KR20150102236A - 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 provided on a lower deck of a stern portion of a hull; a sliding type hatch cover provided to an upper cargo hold adjacent to the engine room; and an LNG storage tank spaced from a hatch cover to prevent the LNG storage tank from interfering when the hatch cover is opened in the upper cargo hold adjacent to the engine room.

Description

[0001] Ship & Arrangement Method In Ship [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of a ship and a ship. More particularly, the present invention relates to an engine room in which an engine of a ship is disposed below a deck of a ship's stern, And arranging the LNG storage tank at a distance from the hatch cover so as not to interfere with the opening of the hatch cover at the upper portion of the cargo hold adjacent to the engine room.

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, an engine room provided under a deck of a hull aft part;

A sliding type hatch cover provided on an upper portion of a cargo hold adjacent to the engine room; And

And an LNG storage tank provided at an upper portion of the cargo hold adjacent to the engine room, the LNG storage tank being spaced apart from the hatch cover so as not to interfere with opening of the hatch cover.

Advantageously, the LNG storage tank may be provided in at least one of the port and starboard directions of the hatch cover.

The LNG storage tank may further include a fuel supply unit provided adjacent to the LNG storage tank at an upper portion of the cargo hold of the hull aft unit to supply LNG or BOG from the LNG storage tank to the engine room.

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, a fuel supply line for supplying the LNG or BOG from the fuel supply unit to the engine room may be further included.

Preferably, the fuel supply line may be provided on a deck of the hull or in a void on the hull side.

Preferably, the propulsion engine and the power generation engine of the ship are disposed in the engine room, and the propulsion engine may be a high pressure gas injection engine using high pressure gas compressed to 150 to 400 bar as fuel.

According to another aspect of the present invention,

An engine room in which a ship's engine is installed is disposed under a deck of a ship stern section, and a hatch cover opened / closed in a sliding manner is disposed on an upper portion of the cargo hold adjacent to the engine room,

Wherein the LNG storage tank is disposed apart from the hatch cover so as not to interfere with the opening of the hatch cover at an upper portion of the cargo hold adjacent to the engine room and a fuel supply unit for supplying LNG or BOG from the LNG storage tank to the engine room, Wherein the vessel is disposed above the deck adjacent to the LNG storage tank.

In the arrangement structure of a ship and a ship of the present invention, an engine room in which an engine of a marine vessel is provided is disposed below a deck of a ship's stern portion, and a hatch cover opened / The LNG storage tank and the fuel supply unit are disposed apart from the hatch cover so as to supply fuel of the LNG or BOG to the engine room.

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.

In addition, by providing the sliding type hatch cover and the LNG storage tank and the fuel supply portion arranged in consideration of the opening and closing of the hatch cover, opening and closing of the hatch cover at the upper portion of the cargo can be freely opened and closed, Provide an efficient deployment structure. Therefore, the present invention solves the space limitation for providing the LNG storage tank and the fuel supply unit, and can be effectively applied not only to newbuilding ships but also to modification of existing ships, so that existing ships can be operated as environmentally friendly LFS.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a ship according to an embodiment of the present invention. FIG.
Fig. 2 is a schematic view of the ship of the embodiment of Fig. 1 viewed from the top. 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 schematic cross-sectional view of a ship according to an embodiment of the present invention, and FIG. 2 is a schematic view of the ship according to an embodiment of the present invention.

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

1, an engine room ER is provided below a deck D of a ship's stern section and an upper portion of a deck D of a stern section where an engine room ER is disposed, And a hatch cover HC which is opened and closed in a sliding manner is provided on the upper portion of the cargo space C adjacent to the engine room ER of the stern section of the hull S. [

For example, the ship of the present embodiment may be a bulk hull of a single hull structure provided with a sliding type hatch cover HC which is opened and closed in the left and right direction of the hull S on the upper part of the hold C.

The LNG storage tank 100 is provided at a position spaced apart from the hatch cover HC by a distance that does not interfere with the opening of the hatch cover HC at the upper portion of the hold space C adjacent to the engine room ER in the ship of this embodiment do.

The LNG storage tank 100 may be provided at one or both of the port side and the starboard side of the hatch cover HC and may be disposed at a position adjacent to the LNG storage tank 100 at the upper portion of the cargo hold C in the stern portion of the hull S, The LNG storage tank 100 is provided with a fuel supply unit 200 to supply LNG or BOG from the LNG storage tank 100 to the engine room ER through the fuel supply unit 200. [

The fuel supply unit 200 may be provided on one side of the hatch cover HC adjacent to the LNG storage tank 100 and may be provided on both sides of the hatch cover HC in an emergency port and starboard direction .

As described above, by arranging the LNG storage tank 100 and the fuel supply unit 200 using both spaces of the hatch cover HC adjacent to the engine room ER, the spatial limitation problem in the hull S for switching to the LFS And shortens the piping length for fuel supply. By arranging the tank and the fuel supply unit 200 on the deck D by placing the hatch cover HC in a sliding type and arranging the storage tank at a position spaced apart from the position of the storage cover HC so as not to interfere with the open state of the hatch cover HC Thereby preventing deterioration of cargo operation. Therefore, this embodiment can be 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 fuel supply line SL for supplying the LNG or the BOG from the fuel supply unit 200 to the engine room ER in the ship of the present embodiment is disposed above the deck D of the hull S or on the side of the hull S, As shown in FIG. The fuel supply line SL partially or wholly has a double tube structure, and an annular space may be provided between the tubes.

