KR20150102237A - Ship And Arrangement Method In Ship - Google Patents

Abstract

A ship and an arrangement structure of a ship are disclosed. According to the present invention, the ship comprises: a cargo hold provided to a center portion of a hull; a plurality of ballast tanks provided to a side wall of the hull of a port and a starboard of the cargo hold; and at least one LNG storage tank unit provided to a portion of the ballast tank.

Description

[0001] Ship & Arrangement Method In Ship [

More particularly, the present invention relates to an arrangement structure of a ship and a ship, and more particularly, to a ship structure in which a plurality of ballast tanks are arranged at the center of a ship, side and starboard side hulls of a cargo hold, And an arrangement structure of a ship and a ship having the LNG storage tank portion.

Recently, the consumption of liquefied gas such as Liquefied Natural Gas (LNG) and Liquefied Petroleum Gas (LPG) has been rapidly increasing worldwide.

In particular, Liquefied Natural Gas (hereinafter referred to as "LNG") is an eco-friendly fuel with little emission of air pollutants during combustion, and is increasingly used in various fields.

Liquefied natural gas (hereinafter referred to as "LNG") is a colorless transparent liquid obtained by cooling methane-based natural gas to about -162 ° C. and liquefying it. / 600. ≪ / RTI > Therefore, it is very efficient to transport liquefied LNG when transporting natural gas. For example, an LNG carrier that can transport (transport) LNG is used.

As international standards for vessels and regulatory standards for each country are becoming increasingly sophisticated, there is a growing interest in ships that are environmentally friendly and highly efficient. One of them is the DFDE engine, which can be used as fuel for natural gasification or forced vaporization of LNG (Dual Fuel Diesel Electric) have been developed and applied to ships.

LNG (LNG Fueled Ship), which uses LNG as fuel, is expected to become more active in the construction and operation of LFS by strengthening emission regulation standards of international vessels and maintaining the price stability of LNG.

The present invention proposes an arrangement structure of a ship that can be applied to the ship's newbuilding or retrofitting to enable the LNG to be used as fuel for the ship.

According to an aspect of the present invention, there is provided a cargo hold comprising:

A plurality of ballast tanks provided on a sidewall of the ship at a port side and a starboard side of the cargo hold; And

And at least one LNG storage tank portion provided at a portion of the ballast tank.

Preferably, the ballast tanks may be provided along the stern from the bow to the starboard side wall of the hull.

Preferably, the LNG storage tank portion is provided in place of the ballast tank at least one of the ballast tanks provided on the right and left side walls of the hull along the stern from the bow to the stern, and at least one LNG storage portion Tanks may be provided.

The LNG storage tank is preferably provided with an engine room disposed below the deck of the ship's stern section and provided with an engine of the ship and a fuel supply unit provided adjacent to the LNG storage tank at a lower portion of the deck, And may further include a supply section.

Preferably, the fuel supply unit includes a high-pressure pump that receives and compresses LNG from the LNG storage tank, a vaporizer that vaporizes the LNG compressed by the high-pressure pump, and a compressor that receives and compresses BOG from the LNG storage tank can do.

Preferably, the engine room is provided with a high-pressure gas injection engine using high-pressure gas compressed to 150 to 400 bar as fuel.

Preferably, the cargo holds are provided along the stern from the bow at the center of the hull to partition the hull into a plurality of spaces, and a hatch cover may be provided at the upper portion of the decks of the plurality of cargo holds.

According to another aspect of the present invention, in a ship arrangement structure,

A plurality of ballast tanks are arranged along the stern from the bow to the sidewall of the ship in the port and starboard direction of the cargo hold,

Wherein an engine room is disposed under a deck of a ship stern section and an LNG storage tank part for replacing the ballast tank with at least one of the ballast tanks and supplying fuel to the engine room is disposed. / RTI >

A ship of the present invention is characterized in that a cargo hold is disposed in the center of the ship, a plurality of ballast tanks are arranged on the side wall of the cargo hold in the starboard direction and at least one LNG storage tank portion is provided in a portion of the ballast tank, .

Considering the position of the propeller for propulsion, the engine room equipped with the engine using LNG as fuel is arranged on the aft part, and the part of the side wall ballast tank is used as the space for the LNG storage tank, can do. In addition, the vessel can be operated as an environmentally friendly LFS without significantly changing the space layout on the ship, which can be effectively applied to retrofitting existing ships.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an arrangement side cross-sectional view of a ship according to an embodiment of the present invention
Fig. 2 is a longitudinal sectional view of the ship of the embodiment shown in Fig. 1. Fig.
FIG. 3 is a cross-sectional view of a portion of the ship shown in FIG. 1 where the LNG storage tank is provided. FIG.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 is a sectional side view of a ship according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a transverse sectional view of a portion where a LNG storage tank unit 100 is provided in a ship.

