KR20110100822A - A method for constructing a ship having a module type cargo hold - Google Patents

Abstract

The present invention is to provide a ship construction method having a modular cargo hold that can reduce the time to install the chieftain, dismantling according to using the chief (hereinafter, permanent chief) is always installed in the cargo hold assembly factory of the ship.
The ship construction method having a modular cargo hold of the present invention comprises the step of having a permanent chief installed always in the factory for assembling the cargo hold of the ship (S100); Disposing an inner wall upper block around the permanent chief of the factory (S200); Manufacturing a cargo hold upper module by installing a barrier and a heat dissipating material on the inner wall upper block (S300); Manufacturing a cargo hold lower module by installing a barrier and a heat dissipating material on an inner wall lower block to be coupled to the upper inner wall block (S400); Merging the cargo hold upper module and the cargo hold lower module to complete a cargo hold module (S500); Mounting the cargo hold module inside the hull outer wall (S600).

Description

Shipbuilding method with modular cargo hold {A METHOD FOR CONSTRUCTING A SHIP HAVING A MODULE TYPE CARGO HOLD}

The present invention relates to a ship construction method having a modular cargo hold, and more particularly, it can be applied to shipbuilding fields such as carriers, floating structures, food production storage vessels or facilities for storing and transporting the natural gas LENG or liquid cargo. A method of building a ship having a modular cargo hold.

In general, natural gas is transported in gaseous form through onshore or offshore gas pipelines, or stored in cargo hold of a carrier in the form of liquefied natural gas (LGE). Can be transported to remote demand.

Such LENG is obtained by cooling natural gas to a cryogenic state of about -163 ° C, and its volume is reduced to about 1/600 than that of gaseous natural gas, which is very suitable for long distance transportation through sea.

The cargo hold for LENG is manufactured in one piece or combination with the hull.

Membrane type storage tanks use a membrane sheet made of stainless steel as the primary barrier, a triplex as the secondary barrier, and an insulation panel as the heat dissipation material.

In the storage tank manufacturing method using the system scaffold of the prior art, as shown in Figure 1, the hull (hull) for the inner wall (2), which is the basis of the cargo hold of the ship 1 is produced using a block method.

The system scaffold 3 in the form of a temporary scaffold is installed in the inner space of the inner wall 2 by the workers.

Thereafter, the heat dissipating material, the secondary barrier, and the primary barrier are installed on the inner wall 2 through the drying process of the sequential structure.

Thereafter, the worker dismantles the installed system scaffolding 3 and moves to the position or corresponding line for the next system scaffolding construction work.

However, the manufacturing method of the storage tank using the system scaffold of the prior art is difficult to proceed to the next drying step of the heat sink and barrier installation step, if a problem occurs in the installation of the system scaffold or a process delay occurs, the entire process is delayed Has

In addition, although a certain shortening is necessarily required, since a series of processes of the storage tank manufacturing method using the prior art system scaffolding are performed in the dock and the quay wall, the installation of the system scaffolding 3 takes about 30 days, and dismantled. And dismantling takes about 20 days, it takes dozens of days to work alone has a very inefficient construction economy.

In addition, the storage tank manufacturing method using the system scaffold of the prior art is difficult to maintain the heat insulating material and barrier construction quality constantly due to problems such as temperature, humidity control, etc. due to the nature of the heat insulating material and barrier installation in the dock and the inner wall.

In addition, the system scaffold used in the conventional storage tank manufacturing method is a temporary installation that is installed in preparation for demolition, there is a risk of a safety accident can be dismantled arbitrarily, there is a shake in the high altitude has a structural instability disadvantage.

In addition, the scaffolding system used in the conventional storage tank manufacturing method has an unstable element that can come in contact with the barrier during dismantling or dismantling can occur maintenance work.

In addition, the storage tank manufacturing method using a conventional system scaffold is required to move the vessel in the process, the installation place of the system scaffold is often changed to give a lot of inconvenience to the workers.

An object of the present invention devised to solve such a problem, by using a chief (hereinafter, permanent chief) is always installed in the factory for assembling the cargo hold of the ship by the modular cargo hold that can reduce the time to install the chieftain, dismantling. It is intended to provide a ship construction method having.

