KR20100103220A - Method for constructing ship - Google Patents

Abstract

PURPOSE: A ship construction method is provided to improve the efficiency of ship construction at a dock by waterproofing of a second ship before launching a first ship. CONSTITUTION: A ship construction method comprises steps of: constructing first and second ships on both sides of a dock(S110), waterproofing the second ship before launching the first ship(S120), filling seawater inside the dock to float the first and second ships(S130), and launching the first ship(S140).

Description

Method for constructing ship

The present invention relates to a ship construction method. More specifically, it relates to a method of building a vessel in a dock.

In general, the shipbuilding industry, which begins with the ordering of ships, is designed, built and delivered, determines the survival and success of the industry by the profitability of the business.

At this time, one of the important factors that determine the profitability is the productivity that occurs in the shipbuilding method, all shipbuilding industries are trying to improve the productivity of shipbuilding. As part of this effort, various drying methods have emerged.

In this regard, recently, ships that have been completed and partially dried ships are floated at the same time to launch the finished ships, and the partially dried ships are placed back into the dock, and so-called tandem. The method is used.

In general, the tandem method requires the partial dry ship to be in an essentially floating state in order to launch a completed ship. If the partially dry ship is not floating at the time of launching the completed ship, move the partially dry ship out of the dock using a marine crane and launch the finished ship or add another block with a different dry ship. After the ship is in a floating state, the completed ship must be launched.

In this case, when the partial dry ship is moved by using the marine crane, there is a problem of paying excessive marine crane fee, and it is necessary to postpone the launch of the completed ship until the partial dry ship becomes floating. There is a problem of delaying further processing.

In addition, during the tandem method, the partial drying ship may be partially submerged therein depending on the structure and shape. At this time, after the ship has been dried and the partially dried ship is placed in the dock so that the flooded part is not corroded by salt, the flooded part of the partially dried ship should be cleaned with fresh water.

Such a cleaning operation is a task performed before relocating the partial dry ship to the dry dock and mounting the other blocks on the partial dry ship, which delays the completion time for the partial dry ship. In addition, when the inundated portion of the partially dry ship is not cleaned cleanly, the submerged portion may cause corrosion due to salt of seawater, which has a problem of degrading the quality of the ship.

The present invention has been made to solve the above problems, an object of the present invention is to provide a ship building method that can be built quickly and efficiently a ship in the dock.

According to the present invention to achieve the above object, the step of drying the first vessel and the second vessel, respectively on one side and the other side of the dock; Watertightening the second vessel before launching the first vessel; Floating the first vessel and the second vessel by introducing seawater into the dock; And launching the first vessel.

At this time, the second vessel may be formed to be floating by the watertight treatment.

On the other hand, the second vessel may be formed to be floating before the watertight treatment.

At this time, in the watertight treatment of the second vessel, the open end formed in the second vessel may be a watertight treatment in whole or in part.

At this time, the watertight treatment is preferably achieved by fixing the waterproof plate to the open end formed in the second vessel.

At this time, the waterproof plate may be installed to be located inside the second vessel from the open end of the second vessel.

At this time, after launching the first ship, the step of seating on the upper portion of the dock with the second vessel coupled to the watertight open end of the second vessel, but waiting outside the dock. ; Welding the second vessel and the coupling block by mutual welding; And it may further comprise the step of removing the waterproof plate installed in the second vessel.

On the other hand, the waterproof plate may be installed to be located outside the second vessel from the open end of the second vessel.

At this time, after the step of moving the first vessel out of the dock, a coupling block which is engageable with the watertight open end of the second vessel but waiting outside the dock, together with the second vessel, the upper portion of the dock. Seating on; Removing the waterproof plate installed on the second vessel; And coupling the second vessel and the coupling block to each other by welding.

According to the present invention, the second ship may be watertightly treated prior to launch of the first vessel to be floated upon launch of the first vessel, thereby increasing the ship construction efficiency in the dock.

In addition, by watertightening the open end of the second ship, it is possible to prevent further work of cleaning the inside of the second ship, which may be flooded, and to prevent corrosion due to seawater inflow through the open end. Can improve the quality.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

1 is a flowchart illustrating a ship building method according to an embodiment of the present invention. 2 is a side view illustrating a state in which a first vessel and a second vessel are disposed above a dock before the first vessel is launched in the ship construction method according to an embodiment of the present invention.

