KR20150102232A - 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: an engine room where an engine of the ship is provided, disposed on a lower deck of a stern portion of a hull; and at least one LNG storage tank disposed adjacent to a bow direction of the engine room, storing LNG supplied to the engine room. The LNG storage tank is disposed in an upper portion of a double bottom structure of a cargo hold provided to the hull.

Description

[0001] Ship & Arrangement Method In Ship [

The present invention relates to an arrangement structure of a ship and a ship. More specifically, the present invention relates to an engine room in which a ship's engine is disposed below a deck of a ship's stern, And at least one LNG storage tank for storing the LNG supplied to the engine room is disposed on the upper part of the structure.

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 in-ship layout structure and a ship to which such a structure is applied, in which an LNG fuel supply and an inboard space can effectively be utilized in a ship to which an engine using an LNG as a fuel is applied.

According to an aspect of the present invention, there is provided an engine room in which an engine of a ship is disposed at a lower portion of a deck of a ship's stern; And

And at least one LNG storage tank disposed adjacent to the bow direction of the engine room for storing the LNG supplied to the engine room,

Wherein the LNG storage tank is disposed above the double bottom structure of the cargo hold provided in the hull.

Preferably, the fuel supply system further includes a fuel supply unit disposed outside the forward bulkhead of the engine room and supplying LNG or BOG from the LNG storage tank to the engine room.

Preferably, the engine room may be provided with at least one propulsion engine driven by the LNG or BOG from the fuel supply unit, and at least one power generation engine driven by the LNG or BOG from the fuel supply unit. have.

Preferably, the engine room may be provided with a gas valve unit having a housing box structure for controlling supply of the LNG or BOG from the fuel supply unit to the power generation engine.

Preferably, a vent line extending from the gas valve unit to the outside of the engine room and a vent line extending from the fuel supply unit may be integrated in a void below the deck to extend to an upper portion of the deck.

Preferably, at the top of the deck, the void is provided with an extraction fan to maintain the inside of the void at a negative pressure.

Preferably, in the engine room, the power generating engine is disposed in the stern direction, the gas valve unit is disposed in the fore-going direction, and the voids can extend from the upper portion of the deck to the forward side of the dock.

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

An engine room in which an engine of a ship is disposed is arranged under a deck of a ship stern section and at least one LNG storage tank for storing LNG supplied to the engine room is disposed adjacent to a bow direction of the engine room,

Wherein the LNG storage tank is disposed at an upper portion of a double bottom structure of a cargo hold provided in the hull.

Preferably, a fuel supply unit for supplying LNG or BOG from the LNG storage tank to the engine room may be disposed outside the forward bulkhead of the engine room.

Preferably, the engine room is provided with a propulsion engine and a power generation engine of the ship, and a gas valve unit of a housing structure for controlling supply of the LNG or BOG from the fuel supply section to the power generation engine A vent line extending from the gas valve unit to the outside of the engine room and a vent line extending from the fuel supply unit may be integrated in voids under the deck so as to extend to a dock or aft side of the deck .

The ship of the present invention is arranged such that an engine room in which a ship's engine is disposed is disposed below a deck of a ship's stern portion and an LNG supplied to an engine room is stored in an upper portion of a double bottom structure of a cargo hold adjacent to the fore- The LNG storage tank is disposed.

In this way, considering the position of the propeller for propulsion, the engine room is arranged on the stern, and the engine for power generation and the engine for power generation are provided as an engine using LNG as fuel, By arranging the LNG storage tank and the fuel supply unit so as to be adjacent to each other, the piping installation can be minimized, the fuel supply can be effectively performed, and the space and the use of the apparatus can be optimized.

Further, the gas valve unit can be installed in a housing box structure without providing a separate room in the engine room, and arranged in the engine room adjacent to the power generation engine, thereby enabling efficient engine control.

1 shows a schematic view of a ship according to an embodiment of the present invention.
Fig. 2 shows only the arrangement of the hull aft part in the ship of the embodiment shown in Fig. 1 in more detail.
Fig. 3 schematically shows a cross-sectional view of A in 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 shows a schematic shape of a ship according to an embodiment of the present invention, and FIG. 2 shows only the arrangement structure of a ship's stern portion in detail. FIG. 3 shows a cross-sectional view of A in FIG.

In the ship shown in FIG. 1, the propulsion propeller is provided in the stern direction (Stern) of the ship and the opposite direction is the bow direction (Bow).

