CN101678875B - Ship with bottom work space for welding - Google Patents
Ship with bottom work space for welding Download PDFInfo
- Publication number
- CN101678875B CN101678875B CN2008800153315A CN200880015331A CN101678875B CN 101678875 B CN101678875 B CN 101678875B CN 2008800153315 A CN2008800153315 A CN 2008800153315A CN 200880015331 A CN200880015331 A CN 200880015331A CN 101678875 B CN101678875 B CN 101678875B
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- China
- Prior art keywords
- work space
- assembly
- boats
- ships
- bottom work
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
A ship includes hull parts constructed independently of one another. The hull parts have joint portions to be welded together and stepped portions to form a bottom work space for welding when the joint portions are welded together. The stepped portions having such a height as to ensure that the joint portions can lie above a water level when each hull part is launched into water. Further, the bottom work space has a planar ceiling surface.
Description
Technical field
The present invention relates to a kind of boats and ships that comprise sub-assembly of hull structure, sub-assembly of hull structure is built separately and is combined when building end, more specifically, the present invention relates to a kind of boats and ships that bottom work space is used in welding that have, bottom work space is formed its height that has and guarantees that sub-assembly of hull structure connecting bridge to be welded can be positioned at the horizontal surface top when under the sub-assembly of hull structure during water.
Background technology
Well-known in this area, the size of boats and ships is built much larger than typical construction structure and by complicated process.Boats and ships experience is the manufacture process that combines of a lot of different members and device wherein.At present, most of large ships are built in dock, and dock refers to the facility that is used for building or repairing boats and ships that is located at shipbuilding yard or harbour.
Dock mainly is divided into dry dock and floating dock.Dry dock is positioned at the degree of depth enough near the big marine site, and forms by ground excavation is become to have the length, width and the degree of depth that are enough to hold boats and ships.Dry dock has sidewall and the bottom surface that is formed by ferro-concrete and sheet pile.Dock gate is installed in the entrance of dry dock.Floating dock is to have the steel casing that is generally " U " shape cross-sectional plane and be provided with a plurality of water tanks.Control the buoyancy of floating dock by change the seawater amount in the water tank of being stored in.
Because the constraint of dock size, automobile is different with making, and builds as the large-scale construction structure block-by-block of boats and ships etc.In other words, the first step of shipbuilding is to prepare a large amount of independent fritter (be that 30 ten thousand ton very large crude carrier be approximately two hundred piece for gross deadweight).The fritter grouping that these are independent also fits together to produce a plurality of middle-sized mounting blocks.Afterwards, in dock, mounting blocks is assembled into boats and ships.Yet for the super large marine of increase in demand in recent years, for example heavy lift carrier and ultra-large type black products vessel are assembled and are finished piece in traditional small-sized dock in the process of whole shipbuilding and have limitation.
Fig. 1 and Fig. 2 are front elevation and the birds-eye vieies that illustrates traditional building practices, and in the drawings, left sub-assembly of hull structure and right sub-assembly of hull structure combine to build super large marine.
As from can seeing Fig. 1 and Fig. 2, left sub-assembly of hull structure is built in different docks with right sub-assembly of hull structure and is plunged into the commercial sea.Then, left sub-assembly of hull structure and right sub-assembly of hull structure combine under floating condition.This building practices makes and overcomes the constraint that the size because of dock causes become possibility in building super large marine.In addition, this building practices helps to shorten the use cycle time of dock and the frequency of utilization that improves dock, thereby has improved the capacity rating of super large marine.
In order to finish shipbuilding process, be necessary to weld the connecting bridge C1 of left sub-assembly of hull structure and right sub-assembly of hull structure.Yet water is when welding under making left sub-assembly of hull structure and right sub-assembly of hull structure, and it is following and be immersed in the seawater that the connecting bridge C1 of left sub-assembly of hull structure and right sub-assembly of hull structure is positioned partially at waterline (WL).Therefore, need in seawater, carry out for the welding job that left sub-assembly of hull structure and right sub-assembly of hull structure is linked together and carries out.
The same with the situation of ground welding, in the welding, mother metal melts by electric arc under water, and covers solder flux at the mother metal that melts.Need direct supply, cable, circuit breaker, electrode holder, earth clip and welding rod to weld under water.A cable at one end is connected to the cell negative terminal of direct supply, and another root cable at one end is connected to the plus terminal of direct supply.Cable is connected to electrode holder and earth clip at the other end by circuit breaker.
