KR20110041941A - Floating structure with a propulsion system using heterogeneous fuel - Google Patents

Abstract

PURPOSE: A floating structure having a propulsion system using different types of fuel is provided to enable efficient fuel supply by a machine room formed on the upper portion of a fuel tank for the arrangement of equipment to supply fuel to a propulsion system using different types. CONSTITUTION: A floating structure having a propulsion system using different types of fuel comprises a cabin section(102), a fuel tank(104), and a fuel supply pipe. The cabin section is positioned at the center of the floating structure on the upper deck of the floating structure. The fuel tank is installed below the cabin section inside a hull of the floating structure. The fuel supply pipe is extended along the lower part or the side of the hull of the structure in order to supply fuel stored in the fuel tank to the propulsion system using different types of fuel.

Description

FLOATING STRUCTURE WITH A PROPULSION SYSTEM USING HETEROGENEOUS FUEL}

The present invention relates to a floating structure having a heterogeneous fuel propulsion system, and more particularly, devices for supplying fuel to a heterogeneous fuel propulsion system are arranged in a machine room located above the fuel tank to enable efficient fuel supply. A floating structure having a fuel propulsion system is disclosed.

In general, various vessels such as bulk cargo ships, container ships and passenger ships employ a fuel supply system that uses heavy oil (HFO) (or MDO) such as bunker C oil, which is a liquid fuel, as a propellant fuel.

In the case of burning heavy oil used as fuel in such a conventional fuel supply system, there is a problem that environmental pollution due to various harmful substances contained in the exhaust gas is serious. As the demand for environmental pollution is gradually strengthened around the world, regulations on propulsion systems using heavy oil as fuel oil are also being tightened, and the cost of satisfying such regulations is gradually increasing.

In addition, when oil prices rise due to depletion of fossil fuel or local instability, there are a number of operational problems, such as fuel costs of ships using heavy oil as fuel.

Therefore, as fuel oil of various ships, clean fuel such as LNG (or LPG, CNG, DME, etc.), which is a liquefied or gaseous gas fuel, is used instead of using heavy oil (or MDO) or using only a minimum amount. If the price of heavy oil (or MDO) is high or the environmental protection standard is high, LNG (or LPG, CNG, DME, etc.) is mainly used as fuel, and the price of heavy oil (or MDO) is low or environmental standard. In this low case, research on fuel supply systems that can mainly use heavy oil (or MDO) needs to be continued.

The present invention for solving these problems, the upper part of the fuel tank for storing the liquefied gas to be used as fuel, by providing a machine room in which devices for supplying fuel to the heterogeneous fuel propulsion system is arranged to enable efficient fuel supply It is to provide a floating structure with a heterogeneous fuel propulsion system.

According to an aspect of the present invention for achieving the above object, a floating structure having a heterogeneous fuel propulsion system and used floating in the sea, the cabin located in the center of the floating structure on the upper deck of the floating structure A section; A fuel tank installed below the cabin area in the hull of the floating structure; A fuel supply pipe extending along a lower portion or side of the hull of the floating structure to supply fuel stored in the fuel tank to the heterogeneous fuel propulsion system; It is provided with a floating structure having a heterogeneous fuel propulsion system comprising a.

The fuel supply lower pipe extending along the lower portion of the hull for fuel supply preferably extends through the space between the fuel tank and the bottom of the hull.

The fuel supply side pipe extending along the side of the hull for fuel supply preferably extends through a passage formed above the ballast tanks on the left and right sides of the hull.

The floating structure preferably further comprises a machine room located between the cabin compartment and the fuel tank to process the fuel stored in the fuel tank prior to supplying the heterogeneous fuel propulsion system.

The floating structure further includes a transfer pipe connecting the lower portion of the fuel tank and the machine room, wherein the fuel supply pipe connects the machine room and the heterogeneous fuel propulsion system.

The transfer pipe preferably has a transfer pump for supplying the fuel discharged from the lower portion of the fuel tank to the machine room located above the fuel tank.

At least one fuel tank may be installed, and the fuel supply pipe may be installed in the same number as the number of installation of the fuel tank.

A plurality of fuel tanks are installed, and the fuel supply pipe is preferably configured such that a plurality of auxiliary pipes extending from each of the fuel tanks are combined into one main pipe.