As shown in Figs. 1 to 3, the ship of the present embodiment has an engine room ER in which a ship's engine is disposed below a deck D of a stern section of a ship S, At least one LNG storage tank T for storing the LNG supplied to the engine room ER is disposed adjacent to the LNG storage tank 10. The ship of the present embodiment includes a Liquefied natural gas Fueled Ship, for example a container ship.

The LNG storage tank T in which the LNG is stored in the ship of the present embodiment is disposed above the double bottom structure DB of the cargo hold H provided in the hull S. [ A ballast tank BT is provided to fill the lower portion of the ship with seawater or water to adjust the draft of the ship and the bottom portion of the ship can be provided with a double bottom structure DB. (T) can be placed on top of this double bottom structure (DB).

By modularizing the LNG storage tank T so as to be detachable to the ship, it is also possible to convert the solid line of the diesel propulsion system currently in operation into the LNG propulsion vessel of this embodiment. LNG storage tank (T) can be easily modularized, so it is easy to apply to remodeling of solid line due to easy installation and removal. Also, LNG storage tank (T) can be loaded on module even in port or sea where bunker- LNG can be supplied in such a way that the fuel supply performance is excellent.

The fuel supply unit 100 for supplying the LNG or BOG from the LNG storage tank T to the engine disposed in the engine room ER is disposed outside the forward bulkhead of the engine room ER, Can be shortened.

At this time, in the engine room ER, at least one propulsion engine ME driven by the LNG or BOG from the fuel supply unit 100, at least one propulsion engine ME driven by the LNG or BOG from the fuel supply unit 100, The engine GE for power generation may be provided.

For example, a ME-GI (Man Electric Gas Injection) engine driven by LNG as fuel may be applied as a propulsion engine (ME) of a ship, and a DFDG (Dual Fuel Diesel Generator) can be applied.

As a 2-stroke high-pressure natural gas injection engine that can be used as a fuel for gas and oil, which is developed to reduce emissions of NOx and SOx as a propulsion engine (ME) for ships, When the ME-GI engine is used, compressed gas of 150 to 400 bar is supplied as fuel, so that a device for boosting and vaporizing the LNG and a compression device for compressing the BOG to high pressure are provided in the fuel supply part 100 . The valve unit for the propulsion engine (ME) may be provided outside the engine room (ER) adjacent to the fuel supply part (100). If the propulsion engine (ME) is a high-pressure engine such as the ME-GI engine, the gas pressure is as high as 150 to 400 bar, so that the gas supplied to the engine can be controlled even if the distance between the valve unit and the engine is far.

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 power generation engine (GE) are provided, the emission of air pollutants can be reduced.

When the DFDG is applied, the DFDG is supplied with the fuel of 3 to 15 bar as fuel, and the housing box structure for controlling the supply of LNG or BOG from the fuel supplier 100 to the power generation engine GE The gas valve unit 200 may be provided in the engine room ER. Since the gas pressure of the power generation engine GE is lower than that of the propulsion engine ME, the gas valve unit 200 of the power generation engine GE should be located near the engine, preferably within 10 m, so that the fuel supply can be easily controlled. By arranging the gas valve unit 200 having the housing box structure without providing a separate room in the engine room ER close to the power generation engine GE, space utilization can be increased, and an effective fuel supply and engine Control can be performed.

A vent line VL is used to maintain the gas supply pressure to the power generation engine GE using the negative pressure from the gas valve unit 200 to the top of the deck D, Can be configured to be integrated into the upper part of the deck (D) through the vent line of the supply part (100) and the void below the deck.

2, in the engine room ER, the power generation engine GE is disposed in the stern direction, the gas valve unit 200 is disposed in the fore-going direction, and the gas valve unit 200 is disposed outside the engine room It is possible to extend the vent line VL and extend through the void to the side of the dwelling upper section of the deck. The end of the void is connected to a fan room (not shown) disposed on the side of the occupant's mouth and the fan room is provided with an extraction fan to keep the inside of the void at a negative pressure.

The fan room can be configured so that the integrated vent line (VL) is extended without bending to the fan room (FR) by disposing it directly above the void, where the gas valve unit (200) and the vent line of the fuel supply part have.

The vent line (VL) can be made of a double tube structure and can discharge air in an annular space formed between the tubes. In the void portion, the inner tube is formed not of a double tube structure. At this time, if the discharge port is used to keep the void portion at a negative pressure, air can be discharged from the annular space between the double pipes through the void and the fan room. Since the annular space between the two pipes is small in volume, it is difficult to apply a fan thereto. However, such a configuration makes it possible to easily discharge the air to the discharge fan provided in the fan room, There is no need to provide a separate fan.