Therefore because the welding rod on the folder directly contacts with mother metal, produce temperature and be 6,000 to 10,000 ℃ welding arc with the end of melting welding rod and the part that centers on welding rod of mother metal.Under the influence of gravity, electric current, electromagnetism, gas diffusion, surface tension etc., the metal of the thawing of welding rod moves to mother metal along welding arc stream (flow).
Yet in most of the cases, welding under water shows lower welding quality.This is because produce a large amount of bubbles around the welding arc in the process of welding under water, and the hydrogen that exists in the bubble is introduced in the welded metal, thereby cracks in the sub-assembly of hull structure of welding.Except problems of welded quality, weld under water than ground welding and more be difficult to carry out, thereby caused the problem of processibility, safety and cost aspect.
Summary of the invention
Technical matters
In view of the above problems, the purpose of this invention is to provide a kind of boats and ships, this boats and ships allow above the connecting bridge of sub-assembly of hull structure being remained on during water the water surface under the independent sub-assembly of hull structure of building, and make the connecting bridge of welded hull parts above horizontal surface become possibility.
Technical scheme
According to an aspect of the present invention, a kind of boats and ships that comprise hull parts constructed independently of one another are provided, described sub-assembly of hull structure has connecting bridge and stepped portion, described connecting bridge is together to be welded, when with described connecting bridge weld together, the bottom work space that described stepped portion is formed for welding, the height that described stepped portion has guarantee when under each sub-assembly of hull structure during water described connecting bridge can be positioned at the horizontal surface top.
Description of drawings
Fig. 1 is the front elevation of the traditional building practices of diagram, and in the drawings, left sub-assembly of hull structure and right sub-assembly of hull structure combine to build boats and ships.
Fig. 2 is the birds-eye view of the traditional building practices of diagram, and in the drawings, left sub-assembly of hull structure and right sub-assembly of hull structure combine to build boats and ships.
Fig. 3 shows has the front elevation of using the boats and ships of bottom work space according to welding according to the present invention.
Fig. 4 has the birds-eye view that the boats and ships of bottom work space are used in welding as shown in Figure 3.
Preferred forms
Below, be described with an embodiment of the boats and ships of bottom work space having welding according to the present invention with reference to accompanying drawing.
The present invention is applicable to too huge and super large marine that can't build in single dock, for example, and heavy lift carrier, ultra-large type black products vessel, floating production storage unit and floating barge.Heavy lift carrier refers to the boats and ships of the hoisting crane that is equipped with big elevating capacity, and this boats and ships are designed to transport large-scale and heavy goods specially, and this goods can't transport by Conventional Ship.
Fig. 3 illustrates to have the front elevation of using the boats and ships of bottom work space according to welding according to the present invention.Fig. 4 has the birds-eye view that the boats and ships of bottom work space are used in welding as shown in Figure 3.
With reference to Fig. 3 and Fig. 4, in the following manner boats and ships of the present invention are built: independent left sub-assembly of hull structure 1 and the right sub-assembly of hull structure 2 built, then with the connecting bridge C2 weld together of left sub-assembly of hull structure 1 and right sub-assembly of hull structure 2.These boats and ships have the bottom work space 10 that forms below the connecting bridge C2 of sub-assembly of hull structure 1 and 2.Bottom work space 10 allows the welder near the bottom of weld zone C2.Owing to exist bottom work space 10, connecting bridge C2 to be welded to be positioned in waterline (WL) top.Like this, can avoid fully when being welded to connect the bottom of portion C 2, welding under water.Sub-assembly of hull structure 1 and 2 has and is suitable for building the structure that comprises heavy lift carrier, ultra-large type black products vessel, floating production storage unit and floating barge boats and ships.
As can see from Figure 3, bottom work space 10 has planar upper 10a, and this planar upper 10a allows the welder to be welded to connect the bottom of portion C 2 easily.The height H that bottom work space 10 has is even as big as guaranteeing to have the anhydrous welding space of usable height AH when sub-assembly of hull structure 1 and 2 times water.The height H of bottom work space 10 can be along with the size of shipbuilding oceangoing ship yet to be built and purposes and is changed.With reference to Fig. 4, bottom work space 10 has the length L by the length decision of connecting bridge C2, and wherein, if there is not bottom work space 10, connecting bridge C2 is welded together by welding job under water so.