The fuel stored in the fuel tank is liquefied gas, and the machine room is provided with at least one of a recondenser, a pump, a cooler, a vaporizer, and an evaporative gas compressor for processing the liquefied gas for use in the heterogeneous fuel propulsion system. It is preferable.

The heterogeneous fuel propulsion system may be a low pressure gas injection engine or a high pressure gas injection engine. The heterogeneous fuel propulsion system may also be a gas turbine.

The floating structure preferably further includes a fuel tank for liquid fuel storing at least one of heavy oil and diesel oil as fuel.

The fuel tank is preferably removable from the hull.

The fuel tank is preferably an independent tank capable of storing liquefied gas.

The floating structure, it is preferable to further include a space for loading the cargo on at least one of the inside of the hull and the upper deck.

The floating structure is preferably a vessel capable of sailing by magnetic force by the heterogeneous fuel propulsion system, the vessel is preferably a container ship.

In addition, according to another aspect of the present invention, a floating structure that is used while floating in the sea, a fuel tank for gas fuel installed inside the hull of the floating structure; An energy generator for generating energy by receiving fuel stored in the gas fuel tank; A fuel supply pipe extending along the lower side or the side of the hull of the floating structure to supply fuel from the fuel tank for gas fuel positioned on the bower side of the energy generator to the energy generator; There is provided a floating structure comprising a.

It is preferable that the cabin compartment and the cargo loading space are arranged above the upper deck of the floating structure.

In addition, according to another aspect of the present invention, a ship having a high-pressure gas injection engine and used floating on the sea, the cabin area located on the upper deck of the vessel than the high-pressure gas injection engine on the bow side; A fuel tank installed under the cabin area in the hull of the ship; A fuel supply pipe extending along the lower or side of the ship's hull to supply fuel stored in the fuel tank to the heterogeneous fuel propulsion system; There is provided a ship comprising a.

According to the present invention as described above, there is provided a floating structure having a heterogeneous fuel propulsion system, provided in an upper part of a fuel tank for storing liquefied gas to be used as fuel in a machine room in which devices for supplying fuel to the heterogeneous fuel propulsion system are arranged. Is provided.

Accordingly, according to the floating structure of the present invention, an efficient fuel supply for the heterogeneous fuel propulsion system is possible.

Hereinafter, a floating structure having a heterogeneous fuel propulsion system according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1-4 show schematic side views of various embodiments of a floating structure having a heterogeneous fuel propulsion system.

As shown in FIG. 1, a floating structure having a heterogeneous fuel propulsion system includes a plurality of fuel tanks 3 and 4 for storing fuel in the hull 1, and the fuel tanks 3 and 4. It includes a propulsion device (5) for generating a propulsion force by the fuel delivered from.

The heterogeneous fuel propulsion system includes a plurality of the fuel tanks 3 and 4 and the propulsion device 5 described above, and pipes for supplying the respective fuels contained in the fuel tanks 3 and 4 to the propulsion device 5. It can be configured to include.

In the present specification, the floating structure is a concept including all kinds of vessels such as bulk cargo ships, container ships, passenger ships, and the like, and an offshore plant such as oil FPSO, which is usually used while mooring at one point of the sea.

As shown in the figure, when the floating structure is a bulk cargo ship, a liquid cargo carrier, etc., in addition to the fuel tanks (3, 4) may include one or more storage tanks 7 that can store the cargo. These storage tanks 7 may contain a cargo that can be used as fuel, but it should be noted that in this case they are treated as cargo rather than fuel and therefore different from the fuel stored in the fuel tank herein. do.

According to the present embodiment, some of the fuel tanks 3, 4 (i.e., the fuel tank 3 for liquid fuel) generally include heavy oil (HFO), diesel oil (MDO), or the like, which are widely used as fuel for propulsion equipment. The liquid fuel of the can be stored, the remaining fuel tank (that is, the fuel tank for gas fuel 4) may be stored any one of the gas fuel, such as LPG, LNG, DME, CNG.

In the present specification, the expressions of liquid fuel and gas fuel are determined depending on whether the state when supplied to the propulsion device, that is, the engine, is liquid or gas. That is, fuel such as heavy fuel oil or diesel oil that maintains the liquid state when supplied to the propulsion unit is called liquid fuel, and LNG which is supplied in the gas state when supplied to the propulsion unit in the liquid state or the gas state when stored in the fuel tank. Fuels such as LPG, DME, and CNG are called gas fuels.

In general, it is preferable to use fuel gas containing hydrocarbon components such as LNG, LPG and CNG as fuel other than heavy oil.