In addition, another object of the present invention is to perform the installation process of the heat insulating material and the barrier in the factory equipped with the permanent chieftain, and to perform the hull drying process in the dock or the quay, through parallel drying to proceed with the process together It is intended to provide a ship construction method having a modular cargo hold that can shorten the entire ship process, and secure a competitive edge in ship construction.

An object of the present invention described above, comprising the step of having a permanent chief is always installed in a cargo hold assembly factory of the ship; Placing an inner wall upper block around the permanent yard of the factory; Manufacturing a cargo hold upper module by installing a barrier and a heat dissipating material on the inner wall upper block; Manufacturing a cargo hold lower module by installing a barrier and a heat dissipating material on an inner wall lower block to be coupled to the inner wall upper block; Merging the cargo hold upper module and the cargo hold lower module to complete a cargo hold module; It can be achieved by a ship building method having a modular cargo hold including the step of mounting the cargo hold module inside the hull outer wall.

Further, according to the present invention, in the step of completing the cargo hold module by combining the cargo hold upper module and the cargo hold lower module, while the crane holding the cargo hold upper module, the inner wall upper block and the cargo hold lower module of the cargo hold upper module. The inner wall of the lower block of the joint between the welded portion, the joint portion can be installed barriers and heat dissipating additives.

Further, according to the present invention, in the step of mounting the cargo hold module inside the hull outer wall, a portion of the partition wall provided in the cargo hold module and the other portion of the partition wall provided on the hull outer wall may be connected to each other.

In addition, according to the present invention, the factory can maintain the inside of the factory at a temperature and humidity suitable for the construction of the barrier and heat dissipation using the air conditioning equipment.

In addition, according to the present invention, the permanent chief may be formed according to the specification of the cargo hold.

Ship construction method having a modular cargo hold of the present invention has the advantage that can solve the problem that the entire process is delayed by performing the heat insulation and barrier installation in parallel with the ship's hull drying using the permanent chief equipped in the factory. .

In addition, the method of building a ship having a modular cargo hold of the present invention, by using a factory equipped with permanent chieftain, as the time required for the installation or removal of the existing system scaffold, as it saves a lot of cost and time It is very efficient in construction economy.

In addition, the ship construction method having a modular cargo hold of the present invention is relatively easy to control the temperature and humidity, as the heat insulating material and barrier installation in the factory equipped with permanent chieftain, so that the heat insulating material and barrier construction quality is constant There is an advantage to keep it.

In addition, the ship construction method having a modular cargo hold of the present invention is provided with a permanent chief in the factory, it is possible to more thoroughly the safety management of the permanent chieftain, can be more firmly manufactured as a fixed structure rather than a hypothesis, the structure Existing safety accidents due to insolvency hypothesis can be prevented in advance, and there is an advantage that stable work can be performed because there is no shaking at high altitude.

In addition, the ship construction method having a modular cargo hold of the present invention has a convenient advantage for workers because there is no change in the working place because the heat insulating material and barrier installation work is made in the factory.

1 is a cross-sectional view for explaining a storage tank manufacturing method using a system scaffold of the prior art.
2 is a block diagram illustrating a ship construction method having a modular cargo hold according to an embodiment of the present invention.
3 to 8 are views showing each step of the ship building method shown in FIG.
FIG. 9 is a view illustrating a second inner wall upper block and a second inner wall lower block usable in the ship building method illustrated in FIG. 2.

Hereinafter, a ship construction method having a modular cargo hold according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 9.

The following specific examples are merely illustrative of the ship construction method having a modular cargo hold according to the present invention, and are not intended to limit the scope of the present invention.

2, in the present invention, the cargo hold storage tank may be composed of a double hull consisting of an inner wall and an outer wall.

The inner wall is prepared in advance by a block method, it may be divided into an inner wall upper block and an inner wall lower block.

Here, the inner wall upper block and the inner wall lower block may be formed so as to have an inner wall cross-section of the cargo hold is coupled to each other by welding.