As another example, when the power generation engine GE is disposed in the forward direction within the engine room ER and the gas valve unit 200 is disposed in the stern direction, the vent line VL is extended from the gas valve unit 200 May extend from the top of the deck (D) to the stern side of the docking station (SS).

At the end of the vent line VL on the side of the deck D, a gas discharging device 300 may be provided in the forward or aft direction of the dock SS.

On the other hand, a plurality of generators (not shown) connected to the rotating shaft of the propulsion engine ME for generating electric current by electromagnetic induction and converting the rotational force of the engine into electric energy are provided in the engine room ER, an alternator (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.

In the case where the existing watercraft is an electric propulsion type vessel, it is also possible to modify the engine and the fuel supply unit 100 using LNG as fuel while utilizing the installed devices.

As described above, according to the present embodiment, the engine room ER provided with the engine of the ship is disposed under the deck D of the stern section of the ship S and the LNG supplied to the engine room ER is stored The LNG storage tank T has a double bottom structure of the cargo hold H provided in the hull S, and the at least one LNG storage tank T is disposed adjacent to the fore- As shown in FIG.

The fuel supply unit 100 for supplying the LNG or BOG from the LNG storage tank T to the engine room ER is connected to the engine room ER to reduce the length of the piping for supplying the fuel, Directional partition wall.

A propulsion engine (ME) for a ship such as an ME-GI engine and a power generation engine GE such as a DFDG are disposed in the engine room ER and an LNG or an LNG is supplied from the fuel supply section 100 to the power generation engine GE. The gas valve unit 200 for controlling the supply of the BOG is also arranged in a housing structure without providing a separate space in the engine room ER.

The deck D is discharged from the gas valve unit 200 so that at least a part of the LNG or BOG supplied from the fuel supply unit 100 to the power generation engine GE can be discharged to maintain the supply pressure to the power generation engine GE. A vent line VL is provided at a forward or aft end side of a residence SS provided at an upper portion of the housing.

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
SS: Residential District
D: Deck
ER: engine room
H: Cargo hold
DB: Double bottom structure
BT: Ballast tank
ME: Propulsion engine
GE: Engines for power generation
T: LNG storage tank
VL: Vent line
100: fuel supply unit
200: gas valve unit
300: gas discharge device

Claims (10)

An engine room disposed below the deck of the ship's stern and equipped with a ship engine; And
And at least one LNG storage tank disposed adjacent to the bow direction of the engine room for storing the LNG supplied to the engine room,
Wherein the LNG storage tank is disposed on top of a double bottom structure of a cargo hold provided on the hull. The method according to claim 1,
Further comprising a fuel supply unit disposed outside the forward bulkhead of the engine room and supplying LNG or BOG from the LNG storage tank to the engine room. 3. The method of claim 2,
The engine room is provided with at least one propulsion engine driven by the LNG or BOG from the fuel supply section and at least one power generation engine driven by the LNG or BOG from the fuel supply section. Ship. The method of claim 3,
Wherein the engine room is provided with a gas valve unit of a housing box structure for controlling supply of the LNG or BOG from the fuel supply unit to the power generation engine. 5. The method of claim 4,
And a vent line extending from the gas valve unit to the outside of the engine room and a vent line extending from the fuel supply unit are integrated in a void below the deck to extend to an upper portion of the deck. 6. The method of claim 5,
Wherein the void at the top of the deck is provided with an extraction fan to maintain the interior of the void at a negative pressure. The method according to claim 6,
Wherein the engine for power generation in the engine compartment is disposed in the stern direction and the gas valve unit is disposed in the fork direction,
Wherein the void extends from a top of the deck to a bow side of a dwell. In the arrangement structure of the ship,
An engine room in which an engine of a ship is disposed is arranged under a deck of a ship stern section and at least one LNG storage tank for storing LNG supplied to the engine room is disposed adjacent to a bow direction of the engine room,
Wherein the LNG storage tank is disposed at an upper portion of a double bottom structure of a cargo hold provided in the hull. 9. The method of claim 8,
And a fuel supply portion for supplying LNG or BOG from the LNG storage tank to the engine room is disposed outside the forward bulkhead of the engine room. 10. The method of claim 9,
Wherein the engine room is provided with a propulsion engine and a power generation engine of the ship and a gas valve unit of a housing structure for controlling supply of the LNG or BOG from the fuel supply section to the power generation engine,
A vent line extending from the gas valve unit to the outside of the engine room and a vent line extending from the fuel supply unit are integrated in a void at a lower portion of the deck to extend to a residence zone or stern side of the upper portion of the deck. Arrangement structure of ship.

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