In the following description of the ship construction method according to the present invention, the vessel to be preferentially constructed among the vessels constructed in the dock is defined as the first vessel, and the vessel to be constructed together with the first vessel is defined as the second vessel.

At this time, in the description of one embodiment of the present invention, it will be described on the assumption that the first vessel defined above in the ship construction method according to the present invention is a completed vessel, and the second vessel is an incomplete vessel.

In this case, the completed vessel means a launchable vessel in which a plurality of large blocks are assembled to each other by welding to form a completed form. In addition, an unfinished ship means a ship consisting of one or more large blocks but not yet completed.

However, this is exemplary, and the first ship and the second ship described in this embodiment, as well as the first ship or the second ship, may be manufactured in the dock by a ship construction method according to the spirit of the present invention. It should be understood to include all vessels.

 In more detail, referring to Figure 1, in the ship building method according to an embodiment of the present invention, the step of building the first vessel and the second vessel on the one side and the other side of the dock (S110), before launching the first vessel Water-sealing the second vessel (S120), introducing the seawater into the dock to float the first vessel and the second vessel (S130), launching the first vessel (S140), the And mounting the second vessel to the dock together with a coupling block waiting outside the dock (S150) and coupling the second vessel and the coupling block to each other (S160).

According to an embodiment of the present invention, in the step S110 of building the first ship, the large blocks constituting the first ship to be built are mounted on the dock.

In this case, referring to FIG. 2, the dock 10 in which the first vessel 30 is constructed is a dock 10 having a length longer than that of the first vessel 30. For example, the length of the dock 10 may be about 400 m, and the total length of the first vessel 30 mounted on the 400 m dock 10 may be 250 to 280 m.

As such, the plurality of large blocks for manufacturing the first vessel 30 having a smaller length than the dock 10 may have one side of the dock 10, for example, the right end of the dock 10 when viewed in FIG. 2. It is mounted so that a stern is arrange | positioned at the side. At this time, the large vessels mounted on one side of the dock 10 are joined to each other by welding, so that the first vessel 30 is dried.

On the other hand, if the stern of the first vessel 30 is installed to be located at one end of the dock 10, as shown in Figure 2, the first vessel 30 is not located on the left end side of the dock 10. Remaining space.

According to one embodiment of the invention, the second vessel 50 is built in this remaining space. At this time, for example, the total length of the remaining space may be about 120 ~ 150m.

The large blocks constituting the second vessel are mounted in such a remaining space, and the mounted large blocks are joined to each other by welding to build the second vessel. At this time, the second vessel may not necessarily consist of a plurality of large blocks but may consist of one large block.

At this time, the large block constituting the first vessel 30 and the second vessel 50 may be a mega block (approximately 1000 to 3200 ton weight) according to the mega block method, but is not limited thereto.

As described above, according to the ship building method according to an embodiment of the present invention, the first vessel 30 is constructed on one side of the dock 10, and the second vessel 50 is formed on the other side.

On the other hand, the first vessel 30 may be generally a vessel longer than the length of the second vessel 50, the length of the first vessel and the second vessel according to an embodiment of the present invention can be variously selected Can be.

The construction of the first vessel and the second vessel as described above is performed through a process of welding and assembling the blocks for the respective vessel construction. At this time, the construction of the first vessel and the construction of the second vessel may be sequentially or may be simultaneously.

The construction process and order of the first vessel and the second vessel as described above may be variously made according to the working environment and conditions of the shipyard in which the vessel is constructed. At this time, since the process of assembling the first vessel and the second vessel on the dock is outside the scope of the spirit of the present invention, a detailed description thereof will be omitted.

On the other hand, according to an embodiment of the present invention, before the launch of the first ship 30, the second vessel 30 is watertightly processed (S120). At this time, the second vessel 30 becomes floatable by watertight treatment.

In this regard, according to an embodiment of the present invention, the second vessel 50 has a form that cannot be suspended by itself before being watertightly processed. For example, as shown in FIG. 2, the second vessel 50 may be formed such that the longitudinal left end 52 is blocked by a partition and the right end is opened. At this time, the second vessel 50 has an internal structure that loses buoyancy when the seawater is introduced into the interior through the open end 54, the second vessel 50 can float by itself before watertight treatment none.