The propulsion engine E1 and the power generation engine E2 are disposed in the engine room ER and the propulsion engine E1 is a high pressure gas injection engine using a high pressure gas compressed to 150 to 400 bar as fuel, Lt; / RTI >

For example, an ME-GI (Man Electric Gas Injection) engine driven by LNG as fuel may be applied to the propulsion engine E1 of the 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 NOx and SOx emissions as a propulsion engine (E1) When the ME-GI engine is applied, since the compressed gas of 150 to 400 bar is supplied as fuel, the vessel must be provided with a device for boosting and vaporizing LNG and a compression device for compressing BOG to high pressure.

The fuel supply unit 200 for supplying fuel to the engine includes a high-pressure pump for supplying LNG from the LNG storage tank 100, a vaporizer for vaporizing the LNG compressed by the high-pressure pump, a LNG storage tank 100, And a compressor for receiving and compressing BOG from the compressor. A plurality of high-pressure pumps may be provided for redundancy.

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 E2 for power generation can reduce the emission of air pollutants.

 A gas valve unit (not shown) for the propulsion engine E1 may be provided adjacent to the fuel supply part 200 at the upper part of the deck. When the propulsion engine E1 is a high-pressure engine such as the ME-GI engine, the gas pressure is 150 to 400 bar high, so that the gas supplied to the engine can be controlled even if the distance between the valve unit and the engine is far.

On the other hand, when DFDG is applied to the engine for power generation (E2), the DFDG is supplied with fuel of 3 to 15 bar, preferably 5 to 7 bar, so that the compressed LNG is decompressed by the high- The BOG can be supplied as fuel. A separate compressed fuel supply device for supplying fuel to the DFDG may be provided or the LNG storage tank 100 may be provided as a pressurized container so as to meet the required fuel pressure of the DFDG with the internal pressure of the storage tank itself. Since the gas pressure of the power generation engine E1 such as the DFDG is lower than that of the propulsion engine E1, the gas valve unit (not shown) of the power generation engine E2 must be located near the engine, preferably within 10 m, It is easy. Therefore, it is preferable to be provided on the inner side or the outer side of the engine room ER so as to be adjacent to the power generation engine E2.

Meanwhile, a plurality of generators (not shown) connected to the rotation axis of the propulsion engine E1 for generating electric current by using 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 200 using LNG as fuel while utilizing the installed devices.

As described above, in the present embodiment, the engine room ER provided with the engine of the marine vessel is disposed under the deck D of the stern section of the marine vessel S and the upper portion of the cargo space C adjacent to the engine room ER The hatch cover HC is opened and closed in a slidable manner so as to be separated from the hatch cover HC so as not to interfere when the hatch cover HC is opened from above the cargo space C adjacent to the engine room ER, A tank 100 is disposed and a fuel supply unit 200 for supplying LNG or BOG from the LNG storage tank 100 to the engine room ER is disposed above the deck D adjacent to the LNG storage tank 100 .

This arrangement of vessels enables efficient fueling while minimizing the installation of inboard piping, and optimizes the use of space and equipment.

In addition, it is possible to solve the restriction on the in-ship arrangement for providing the storage tank and the fuel supply unit, to increase the space utilization and to prevent the deterioration of the cargo operation, and it is possible to apply effectively and economically to the renovation of the existing ship as well as the new ship , The existing ship can be operated as an environmentally friendly LFS through the application of this embodiment.

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
ER: engine room
E1: Propulsion engine
E2: Engine for power generation
C: Cargo hold
HC: Hatch cover
100: LNG storage tank
200: fuel supply unit
SL: Fuel supply lines

Claims (8)

An engine room provided under the deck of the hull aft part;
A sliding type hatch cover provided on an upper portion of a cargo hold adjacent to the engine room; And
And an LNG storage tank spaced apart from the hatch cover so as not to interfere with opening of the hatch cover at an upper portion of a cargo hold adjacent to the engine room. The method according to claim 1,
Wherein the LNG storage tank is provided in at least one of a port and a starboard direction of the hatch cover. The method according to claim 1,
And a fuel supply unit provided adjacent to the LNG storage tank at an upper portion of the cargo hold of the hull aft unit for supplying LNG or BOG from the LNG storage tank to the engine room. 4. The fuel cell system according to claim 3, wherein the fuel supply unit
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. The method of claim 3,
And a fuel supply line for supplying the LNG or BOG from the fuel supply unit to the engine room. 6. The method of claim 5,
Characterized in that the fuel supply line is provided at the top of the deck of the hull or in the void of the hull side. The method according to claim 1,
The propulsion engine and the power generation engine of the ship are arranged in the engine room,
Wherein the propulsion engine is a high pressure gas injection engine using high pressure gas compressed to 150 to 400 bar as fuel. In the arrangement structure of the ship,
An engine room in which a ship's engine is installed is disposed under a deck of a ship stern section, and a hatch cover opened / closed in a sliding manner is disposed on an upper portion of the cargo hold adjacent to the engine room,
Wherein the LNG storage tank is disposed apart from the hatch cover so as not to interfere with the opening of the hatch cover at an upper portion of the cargo hold adjacent to the engine room and a fuel supply unit for supplying LNG or BOG from the LNG storage tank to the engine room, Wherein the vessel is disposed above the deck adjacent to the LNG storage tank.

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