CN114787031A - Ship building process suitable for dry dock non-floating type series connection process - Google Patents
Ship building process suitable for dry dock non-floating type series connection process Download PDFInfo
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- CN114787031A CN114787031A CN202080085969.7A CN202080085969A CN114787031A CN 114787031 A CN114787031 A CN 114787031A CN 202080085969 A CN202080085969 A CN 202080085969A CN 114787031 A CN114787031 A CN 114787031A
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- dry dock
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- 238000000034 method Methods 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000013535 sea water Substances 0.000 claims abstract description 37
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000010779 crude oil Substances 0.000 claims description 13
- 239000013505 freshwater Substances 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000010612 desalination reaction Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 description 18
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000003949 liquefied natural gas Substances 0.000 description 4
- 239000007924 injection Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- 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
- B63C1/00—Dry-docking of vessels or flying-boats
- B63C1/08—Graving docks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Ship Loading And Unloading (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a ship building process suitable for a dry dock non-floating type series connection process, which comprises the following steps: a step of constructing a plurality of ship segments of the same type or different types in one row or two rows in the same dry dock, performing a part of ship engineering of the launching ship in an adjacent area of the dock header, and performing the part of ship engineering of the launching ship in an adjacent area of the dock gate; forcibly injecting water into the partial launching ship through a pump; a step of making seawater flow in by opening a dock gate of the dry dock, thereby floating the launched vessel and making the part of the launched vessel not float; a step of carrying out the floated launching ship to a bank wall outside the dock gate; a step of discharging seawater from the dry dock by closing the dock gate; and, performing the step of engineering the remaining hull sections of the partially launched vessel at the same location.
Description
Technical Field
The present invention relates to a ship building process applicable to a dry dock non-floating type tandem process, which can build a launched ship and a partial launched ship at the same time, can stably ensure that the partial launched ship does not float while maintaining the balance of the partial launched ship when the launched ship is carried out, and can prevent the influence on the launching of the launched ship by performing forced water injection to different degrees according to the building steps of the partial launched ship, when the same type or different types of ships are built in the same dry dock.
Background
It is known to construct ships in a dry dock manner in order to efficiently construct large ships, in which ship sections are constructed and the ships are floated by introducing seawater into the dry dock, thereby being carried out after being lifted to a quay wall.
In addition, a tandem process of constructing a launching vessel and a part of the launching vessel at the same time using the available space in the dry dock can be applied.
For example, in the case of applying the tandem process of a launching ship of an ultra-large container ship and a partial launching ship of an ultra-large crude oil carrier (VLCC), when seawater is introduced into a dry dock, the partial launching ship is unevenly inclined and floated toward the stern end side due to buoyancy of a cargo space region in which bulkheads are formed, and thus, when the launching ship is lifted by a tugboat, a supporter supporting the partial launching ship may be inclined due to rotation of a propeller of the tugboat, and the partial launching ship may be further inclined, so that the launching ship of the ultra-large container ship and the partial launching ship cannot be simultaneously constructed.
As a prior art for solving the problems as described above, korean registered patent publication No. 10-0796410, which is applicable to a flooding process in a conventional tandem construction process, is disclosed, including: a step of constructing ship sections in a dock through a tandem construction process; installing main shipments such as a main engine, a tail shaft, an intermediate shaft, a stern section, a lashing bridge or a hatch cover and the like in the ship to be submerged; a step of submerging the ship to the same position by naturally introducing water into the cargo ballast tank and a part of the double bottom tanks of the submerged ship when floating the submerged ship; and a step of constructing a submerged ship after towing the launched ship; construction can be completed at the same location without moving the hull by flooding the hull after loading all of the loads.