The ship of the present embodiment is a Liquefied natural gas fired ship (LFS) which is supplied with propellant fuel of a ship as evaporative gas (BOG) generated from LNG or LNG, for example, an ore carrier or a bulk cargo ship bulk carrier.

1 to 3, the ship of the present embodiment is characterized in that a cargo hold H capable of loading ore, bulk cargo and the like is disposed at the center of the cargo S, S) side walls of the ballast tanks (BT).

A plurality of cargo holds H are provided along the stern from the bow to the center of the hull S of the ship to divide the hull S into a plurality of spaces and a cargo hold H is provided on the deck D of the plurality of cargo holds H, A hatch cover HC is provided which can be opened and closed so that the cargo can be loaded.

In order to control the draft of the ship, a plurality of ballast tanks BT are provided on the left and right side walls of the ship S along the stern from the bow to the stern. At this time, the LNG storage tank unit 100 is installed at a part of the ballast tanks BT, .

That is, at least one tank space of the ballast tanks BT provided on the left and right side walls of the ship S along the stern is replaced with a space where the LNG storage tank unit 100 is provided, and the LNG storage tank unit 100 At least one LNG storage tank 110 is provided. By providing the LNG storage tank unit 100 at the position of the ballast tank BT at the side wall, bunkering, that is, receiving fuel from outside can be facilitated. The LNG storage tank unit 100 may be provided on both the port side and the starboard side walls as shown in FIG. 2, or may be provided only on one side wall as shown in FIG.

Meanwhile, a bunkering connection portion that can receive fuel from the outside can be provided on the sidewall portion of the hull (S) provided with the LNG storage tank portion (100).

The LNG storage tank 110 can be installed as a stand-alone tank detachable to a ship or can be easily installed and removed by modularly mounting the LNG storage tank 110 so that the LNG storage tank 110 can be easily applied to the modification of the solid line. The LNG storage tank 110 may be further loaded on the module in an unequipped port or sea so that the LNG can be supplied to improve the fuel supplyability.

The engine room ER provided with the engine of the ship is disposed under the deck D of the ship's stern section of the present embodiment and the LNG or BOG is supplied from the LNG storage tank 110 to the engine room ER Is provided at a position adjacent to the LNG storage tank 110 at the lower portion of the deck (D).

As described above, according to the present embodiment, the LNG storage tank 110 and the fuel supply unit 200 are provided by utilizing a part of the space of the ballast tank BT provided on the sidewall of the ship S, so that the storage tank and the fuel supply unit 200 are provided Thereby solving the problem of securing the space in the hull S. Through the application of this embodiment, it is possible to eliminate or minimize the cargo loading capacity loss when switching to LFS for cargo ships.

Therefore, this embodiment is applied to a solid line of a diesel propulsion system that is currently being operated, so that it can be easily converted into an LNG propulsion vessel.

The engine room (ER) may be equipped with a propulsion engine (not shown) for propelling a high pressure gas injection engine using high pressure gas compressed to 150 to 400 bar. In addition to the propulsion engine, An engine (not shown) may also be provided.

For example, as a propulsion engine for a ship, a Man-diesel Electronically Gas Injection (ME-GI) engine driven by LNG as fuel can be applied, and a DFDG (Dual Fuel Diesel Generator) . In the engine room ER, a fuel oil tank OT for supplying fuel for ignition to the engine may be additionally provided.

The ME-GI engine is a 2-stroke high-pressure natural gas injection engine that can be used as fuel for gas and oil fuel, which is developed to reduce nitrogen oxide (NOx) and sulfur oxides (SOx) emissions. When the GI engine is applied, since the compressed gas of 150 to 400 bar is supplied as fuel, the vessel must be equipped with a device for boosting and vaporizing the LNG and a compression device for compressing the BOG to high pressure.

The fuel supply unit 200 includes a high pressure pump (not shown) that receives and compresses LNG from the LNG storage tank 110, a vaporizer (not shown) that vaporizes the LNG compressed in the high pressure pump, a LNG storage tank 110 A fuel supply line for supplying LNG or BOG from the fuel supply unit 200 to the engine room ER is provided in the hull S and a fuel A vent line V from the supply unit 200 is provided extending over the deck D.

When the ME-GI engine is used to compress LNG from 150 to 400 bar in a high-pressure pump, the compressed LNG is in a supercritical state. Therefore, vaporization in the vaporizer means supplying heat energy in accordance with the engine supply conditions.