LNG, or Liquefied Natural Gas, is a liquefied natural gas collected from a gas field, with methane as the main component. When LNG is liquefied by lowering the temperature or applying pressure, the volume is reduced to about 1/600, which is advantageous in terms of space efficiency.However, the boiling point is about 162 degrees below zero. Should be kept as

LPG, or liquefied petroleum gas, has a relatively low pressure (6) for heavy hydrocarbons (two or more carbon atoms) from crude oil or crude oil refinery, or heavy hydrocarbons from natural gas. ~ 7 kg / ㎠) was added to cool and liquefy. When liquefied, the volume is reduced to approximately 1/250, which is convenient for storage and transportation. The main components are propane and butane, and may contain small amounts of ethane, propylene, butylene, and the like.

CNG, or Compressed Natural Gas, is about 200 atmospheres compressed for use as fuel.

DME, or dimethyl ether, is a kind of ether, which is less flammable and nontoxic than LPG, and has a high oxygen content, so it does not generate soot during combustion and thus has less environmental load.

Each fuel tank 3, 4 comprises an appropriate level of insulation and sealing system depending on the type of fuel to be accommodated. In particular, the fuel tank containing the liquefied gas, such as LNG, LPG may be used a membrane type or a stand-alone tank used in the liquefied gas storage tank field.

In FIG. 1, the fuel tank 3 for liquid fuel and the fuel tank 4 for gas fuel (eg, LNG, LPG, DME, CNG, etc.) are all illustrated as being installed inside the hull 1 of the floating structure. 2, the fuel tank 3 for liquid fuel is installed inside the hull 1 of the floating structure and the fuel tank 4 for gas fuel can be modified to be installed on the deck of the floating structure. have. In addition, the fuel tank for gas fuel 4 is installed inside the hull 1 of the floating structure and the fuel tank for liquid fuel 3 can be modified to be installed on the deck of the floating structure, of course.

On the other hand, as the propulsion device 5, a low pressure gas injection engine such as Dual Fuel Disel Electric (DFDE), for example, a high pressure gas injection engine such as ME-GI (Gas Injection engine of Man B & W), and a gas turbine, etc. Of course, as long as two or more different fuels can be used as fuel, other propulsion devices can be used.

In the present specification, the expression "you can use two or more heterogeneous fuels" means that two or more different fuels can be used at the same time, and that two or more different fuels can be used. The concept includes all the means that fuel can be selectively used as needed.

3 illustrates a method of additionally installing a fuel tank 4 for gas fuel, such as LNG, in a floating structure designed and constructed to have only one fuel tank 3 for liquid fuel, for example. The drawings are illustrated.

According to the method illustrated in FIG. 3, the hull of the floating structure is cut at an arbitrary position and separated into two parts, namely, the bow portion 1a and the stern portion 1b, and these bow portions 1a and the stern portion 1b. The additional hull portion 1c in which the fuel tank 4 is embedded is inserted between the two and integrated into one hull by welding or the like.

Meanwhile, according to the present invention, in addition to the method of additionally installing the fuel tank inside the hull as shown in FIG. 3, the fuel tank may be additionally installed on the deck of the floating structure as shown in FIG.

When a plurality of fuel tanks (3, 4) that can store two or more types of fuel from the initial design as shown in Figure 1 is installed in the hull 1, or as shown in Figure 3 can be stored another type of fuel later In the case where the fuel tanks 4 are added to the hull 1, these fuel tanks 3, 4 may be configured to be permanently attached to the hull 1, as shown in FIG. 4. It may be configured to be detached accordingly.

In the case of having a removable fuel tank 9 as shown in FIG. 4, it is possible to selectively mount a fuel tank capable of storing fuel of a greater amount in consideration of the amount of fuel used. Factors that determine the amount of fuel used include the type of propulsion system, the price of the fuel, and seasonal and environmental factors.

For example, the hull 1 of the floating structure is provided with a fuel tank 3 for liquid fuel, such as heavy oil, and a fuel tank 4 for gas fuel, such as LNG, respectively. If it is expected, the removable fuel tank 9 as the fuel tank for liquid fuel may be additionally mounted, and the removable fuel tank 9 as the fuel tank for gas fuel may be additionally installed if the amount of gas fuel is expected to be high.

In addition, when the amount of fuel used is small, it is also possible to remove the removable fuel tank 9, and to use the empty space inside the hull formed for this purpose, such as a space for cargo load.