However, in the state where the main loads are mounted on the partial launching ship, the partial launching ship is submerged by naturally flowing the water flowing in to float up the launching ship into the cargo ballast tank and a part of the double bottom tank, as shown in fig. 1, the launching ship can be submerged only after all the main loads are mounted on the partial launching ship, and therefore, even in the state where the construction of the launching ship is completed, the hoisting time of the launching ship may be delayed according to the construction process of the partial launching ship, and the seawater naturally flowing into the dock may cause the partial launching ship to be submerged, so that the hull may be corroded due to the salt and the chlorine, and thus, a pre-process or a post-process for preventing the hull corrosion may be performed, and finally, the construction period may be delayed.
For this reason, there is a need for an improved tandem process that can hoist a launched vessel independently of the steps of construction of the partial launch vessel, thereby minimizing construction delays and minimizing hull corrosion caused by the submersion of the partial launch vessel.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a ship building process applicable to a dry dock non-floating tandem process, which can hoist a launched ship regardless of the building steps of the partially launched ship, thereby minimizing a delay in construction period and minimizing corrosion of a hull due to immersion of the partially launched ship.
In order to achieve the above object, the present invention provides a ship building process suitable for a dry dock non-floating tandem process, comprising: a step of constructing a plurality of ship segments of the same type or different types in one row or two rows in the same dry dock, respectively, performing part of hull engineering of the launching ship in an area adjacent to the dock header, and performing part of hull engineering of the launching ship in an area adjacent to the dock gate; forcibly injecting water into the partial launching ship through a pump; a step of allowing seawater to flow in by opening a dock gate of the dry dock, thereby floating the launched vessel and preventing the partial launched vessel from floating; a step of carrying out the floated launching ship to a bank wall outside the dock gate; a step of discharging seawater from the dry dock by closing the dock gate; and, performing the step of engineering the remaining hull sections of the partially launched vessel at the same location.
Wherein, in order to offset buoyancy of the partial launching vessel and maintain equilibrium with a center of gravity (COG), fresh water or seawater may be forcibly injected into the cargo hold of the partial launching vessel, in which the bulkhead is formed, by the pump.
In this case, when the deck room and the cabin of the partial launching ship are mounted, the water may be forcibly injected into the pair of left and right Side Crude Oil (SCO) tanks adjacent to the cabin, respectively, and when the deck room and the cabin of the partial launching ship are not mounted, the majority of the water may be forcibly injected into the pair of left and right Side Crude Oil (SCO) tanks adjacent to the cabin, respectively, and the surplus water may be forcibly injected into the pair of left and right oil sumps, respectively.
In addition, fresh water or seawater may be forcibly injected into the Side Crude Oil (SCO) tank and the oil slop tank.
In addition, when the seawater is forcibly injected, the seawater may be injected after the salinity and chlorine are removed by the seawater desalination apparatus.
In addition, the method can also comprise the following steps: and performing a hull part project of a subsequent ship at the launching ship carrying-out position.
In the present invention, it is possible to minimize the corrosion of the hull by forcibly injecting fresh water or seawater alone while preventing a part of the launched ship from floating, and to construct the same type or different types of ships in the same dry dock, it is possible not only to construct the launched ship and a part of the launched ship at the same time, but also to stably ensure that the launched ship does not float while maintaining the balance of the part of the launched ship when the launched ship is carried out, and to prevent the influence on the launching of the launched ship by performing forcible water injection to different degrees according to the construction steps of the part of the launched ship, and further to continuously construct a large-sized constructed ship while shortening the construction period by a tandem process.
Drawings
Figure 1 illustrates a prior art submersible process suitable for use in a tandem construction process.
Fig. 2 illustrates a sequence diagram of a ship building process using a dry dock non-floating tandem process to which an embodiment of the present invention is applied.
Figure 3 schematically illustrates a dry dock implementing the ship building process of figure 2 adapted to a dry dock non-floating tandem process.
Fig. 4 illustrates a stern cross-sectional structure of a partial launch vessel of the dry dock non-floating tandem process applicable shipbuilding process of fig. 2.