According to one embodiment of the invention, the open end 54 formed in the second vessel 50 which cannot thus float on itself is wholly or partially watertightly treated. At this time, the waterproof plate 70 may be fixed to the open end 54 of the second vessel 50.

3 is a view of the open end of the second vessel of FIG. 2 seen from the right side; Referring to FIG. 3 in more detail, the second vessel viewed through the open end is formed to have a plurality of independent sections partitioned by a plurality of longitudinal bulkheads and decks. Such independent sections are used, for example, in cargo tanks 92, ballast tanks 94, engine rooms (not shown), and the like.

The waterproof plate 70 is fixedly installed at the open end 54 of the second vessel 50 formed as described above. At this time, the waterproof plate 70 is formed to watertight the lower portion of the cargo tank 92 and a portion of the ballast tank 94. The lower part of the watertight cargo tank 92 and a part of the ballast tank 94 thus provide buoyancy to the second ship 50, so that the second ship 50 becomes floatable.

At this time, in connection with partially water-tightening the open end 54 of the second vessel 50, whether or not to partially watertight the whole of the open end or watertight one of the plurality of independent sections. In this regard, various modifications may be made in consideration of workability and efficiency.

For example, cargo tanks are more susceptible to corrosion than ballast tanks that are well coated with antifouling paints. As a result, when cargo tanks are flooded by sea water, additional work such as cleaning is required to prevent corrosion. Therefore, it is better to workability and efficiency to form the second vessel 50 by water-tightening the cargo tank rather than the ballast tank.

In addition, the watertight plate installed at the open end for watertightening the second vessel should be removed from the second vessel after the first vessel has been launched and before the second vessel is relocated to the dock to mount the remaining large blocks. Therefore, it is good to workability and efficiency to install the open end of a 2nd ship so that a 2nd ship may float by watertight processing.

However, without considering workability or efficiency, it may be possible to watertight the open end of the second ship as a whole.

Referring to FIG. 2, the waterproof plate 70 may be installed to be positioned inside the second vessel 50 from the open end 54 of the second vessel 50. In this case, referring to FIG. 3, the waterproof plate 70 for watertightening the cargo tank 92 and the ballast tank 94 is separately manufactured and installed at the open end 54 of the second vessel 50. .

4 is a view showing a modification of the installation of the waterproofing plate in the ship construction method according to an embodiment of the present invention. Referring to FIG. 4, the waterproof plate 70 may be installed to be located at an outer portion of the second vessel 50 from the open end 54 of the second vessel 50.

At this time, the waterproof plate for water-tightening the cargo tank and the ballast tank separately in Figure 3 can be made integrally fixed to the open end of the second ship.

Meanwhile, according to one embodiment of the present invention, after the second vessel is watertightly treated, the seawater is introduced into the dock to float the first vessel and the second vessel (S130). In this case, referring to FIG. 2, the water gate 12 of the dock 10 is opened to introduce seawater, and the first vessel 30, which is a completed vessel, and the second vessel, which is floatably watertight, by the introduced seawater ( 50 floats inside the dock 10.

Thereafter, the first ship is moved out of the dock to launch (S140).

5 is a view showing a state in which the second vessel and the coupling block is disposed on the dock after the launch of the first vessel in the ship construction method according to an embodiment of the present invention. Referring to FIG. 5, after launching the first vessel, a coupling block waiting outside the dock is seated on the upper portion of the dock together with the second vessel (S150).

At this time, the coupling block 80 is formed to be coupled to the watertight open end 54 of the second vessel (50). In addition, the coupling block 80 may be a megablock by a megablock method or a block in which a plurality of megablocks are combined.

The coupling block 80 floats on the outer sea of the dock in the process of launching the first ship, and after the first ship exits the dock 10, together with the second vessel 50 of the dock 10. It is seated on one side.

At this time, the coupling block 80 is seated on the dock 10 together with the second vessel 50 while maintaining the contact with the open end 54 of the second vessel 50. At this time, since the waterproof plate 70 installed at the open end 54 of the second vessel 50 is formed to be located inside the second vessel 50 from the open end 54, the waterproof plate 70 is provided. Does not cause interference with the coupling block 70.