The upper module of the cargo hold means that the barrier and the heat dissipating material are installed on the upper block of the inner wall.

The cargo hold lower module means that the barrier and the heat dissipation material are installed in the inner wall lower block.

The cargo hold module means that the cargo hold upper module and the cargo hold lower module are combined separately.

Ship construction method having a modular cargo hold of the present invention comprises the step of having a permanent chieftain in a factory (S100); Disposing an inner wall upper block around the permanent chief of the factory (S200); Manufacturing a cargo hold upper module by installing a barrier and a heat dissipating material on the inner wall upper block (S300); Manufacturing a cargo hold lower module by installing a barrier and a heat dissipating material on the inner wall lower block (S400); Merging the upper and lower modules of the cargo hold to complete the cargo hold module (S500); Comprising the step of mounting the cargo hold module inside the hull outer wall (S600).

Each step will be described in detail with reference to FIGS. 3 to 8 in parallel with FIG. 2.

As shown in FIG. 2, in the step S100 of providing a permanent chief in a factory, the permanent chief 100 and a factory 10 shown in FIG. 3 may be provided.

Referring to FIG. 3, the permanent chieftain 100 may be formed for each specification of a cargo hold to be mounted on a ship.

Permanent chieftain 100 means always installed, that is, permanently installed in the factory 10 for the cargo hold assembly of the ship.

The factory 10 is a predetermined area outside the dock, and may be installed in an area accessible to the Goliath crane or the offshore crane or the largest crane 20.

The factory 10 may be configured to be able to open or close the ceiling 11. The ceiling 11 may be manufactured in a convertible type, which may open and close a ceiling structure that may be divided into a plurality of parts by using a motor drive or hydraulic pressure, by using a ceiling sliding method or a rotation method. By forming a contact rubber rim at one end, and forming a rubber rim seating groove at the other end of the contact position, it can be configured to maintain the airtight or watertight when closing the ceiling (11).

The crane 20 may carry in, move or carry out various works through the open ceiling 11.

The permanent chief 100 may be basically composed of the chief components corresponding to the cargo hold for ships.

The permanent chieftain 100 may be manufactured to be mobile and fixed.

When the permanent chief 100 is manufactured to be mobile, a plurality of moving wheels 101 may be provided below the permanent chief 100. The movable permanent chief 100 may be moved by a self-moving means (not shown) which transmits power of a self-equipped hydraulic and electric drive motor to the moving wheel 101. The mobile permanent chief 100 may be moved by a large transporter (not shown) for a shipyard that can lift the permanent chief 100 from the ground. The lower portion of the movable permanent chief 100 may further include a stopper for temporarily maintaining a stationary state after moving the chief.

In addition, the permanent chief 100 may be manufactured in a fixed manner. Fixed permanent chiefs (not shown) may be provided with a support plate at the bottom of the fixed permanent chiefs instead of moving wheels or stoppers. Here, the support plate may be in surface contact with the ground to provide a solid support force to the stationary permanent head.

As shown in Figure 4, the crane 20 may be used in the step (S200) of placing the inner wall upper block around the permanent chief of the factory. Here, the inner wall upper block may be any one of the first inner wall upper block 211 shown in FIG. 4 and the second inner wall upper block 211a shown in FIG. 9.

For example, the first inner wall upper block 211 is a top plate for a cargo hold tank having a corresponding standard, a left and right top tilt plate formed to be inclined downward from the left and right sides of the top plate, and downward from the bottom of each of the top tilt plates. It may include a left, right side plate and a left, right lower inclined plate formed to be inclined downward inward from the bottom of each side plate.

The crane 20 carries the first inner wall upper block 211 corresponding to the upper structure of the cargo hold and may be brought into the factory 10 through the open ceiling 11.

At this time, the crane 20 lowers the first inner wall upper block 211 downward in the front or rear position of the permanent chief 100, and then the first inner wall upper block 211 and the permanent chief 100 do not interfere with each other. You can stop at a height that will not.

Subsequently, the permanent chieftain 100 enters the inner space of the first inner wall upper block 211 in that the first inner wall upper block 211 is positioned vertically above the permanent chieftain 100 or vice versa. ) May be any one of the two methods, as located at the vertical bottom of the upper block 211 on the first inner wall.