Figure 5 illustrates a separate engineering flow diagram for the non-floating tandem process in the dry dock of figure 3.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those having ordinary knowledge in the art to which the present invention pertains can easily practice the present invention. The present invention may be realized in various forms, and is not limited to the embodiments described herein.
Referring to fig. 2, the ship building process suitable for the dry dock non-floating tandem process according to the embodiment of the present invention generally includes a ship hull engineering and hull portion engineering performing step S110, a forced water filling step S120, a seawater inflow step S130, a ship launching removal step S140, a seawater drainage step S150, a remaining hull portion engineering performing step S160, and a subsequent ship hull portion engineering performing step S170, and it is intended to achieve continuous tandem building of ships.
Next, a ship building process using the dry dock non-floating tandem process according to an embodiment of the present invention will be described in detail with reference to fig. 2 to 5.
First, in a hull project and hull section project performing step S110, as shown in fig. 3 and 5 (a), a plurality of ship sections of the same type of ship or different types of ships are respectively constructed in one or two rows in the same dry dock, a hull project of a partial launching ship is performed in an adjacent area to a dock header (dock head), and a hull section project of a launching ship is performed in an adjacent area to a dock gate (dock gate).
The launching vessel or the partial launching vessel is not particularly limited, and may be a Large construction vessel such as a Very Large Crude oil Carrier (VLCC), a Very Large container ship, a Liquefied Natural Gas (LNG) Carrier, a Liquefied Natural Gas (LNG) power ship, or a chemical product Carrier, and may simultaneously construct a launching vessel having an Overall Length (LOA) Of about 400m and a partial launching vessel having an Overall Length Of about 120m in one or two rows in the same dry dock having a Length Of 500m or more.
For reference, the interval between the dock header and a portion of the launched vessel and the distance between the dock gate and the launched vessel need to be maintained at an interval of about 5m, and the interval between a portion of the launched vessel and the launched vessel need to be maintained at an interval of about 10 m.
Next, in the forced water filling step S120, as shown in fig. 3, water may be forcibly filled into the interior of the partially launched ship by the pump P, thereby ensuring that the bow part of the partially launched ship, i.e., the partially launched ship, is not floated by its own buoyancy when the seawater flows into the interior of the dock.
That is, in order to offset buoyancy of the partial-launching vessel at a seawater density varying according to water temperature, salinity, and water pressure and maintain balance with a center of gravity (COG), fresh water or seawater is forcibly injected into a tank (cargo tank) in which bulkheads of the partial-launching vessel are formed by a pump P, thereby securing the partial-launching vessel in place and preventing it from floating from a supporter (support) for preventing the vessel from tipping over.
Referring to fig. 4, when Deck rooms (D/H; Deck House) a and hangars (engine housing) B of the partial launching vessel are installed at the time of forced water injection, water is forcibly injected into a pair of left and right Side Crude Oil (SCO) tanks (SCO TK (P), (S)) adjacent to the hangars B, which are the bow of the partial launching vessel, and a balance with a center of gravity (COG) whose center of gravity tends to the rear end of the stern can be maintained while preventing the bow of the partial launching vessel from floating by injecting water of about 8000 tons, respectively, using a very large crude oil carrier (VLCC) as an example, thereby preventing the partial launching phenomenon due to unbalanced inclination of the front and rear portions of the stern. For example, 8000 tons of water may be injected into No.5SCO TK (P) and 7,950 tons of water may be injected into No.5SCO TK (S), thereby totaling 15,950 tons of water.