Thereafter, the coupling parts are in contact with each other and the second vessel 50 and the coupling block 80, which are seated in the dock, are mutually welded to each other (S160). And remove the waterproof plate 70 installed in the second vessel (50).

Thereafter, other large blocks are mounted on the second vessel 50 to build the second vessel 50 into a completed vessel.

On the other hand, when the waterproof plate installed at the open end of the second ship is formed to be located on the outer side of the second ship from the open end, the waterproof plate causes interference with the coupling block when the second ship and the coupling block is coupled. Therefore, when the coupling block is seated in the dock with the second ship, the second ship and the coupling block should be seated in the dock at a predetermined interval.

After that, the waterproof plate installed in the second vessel is removed. In addition, the second vessel and the coupling block are coupled to each other by welding (S160). At this time, the coupling block is moved to contact the second ship by a crane or the like and then welded to each other.

On the other hand, in the ship construction method according to an embodiment of the present invention has been described that the second vessel does not float by itself before watertight treatment. As a variant of this, the second ship may be formed to be already floating before watertight treatment.

For example, the second vessel is closed at one end in the longitudinal direction, the other end is open, and a transverse bulkhead is formed adjacent to the open end. At this time, even if seawater enters the second ship through the open end, the second ship does not watertight the open end because the watertight space between the one end of the second ship and the transverse bulkhead provides buoyancy to the second ship. Even if you can float yourself.

The open end of the second vessel thus formed is watertightly or wholly. At this time, since the second vessel can be floated regardless of watertight treatment, it is possible to minimize corrosion caused by seawater that can flow into the second vessel through the open end and to minimize additional work such as cleaning. It is preferable to watertight the open end of the second ship.

For example, if the engine room is located on the open end side of the second ship, when seawater flows into the engine room through the open end, expensive equipment installed in the engine room as well as the engine room may be corroded or It will break down. To prevent this, the open end is watertight so that no seawater enters the engine compartment.

Although the vessel construction method according to an embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention are within the scope of the same idea. Other embodiments may be easily proposed by adding, changing, deleting, or adding components, but this will also fall within the spirit of the present invention.

1 is a flowchart illustrating a ship construction method according to an embodiment of the present invention,

2 is a side view illustrating a state in which a first vessel and a second vessel are disposed above a dock before a first vessel is launched in a ship construction method according to an embodiment of the present invention;

 3 is a view of the open end of the second vessel of FIG. 2 seen from the right side;

4 is a view showing a modification of the installation of the waterproofing plate in the ship construction method according to an embodiment of the present invention,

5 is a view showing a state in which the second vessel and the coupling block is disposed on the dock after the launch of the first vessel in the ship construction method according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10 dock 30: first vessel

50: second vessel 54: open end

70: waterproof plate 80: coupling block

Claims (9)

Drying the first vessel and the second vessel on one side and the other side of the dock, respectively; Watertightening the second vessel before launching the first vessel; Floating the first vessel and the second vessel by introducing seawater into the dock; And Shipbuilding method comprising launching the first vessel. The method of claim 1, And the second vessel is formed to be floatable by the watertight treatment. The method of claim 1, And the second vessel is formed to be floating prior to the watertight treatment. The method according to any one of claims 1 to 3, Watertightly treating the second vessel, And a watertight treatment of the open end formed on the second vessel in whole or in part. The method of claim 4, wherein And the watertight treatment is achieved by fixedly installing the waterproof plate at the open end formed in the second vessel. The method of claim 5, And the waterproof plate is installed to be located at an inner side of the second vessel from an open end of the second vessel. The method of claim 6, After launching the first vessel, Seating a coupling block coupled to the watertight open end of the second vessel and waiting outside the dock with the second vessel on top of the dock; Welding the second vessel and the coupling block by mutual welding; And And removing the waterproof plate installed on the second vessel. The method of claim 5, And the waterproof plate is installed to be located at an outer side of the second vessel from an open end of the second vessel. The method of claim 8, After launching the first vessel, Seating a coupling block coupled to the watertight open end of the second vessel and waiting outside the dock with the second vessel on top of the dock; Removing the waterproof plate installed on the second vessel; And Ship construction method comprising the step of welding by welding the second vessel and the coupling block mutually.

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