Since the ME-GI engine can reduce the pollutant emission amount by 23% of carbon dioxide, 80% of nitrogen compound, and 95% or more of sulfur compound compared with a diesel engine of the same output, And the engine for power generation can reduce the emission of air pollutants.

On the other hand, when DFDG is applied to the power generation engine, the DFDG is supplied with fuel of 3 to 15 bar, so that the compressed LNG is depressurized by the high-pressure pump or the BOG that has been compressed only to the middle of the compressor is supplied as fuel Can be configured. A separate compressed fuel supply device for supplying fuel to the DFDG may be provided or the LNG storage tank 110 may be provided as a pressurized container so as to meet the fuel required pressure of the DFDG with the internal pressure of the storage tank itself.

In the engine room ER, a plurality of generators (not shown), such as an alternator, are connected to the rotating shaft of the engine for generating electric current by using electromagnetic induction to convert the rotational force of the engine into electric energy. Not shown) may be provided.

In the engine room (ER), a propulsion transformer (not shown) for transforming the power supplied from the switchboard (not shown) and the switchboard, a frequency converter for converting the frequency of the power through the propulsion transformer, (Not shown), a propulsion motor (not shown) driven by transformed and frequency-converted power, a reduction motor (not shown) for reducing the rotational speed of the propelling electric motor to the rotational speed of the propelling device ), And the power transmitted through the reduction gear is converted into a thrust by a propeller of a fixed pitch type to propel the ship. The engine room (ER) has AUX. Boiler can also be provided.

In the case where the existing ship is an electric propulsion type ship, the LNG storage tank unit 100 and the fuel supply unit 200 are replaced by an engine using LNG as a fuel while a part of the side wall ballast tank (BT) It is also possible to convert it into LFS.

As described above, in the ship of the present embodiment, a cargo hold H is disposed at the center of the hull S, and a plurality of ballast tanks The engine room ER is disposed below the deck D of the stern section of the hull S and the LNG that supplies fuel to the engine room ER at at least one of the ballast tanks BT, The storage tank unit 100 is disposed.

By arranging such ships, it is possible to minimize the loss of cargo loading space in the ship, to maintain the balance of the ship, to effectively secure the fuel tank space for LFS, to ensure smooth supply of fuel from the outside, It is possible to optimize the use.

This arrangement, which can solve the constraints on board layout and increase the space utilization, can be effectively and economically applied not only to newbuildings but also to modification of existing vessels, so that existing ships can be operated as environmentally friendly LFS.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is.

S: Hull
D: Deck
H: Cargo hold
HC: Hatch cover
ER: engine room
100: LNG storage tank section
110: LNG storage tank
200: fuel supply unit
OT: fuel oil tank
BT: Ballast tank

Claims (8)

A cargo hold provided at the center of the ship;
A plurality of ballast tanks provided on a sidewall of the ship at a port side and a starboard side of the cargo hold; And
And at least one LNG storage tank portion provided at a portion of the ballast tanks. The method according to claim 1,
Wherein the ballast tanks are provided on the left and right sidewalls of the hull along a stern along a stern. 3. The method of claim 2,
The LNG storage tank portion is provided in place of the ballast tank at a position of at least one of the ballast tanks provided on the right and left side walls of the hull along the stern from the bow,
Wherein at least one LNG storage tank is provided in the LNG storage tank. The method of claim 3,
An engine room disposed below the deck of the ship's stern and equipped with a ship engine; And
And a fuel supply unit provided adjacent to the LNG storage tank at a lower portion of the deck for supplying LNG or BOG from the LNG storage tank to the engine room. 5. The fuel cell system according to claim 4,
A high pressure pump for receiving and compressing LNG from the LNG storage tank;
A vaporizer for vaporizing the compressed LNG in the high-pressure pump; And
And a compressor for receiving and compressing BOG from the LNG storage tank. 6. The method of claim 5,
Wherein the engine room is provided with a high-pressure gas injection engine using high pressure gas compressed to 150 to 400 bar as fuel. The method according to claim 1,
The cargo holds are provided in plural along the stern from the bow at the center of the hull to divide the hull into a plurality of spaces,
And a hatch cover is provided at the upper portion of the decks of the plurality of cargo holds. In the arrangement structure of the ship,
A plurality of ballast tanks are arranged along the stern from the bow to the sidewall of the ship in the port and starboard direction of the cargo hold,
Wherein an engine room is disposed below a deck of a ship stern section and an LNG storage tank section for replacing the ballast tank with at least one of the ballast tanks and supplying fuel to the engine room is disposed.

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