According to the first method, the crane 20 may horizontally move the first inner wall upper block 211. The crane 20 may stop horizontal movement of the first inner wall upper block 211 at a vertical upper position of the first inner wall upper block 211. Thereafter, the crane 20 may lower the first inner wall upper block 211 on the ground or a support (not shown).

According to the second method, when the crane 20 continues to lift the first inner wall upper block 211, the permanent chief 100 may move in the horizontal direction. Thereafter, the permanent chieftain 100 may be stopped when it is positioned vertically below the first inner wall upper block 211. Then, the crane 20 may lower the first inner wall upper block 211 on the ground or the support.

Thus, by using any one of the two methods, the first inner wall upper block 211 may be in a state of being in a non-contact over the periphery 100.

As illustrated in FIG. 5, in operation S300 of manufacturing a cargo hold upper module by installing a barrier and a heat dissipating material on an inner wall upper block, an operator may perform work using the permanent chieftain 100.

The worker installs the installation 212, such as the heat shield, the secondary barrier, the primary barrier to the first inner wall upper block 211, as a result, to produce the cargo hold upper module 210.

At this time, the factory 10 is closing the ceiling (11). The air conditioner (not shown) for controlling temperature and humidity, which is provided in the factory 10 in advance, may maintain the inside of the factory 10 at a temperature and humidity suitable for construction of a barrier and a heat dissipation material.

Through this, the present invention can maintain the heat insulating material and barrier construction quality more consistently than in the dock or the quay wall.

As shown in FIG. 6, the step S400 of manufacturing a cargo hold lower module by installing a barrier and a heat dissipating material on an inner wall lower block is performed at the work position 12 next to the permanent chief 100 in the factory 10. Can be.

The air conditioner can maintain the temperature and humidity suitable for the barrier and the heat dissipation construction even at the work position 12, so that the heat dissipation and the barrier construction quality can be kept constant.

The first inner wall lower block 221 may be a lower plate that is aligned between the left and right lower inclined plates of the first inner wall upper block 211 illustrated in FIG. 5.

As the worker installs the installation 222 of the heat shield, the secondary barrier, the primary barrier, etc. in the first inner wall lower block 221, the result is to produce the cargo hold lower module 220.

The working position 12 may further include a barrier and a heat dissipating additive 230 to be used for a joint portion between the first inner wall lower block 221 and the first inner wall upper block 211 of FIG. 5.

Working position 12 may be further provided with a work platform 13 for supporting the cargo hold lower module 220.

As illustrated in FIG. 7, the crane 20 may be used in the step S500 of combining the upper and lower modules of the cargo hold to complete the cargo hold module.

The crane 20 moves the cargo hold upper module 210 completed above to the vertical upper portion of the cargo hold lower module 220.

The crane 20 lowers the cargo hold upper module 210 toward the cargo hold lower module 220 so that the cargo hold upper module 210 and the cargo hold lower module 220 can be aligned with each other.

At this time, the crane 20 is in a state of holding the cargo hold upper module 210 in the state of mutual alignment.

Thereafter, the worker welds the joint between the first inner wall upper block 211 of the cargo hold upper module 210 and the first inner wall lower block 221 of the cargo hold lower module 220, and corresponds to a barrier and a heat dissipating material there. By installing the adjunct 230, the cargo hold lower module 220 and the cargo hold upper module 210 may be combined to complete the cargo hold module 200.

As shown in Figure 8, the crane 20 may also be used in the step (S600) of mounting the cargo hold module inside the hull outer wall.

Drying of the hull outer wall and installation of the aforementioned barrier and heat dissipation may be done in parallel.

That is, the present invention can be carried out in parallel to dry the hull outer wall and to install the heat dissipating material and the barrier on the inner wall.

The crane 20 moves the completed cargo hold module 200 toward the hull outer wall 300 made in advance, and then mounts the cargo hold module 200 in the hull outer wall 300. Here, the upper part of the hull outer wall 300 is open, and both sides and the bottom of the hull outer wall 300 are sealed.