Alternatively, in the case where the deck room a and the shelter B of the partial launching ship are not mounted, since the center of gravity of the center of gravity (COG) is inclined toward the aft end to a small extent during the mounting, most of the water is forcibly injected into each of the pair of left and right Side Crude Oil (SCO) tanks adjacent to the shelter B, and the remaining water is forcibly injected into each of the pair of left and right oily water tanks (SLOP TK (P), (S)), in the case of the very large crude oil carrier ship (VLCC), it is possible to prevent the aft from floating and maintain the balance with the center of gravity (COG) having a small degree of inclination toward the aft end while injecting 7000 tons of water into each of the pair of left and right SCO tanks, and injecting 800 tons of water into each of the pair of left and right oily water tanks, thereby preventing the aft from floating. For example, 7100 tons of water was poured into No.5SCO TK (P, S), 860 tons of water was poured into SLOP TK (P), and 750 tons of water was poured into SLOP TK (S), thereby totaling 15810 tons of water.
Among them, fresh water or seawater may be forcibly injected into a Side Crude Oil (SCO) tank and a dirty oil water tank by a pump P, and in the case of forcibly injecting seawater, water may be injected after removing salt and chlorine by a seawater desalination apparatus in order to minimize corrosion of a hull due to the salt and chlorine.
For this reason, fresh water or seawater may be forcibly injected in different manners according to the construction steps of the partial launching vessel, thereby stably ensuring that it does not float in a state of maintaining the balance of the partial launching vessel and minimizing a delay in construction period because it does not have an influence on launching of the launching vessel.
For reference, the case where the pump P is installed in a dry dock is illustrated, but it is also possible to forcibly inject water by being mounted on a partially launched ship, and the oil sump is a chamber for storing a mixture of oil and seawater formed by cleaning various chambers or an oil mixture of waste oil discharged from an engine chamber, and is configured to prevent marine pollution due to oil contamination and reduce loss of cargo.
Further, in the seawater inflow step S130, as shown in (b) of fig. 5, the seawater may be flowed in by opening the dock gate of the dry dock and the launched ship may be floated, and a part of the launched ship may be maintained in a non-floated state at the original position.
Further, in the launched vessel carry-out step S140, the floated launched vessel is lifted up to the outer wall of the dock gate by the tug, as shown in fig. 3 and 5 (c).
Further, in the seawater discharging step S150, seawater is discharged from the dry dock by closing the dock gate.
Further, in the remaining hull engineering execution step S160, as shown in (d) of fig. 5, fresh water or seawater forcibly injected into the partial launching vessel is discharged, and the remaining hull engineering of the partial launching vessel is executed at the same position where it is submerged, thereby completing the construction of the launching vessel.
Further, in the subsequent ship hull engineering execution step S170, as shown in fig. 5 (d), the hull engineering of the subsequent ship is executed at the carrying-out position of the launching ship.
With this, by the above-described constitution of the ship building process to which the dry dock non-floating tandem process is applied, compared with the conventional method in which a partial launching ship loaded with main loads is immersed in naturally inflowing seawater in order to float the launching ship by an immersion process, it is possible to prevent the partial launching ship from floating while minimizing corrosion of a hull by forcibly injecting fresh water or seawater alone, and also to stably ensure that the partial launching ship does not float while maintaining the balance of the partial launching ship when carrying out the launching ship, and to prevent influence on launching of the launching ship by forcibly injecting water to different degrees according to the steps of building the partial launching ship, when building the same type or different types of ships in the same dry dock, and further, a large-sized construction ship can be continuously constructed while the construction period is shortened by a tandem process.
In the foregoing, the present invention is explained in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, and those having ordinary knowledge in the art to which the present invention pertains can realize various modifications and embodiments within the equivalent scope of the present invention. Accordingly, the true scope of the invention should be defined by the appended claims.
Claims (7)
1. A ship building process suitable for a dry dock non-floating type series process is characterized by comprising the following steps:
a step of constructing a plurality of ship segments of the same type or different types in one row or two rows in the same dry dock, respectively, performing part of hull engineering of the launching ship in an area adjacent to the dock header, and performing part of hull engineering of the launching ship in an area adjacent to the dock gate;
forcibly injecting water into the partial launching ship through a pump;
a step of allowing seawater to flow in by opening a dock gate of the dry dock, thereby floating the launched vessel and preventing the partial launched vessel from floating;
moving the floated launching ship out of the dock gate to a bank wall outside the dock gate;
a step of discharging seawater from the dry dock by closing the dock gate; and the number of the first and second groups,
the step of engineering the remaining hull part of the partially launched vessel is performed at the same location.