For example, since gas fuel such as LNG has a lower density than liquid fuel such as HFO, when only a relatively dense liquid fuel is used, the removable fuel tank 9 is removed and the space inside the hull formed thereby is loaded. When the gas fuel is mainly used, the fuel tank for the gas fuel may be attached to the detachable fuel tank 9.

In addition, according to the present invention, as shown in Fig. 5, one space, for example, one fuel tank 3 or 4 may be configured to store different kinds of fuel as needed. For example, LNG or LPG may be selectively stored in the same space as needed, and heavy or diesel oil may be selectively stored in the same space.

As such, according to the present invention, different types of fuel tanks may be selectively accommodated in one space as shown in FIG. 4, and different types of fuel may be selectively accommodated in the same space as shown in FIG. 5. have.

FIG. 6 is a view schematically illustrating a piping system in a case where a fuel tank for gas fuel is mounted in a space provided for loading a fuel tank inside the hull, and FIG. 7 shows a diagram for loading a fuel tank inside the hull. A diagram schematically showing the piping system in the case where the fuel tank for liquid fuel is mounted in the space provided is shown. 8 and 9 schematically show a piping system in the case where a plurality of fuel tanks are installed inside the hull.

As shown in Figure 6 and 7, in order to use the fuel tanks of different types in the same space inside the hull should be connected to the appropriate pipe for each fuel.

For example, as shown in FIG. 6, when the fuel tank 4 for gas fuel, such as LNG, is installed in the hull inner space provided for loading a fuel tank, the gas fuel piping 30 and the evaporation gas for Pipe 40 may be connected.

The gas fuel pipe 30 is preferably connected to the lower portion of the gas fuel tank 4, the boil-off gas pipe 40 is the upper end of the gas fuel fuel tank 4, more specifically the gas fuel It is preferable to be connected to the gas dome (4a) formed on the upper fuel tank (4).

The gas fuel pipe 30 may be provided with an on-off valve 31 and a transfer pump 32, the transfer pump 32 may be replaced by a pump installed inside the fuel tank for gas fuel (4). In this case, the transfer pump installed in the gas fuel pipe 30 can be deleted. The on-off valve 41 may be installed in the boil-off gas pipe 40.

In addition, as shown in FIG. 7, when the fuel tank 3 for liquid fuel such as heavy oil is installed in the hull inner space provided for loading the fuel tank, the liquid fuel pipe 20 and the volatile gas are discharged. Vent pipe 50 to be connected may be connected.

The liquid fuel pipe 20 is preferably connected to the lower portion of the liquid fuel fuel tank 3, the vent pipe 50 is preferably connected to the upper end of the fuel tank for liquid fuel (3).

The liquid fuel pipe 20 may be provided with an on-off valve 21 and a transfer pump 22, the transfer pump 22 may be replaced by a pump installed inside the fuel tank for liquid fuel (3). In this case, the transfer pump installed in the liquid fuel pipe 20 can be deleted.

6 and 7 show that the liquid fuel pipe 20 is installed below the gas fuel pipe 30, but this is only an example, and the present invention is not limited by the installation position. However, the liquid fuel tank 3 is provided with a pipe connection head (not shown) at a position that can be aligned with the position where the liquid fuel pipe 20 is installed, and the gas fuel tank 4 is provided with a gas. It is preferable that a pipe connection head (not shown) is installed at a position that can be aligned with the position where the fuel pipe 30 is installed.

8 and 9, when a plurality of fuel tanks are mounted inside the hull, the piping system of the present invention, the main gas is connected to a device that requires fuel, such as a propulsion device or a power generating device One or more fuel pipes 35 and main liquid fuel pipes 25 and one or more fuel tanks 3 or 4 connected from the main gas fuel pipes 35 and the main liquid fuel pipes 25. Auxiliary gas fuel piping 36 and auxiliary liquid fuel piping 26 may be included.

At this time, the number of fuel gas tanks 4 for mounting and the number of fuel tanks 3 for liquid fuel may be the same as in FIG. 8, or may be different from each other as in FIG. 9.

8 (a) shows a state in which six liquid fuel fuel tanks 3 are connected to the main liquid fuel pipe 25, and in FIG. 8 (b) to the main gas fuel pipe 35. The state in which six gas fuel tanks 4 are connected is shown.