In this case, the cargo hold module 200 and the hull outer wall 300 may share a portion 240 and the other portion 340 of the plurality of double hull bulkheads.

Here, each of the plurality of double hull bulkheads may be previously divided into a portion 240 and the other portion 340 to correspond to half or a predetermined ratio.

Part 240 of the double hull bulkhead may be provided in the cargo hold module 200, the other portion 340 of the double hull bulkhead is a portion 240 of the double hull bulkhead of the cargo hold module 200. ) May be provided on the hull outer wall (300).

When the operator mounts the cargo hold module 200 inside the hull outer wall 300, the operator welds and merges a portion 240 and the other portion 340 of the partition wall.

Particularly, the portion 240 of the double hull bulkhead 240 for the cargo hold module 200 is a reinforcement structure that increases the structural rigidity of the cargo hold module 200 when the cargo hold module 200 is moved and mounted by the crane 20. Can act as

Meanwhile, referring back to FIG. 4, when the first inner wall upper block 211 descends vertically downward of the permanent chieftain 100 by the crane 20, the left and right lower inclined plates of the first inner wall upper block 211. The permanent chieftain 100 may be interfered with.

In order to prevent this, as shown in FIG. 9, the present invention may have a plate configuration of a second inner wall upper block 211a and a second inner wall lower block 221a.

For example, the second inner wall upper block 211a is a top plate for a cargo hold storage tank having a corresponding standard, a left and right top tilt plate formed to be inclined outwardly downward from the left and right sides of the top plate, and downward from the bottom of each top tilt plate. It may be composed of left and right side plates extending to.

In addition, the second inner wall lower block 221a is formed of an inclined left and right lower inclined plate, and a lower plate connecting the left and right lower inclined plates to have an upper and lower narrow arrangement structure, and the second inner wall upper block 211a. It can be configured to fit between the left, right side plate of.

Here, since the maximum distance between the left and right side plates of the second inner wall upper block 211a is greater than the maximum width of the permanent chieftain 100, the second inner wall upper block 211a and the permanent chief ( There is no mutual interference between the 100).

In this case, the permanent chief 100 may be configured to be fixed, it can be simplified in operation and configuration compared to the mobile.

Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the scope of the present invention is represented by the following claims rather than the foregoing description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts are included in the scope of the present invention. Should be interpreted.

10: factory 20: crane
100: permanent chief 200: cargo hold module
210: upper module of cargo hold 211, 211a: upper block of inner wall
220: cargo lower module 221, 221a: inner wall lower block
230: additive 300: hull outer wall

Claims (5)

Providing a permanent chief installed at a factory for assembling a cargo hold of a ship at all times;
Placing an inner wall upper block around the permanent yard of the factory;
Manufacturing a cargo hold upper module by installing a barrier and a heat dissipating material on the inner wall upper block;
Manufacturing a cargo hold lower module by installing a barrier and a heat dissipating material on an inner wall lower block to be coupled to the inner wall upper block;
Merging the cargo hold upper module and the cargo hold lower module to complete a cargo hold module;
Mounting the cargo hold module inside the hull outer wall;
Shipbuilding method with modular cargo hold.
The method of claim 1,
In the step of completing the cargo hold module by merging the cargo hold upper module and the cargo hold lower module, while the crane is holding the cargo hold upper module, between the inner wall upper block of the cargo hold upper module and the inner wall lower block of the cargo hold lower module. The joint is welded, and additives corresponding to the barrier and the heat dissipating material are installed in the joint.
Shipbuilding method with modular cargo hold. The method according to claim 1 or 2,
In the step of mounting the cargo hold module inside the hull outer wall, a portion of the partition provided in the cargo hold module and the other part of the partition provided on the outer hull wall is connected to each other
Shipbuilding method with modular cargo hold.
The method of claim 1,
The factory uses an air conditioning system to maintain the inside of the factory at a temperature and humidity suitable for the construction of barriers and heat insulating materials.
Shipbuilding method with modular cargo hold.
The method of claim 1,
The permanent chief is formed according to the specification of the cargo hold
Shipbuilding method with modular cargo hold.

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