2. The process of claim 1, wherein the dry dock non-floating tandem process comprises:
in order to counteract the buoyancy of the partially launched vessel and maintain equilibrium with the center of gravity, fresh water or seawater is forcibly injected into the interior of the cargo hold in which the bulkheads are formed in the partially launched vessel by the pump.
3. The process of claim 2, wherein the dry dock non-floating tandem process is adapted to be used as a vessel building process, the process comprising:
and when carrying the deck room and the engine room of the partial launching ship, forcibly injecting water into a left and right pair of side crude oil tanks adjacent to the engine room.
4. The process of claim 2, wherein the dry dock non-floating tandem process is adapted to be used as a vessel building process, the process comprising:
when the deck room and the engine room of the partial launching ship are not carried, most of the water is forcibly injected into a pair of left and right crude oil tanks adjacent to the engine room, and the rest of the water is forcibly injected into a pair of left and right oil sumps.
5. The process of constructing a ship according to claim 3 or claim 4, wherein the dry dock non-floating tandem process comprises:
and forcibly injecting fresh water or seawater into the side crude oil tank and the oil sewage tank.
6. The process of claim 5, wherein the dry dock non-floating tandem process is adapted to be used as a vessel building process, the process comprising:
when the seawater is forcibly injected, the seawater is injected after the salt and chlorine are removed by the seawater desalination apparatus.
7. The process of claim 1, further comprising:
and performing a hull part project of a subsequent ship at the launching ship carrying-out position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020190174629A KR102157346B1 (en) | 2019-12-26 | 2019-12-26 | Method for shipbuilding by adapting non-floating tandem in dry dock |
| KR10-2019-0174629 | 2019-12-26 | ||
| PCT/KR2020/011740 WO2021132840A1 (en) | 2019-12-26 | 2020-09-02 | Shipbuilding method employing non-floating tandem method in dry dock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114787031A true CN114787031A (en) | 2022-07-22 |
| CN114787031B CN114787031B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202080085969.7A Active CN114787031B (en) | 2019-12-26 | 2020-09-02 | Ship construction process suitable for dry dock non-floating type serial connection process |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7341627B2 (en) |
| KR (1) | KR102157346B1 (en) |
| CN (1) | CN114787031B (en) |
| WO (1) | WO2021132840A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611367A (en) * | 2021-02-22 | 2023-01-17 | 中印恒盛(北京)贸易有限公司 | Cell type ship bearing circulating water treatment unit |
| CN113186956B (en) * | 2021-04-01 | 2022-11-29 | 中交第四航务工程局有限公司 | Construction method for floating installation of dock gate and construction method for floating deposition of dock gate |
| CN114435554B (en) * | 2022-03-17 | 2022-11-08 | 广船国际有限公司 | Semi-ship floating method |
| CN114753297B (en) * | 2022-04-11 | 2024-02-02 | 中国铁建港航局集团有限公司 | Novel dock wall connecting structure and construction method thereof |
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2019
- 2019-12-26 KR KR1020190174629A patent/KR102157346B1/en active IP Right Grant
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2020
- 2020-09-02 CN CN202080085969.7A patent/CN114787031B/en active Active
- 2020-09-02 WO PCT/KR2020/011740 patent/WO2021132840A1/en active Application Filing
- 2020-09-02 JP JP2022532583A patent/JP7341627B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114787031B (en) | 2024-03-22 |
| KR102157346B1 (en) | 2020-09-18 |
| WO2021132840A1 (en) | 2021-07-01 |
| JP7341627B2 (en) | 2023-09-11 |
| JP2023504152A (en) | 2023-02-01 |
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