panels extend 50mm beyond the free edges of the outer base panel, inner base panel, stringers etc. Through setting up the shrouding and surpassing free limit 50mm such as outer bottom plate, infrabasal plate, indulge the purlin, can provide the welding operation space of shrouding and half ship, guarantee the stability of being connected between shrouding and the half ship.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. A semi-ship floating method is characterized in that before floating of a semi-ship, an incomplete cabin at the section of the semi-ship is sealed by a sealing plate to form a stowage chamber, and then stowage is added into the stowage chamber, and the method specifically comprises the following steps:
step S110, determining the height of a sealing plate according to the height of the stowage chamber;
step S120, determining the width of the sealing plate according to the width of the stowage chamber;
step S130, manufacturing the sealing plate according to the height and the width of the sealing plate determined in the step S110 and the step S120;
step S200, installing the sealing plate to the section of the half ship to seal the incomplete cabin to form the stowage chamber;
and step S300, adding the stowage into the stowage room.
2. The semi-vessel floating method according to claim 1, wherein when the stowage is a steel plate or a weight, a height of the stowage compartment is not less than a draft of the semi-vessel.
3. The semi-vessel floating method according to claim 1, wherein when the ballast is ballast water, the height of the ballast chamber is not less than the height of the ballast water to be added and not less than the draft of the semi-vessel.
4. The semi-vessel floating method according to claim 1, wherein said step S200 comprises:
step S210, hoisting the sealing plate to the cross section;
and S220, welding and fixing the sealing plate and the half ship.
5. The method of claim 4, further comprising welding a reinforcement material to the sealing plate after step S220.
6. The method for floating a semi-vessel according to claim 4, further comprising performing a tightness test on the welding seam between the sealing plate and the semi-vessel after the step S220.
7. The method for floating a half ship according to claim 1, wherein butt joints between the parts of the sealing plates are formed by single-side welding and double-side forming.
8. The method of claim 1, wherein the corner joints of the closure plates and the vessel half are continuously welded in one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910568974.2A CN110254611B (en) | 2019-06-27 | 2019-06-27 | Semi-ship floating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910568974.2A CN110254611B (en) | 2019-06-27 | 2019-06-27 | Semi-ship floating method |
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| Publication Number | Publication Date |
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| CN110254611A CN110254611A (en) | 2019-09-20 |
| CN110254611B true CN110254611B (en) | 2021-03-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103754323A (en) * | 2014-02-14 | 2014-04-30 | 南通中远川崎船舶工程有限公司 | Mid-series building method of large ship |
| KR20140068602A (en) * | 2012-11-28 | 2014-06-09 | 에스티엑스조선해양 주식회사 | Resetting Method for two half ship |
| CN109250034A (en) * | 2018-06-21 | 2019-01-22 | 招商局重工（江苏）有限公司 | A kind of half ship floating and the localization method for falling pier |
-
2019
- 2019-06-27 CN CN201910568974.2A patent/CN110254611B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| KR20140068602A (en) * | 2012-11-28 | 2014-06-09 | 에스티엑스조선해양 주식회사 | Resetting Method for two half ship |
| CN103754323A (en) * | 2014-02-14 | 2014-04-30 | 南通中远川崎船舶工程有限公司 | Mid-series building method of large ship |
| CN109250034A (en) * | 2018-06-21 | 2019-01-22 | 招商局重工（江苏）有限公司 | A kind of half ship floating and the localization method for falling pier |
Non-Patent Citations (1)
| Title |
|---|
| 3600吨起重船半船漂浮方案分析;牛志永;《中国高新科技》;20170731;第1卷(第1期);第79-81页 * |
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