In illustrated embodiment, bottom work space 10 has and is essentially trapezoidal shape of cross section.As long as guarantee to have the anhydrous welding space of usable height AH, according to the purposes of boats and ships and the desired speed of boats and ships, bottom work space 10 just can have other shape of cross section.Can overcome the transverse strength reduction that causes because of bottom work space 10 distortion by strengthening transverse girder (transverse web frame) and transcerse bulkhead.
As mentioned above, have welding according to the present invention and guaranteed when with sub-assembly of hull structure 1 and 2 weld togethers with the boats and ships of bottom work space, sub-assembly of hull structure 1 and 2 is positioned at the horizontal surface top.Like this, need not to carry out welding job under water, thereby improved welding quality and welder's safety, reduced welding cost simultaneously.
Claims (3)
1. boats and ships that comprise hull parts constructed independently of one another, described sub-assembly of hull structure has connecting bridge and stepped portion, described connecting bridge is together to be welded, when with described connecting bridge weld together, the bottom work space that described stepped portion is formed for welding, described bottom work space is formed on described connecting bridge below, the height that described stepped portion has guarantee when under each sub-assembly of hull structure during water described connecting bridge all be positioned at above the horizontal surface
Wherein said bottom work space has planar upper, and
Wherein when described connecting bridge was welded together, the height of the described horizontal surface of the planar upper of described bottom work space distance was consistent.
2. boats and ships according to claim 1, wherein, described sub-assembly of hull structure has and is suitable for building the structure that comprises heavy lift carrier, ultra-large type black products vessel, floating production storage unit or floating barge boats and ships.
3. boats and ships as claimed in claim 1, wherein, described bottom work space has trapezoidal shape of cross section in fact.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070045862 | 2007-05-11 | ||
| KR1020070045862A KR100924846B1 (en) | 2007-05-11 | 2007-05-11 | Vessel having bottom tunnel for welding |
| KR10-2007-0045862 | 2007-05-11 | ||
| PCT/KR2008/002602 WO2008140215A1 (en) | 2007-05-11 | 2008-05-08 | Ship with bottom work space for welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101678875A CN101678875A (en) | 2010-03-24 |
| CN101678875B true CN101678875B (en) | 2013-07-03 |
Family
ID=40002374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800153315A Active CN101678875B (en) | 2007-05-11 | 2008-05-08 | Ship with bottom work space for welding |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2010526706A (en) |
| KR (1) | KR100924846B1 (en) |
| CN (1) | CN101678875B (en) |
| WO (1) | WO2008140215A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010179757A (en) * | 2009-02-05 | 2010-08-19 | Sasebo Heavy Industries Co Ltd | Floating body structure and method of manufacturing the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6127793A (en) | 1984-07-19 | 1986-02-07 | Ishikawajima Harima Heavy Ind Co Ltd | Marine coupling method of structure |
| JPS61122090A (en) * | 1984-11-20 | 1986-06-10 | Mitsui Eng & Shipbuild Co Ltd | Construction method of large steel structure on the sea |
| JP2929252B2 (en) * | 1992-09-14 | 1999-08-03 | 新日本製鐵株式会社 | Construction method of large-scale floating structure |
| JPH1159571A (en) | 1997-08-22 | 1999-03-02 | Kawasaki Steel Corp | Joining method on the sea of floating unit and ship bottom part stopping unit of the floating unit |
-
2007
- 2007-05-11 KR KR1020070045862A patent/KR100924846B1/en active IP Right Grant
-
2008
- 2008-05-08 CN CN2008800153315A patent/CN101678875B/en active Active
- 2008-05-08 WO PCT/KR2008/002602 patent/WO2008140215A1/en active Application Filing
- 2008-05-08 JP JP2010507329A patent/JP2010526706A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080099943A (en) | 2008-11-14 |
| CN101678875A (en) | 2010-03-24 |
| WO2008140215A1 (en) | 2008-11-20 |
| KR100924846B1 (en) | 2009-11-02 |
| JP2010526706A (en) | 2010-08-05 |
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