In addition, as shown in (c) of FIG. 8, some of the plurality of fuel tanks mounted inside the hull are equipped with a fuel tank for liquid fuel 3 so that the fuel tank is connected to the auxiliary liquid fuel pipe 26. In addition, the remaining part is equipped with a fuel tank for gas fuel 4, the fuel tank can be used in connection with the auxiliary gas fuel pipe (36).

For example, as shown in (c) of FIG. 8, two liquid fuel fuel tanks 3 are mounted, and the fuel tanks are connected to two auxiliary liquid fuel pipes 26, respectively, and the remaining four spaces are provided. For example, four gas fuel tanks 4 may be mounted, and the fuel tanks may be connected to four auxiliary gas fuel pipes 36, respectively.

By changing the combination of the number of liquid fuel fuel tank (3) and gas fuel fuel tank (4) as in one embodiment as described above, the liquid in the propulsion device (5) that can be used by mixing two or more different fuels The mixing ratio of fuel and gas fuel may be adjusted in some cases.

Meanwhile, in FIG. 9A, six liquid fuel fuel tanks 3 are connected to the main liquid fuel pipe 25. In FIG. 8B, the main gas fuel pipe 35 is illustrated. In the drawing, two gas fuel tanks 4 are connected. The reason why the number of the fuel tanks 3 for liquid fuel is illustrated to be greater than the number of the fuel tanks 4 for gas fuel is due to a restriction that limits the size of the fuel tank 3 for liquid fuel. Of course, it is not limited to.

As shown in FIG. 9, when the number of the fuel tanks 3 for liquid fuel and the number of the fuel tanks 4 for gas differ from each other, the auxiliary liquid fuel pipe 26 extending from the main liquid fuel pipe 25 is shown. The number of and the number of auxiliary gas fuel pipes 36 extending from the main gas fuel pipe 35 may be different from each other to correspond to the number of fuel tanks. That is, the number of the auxiliary liquid fuel piping 26 and the auxiliary gas fuel piping 36 does not necessarily need to be the same.

In the above description, although the liquid fuel tank 3 and the gas fuel tank 4 are installed in the floating structure, the fuel tank for the liquid fuel is not necessarily installed, but heavy oil or diesel Fuel tanks (eg, LNG tanks and LPG tanks) for storing two or more different fuels among fuels other than oil may be installed. As such, in a floating structure in which fuel tanks for storing two or more different fuels among fuels other than liquid fuels are installed, those that can use these fuels other than liquid fuels may be used as the propulsion device.

10 to 13, an example in which the present invention is applied to a container ship equipped with a heterogeneous fuel propulsion system as a propulsion device will be described.

The container ship is loaded with a plurality of containers in the hull and upper deck except for the cabin area 102 where the crew lives, the engine room where the propulsion device 105 is installed, the fuel tank 104, the machine room 108 and the like. As the container ship grows in size, it is preferable to move the cabin area 102 from the stern to the center of the hull (ie, from the position adjacent to the engine room located at the stern to the bow side not adjacent to the engine room) to ensure visibility. For utilization, the lower space of the cabin area 102, which is difficult to load a container, is used as a space in which the fuel tank 104 is disposed. In the present specification, the hull center portion refers to the stern of the hull provided with the propulsion device 105, that is, the front part of the engine room, and does not necessarily mean the central portion of the hull in the longitudinal direction.

The present inventors use liquefied gas, such as LNG, as a fuel of a propulsion device for propelling a cargo ship such as a container ship to avoid rising environmental regulations and to cope with the rise in liquid fuel prices such as heavy oil or diesel oil. Present a plan. For this purpose, as a propulsion system, a heterogeneous fuel propulsion system such as a high pressure gas injection engine such as ME-GI or a low pressure gas injection engine such as DFDE can be used as a fuel.

10 to 13 illustrate that the ME-GI is used as the propulsion device 105 and that the LNG fuel tank 104 as the fuel tank for the gas fuel is installed in the lower part of the cabin compartment 102, but only the present invention is provided. This is not limited. The heavy oil fuel tank as a fuel tank for liquid fuel for storing heavy oil to be used as fuel with the LNG in the propulsion device 105 may be installed in the lower part of the cabin area 102 together with the LNG fuel tank 104, and the like. It may be installed inside the hull, for example, an engine room.

According to the present invention, at least one of the LNG fuel tank and the heavy oil fuel tank is detachable from the hull and can be replaced with another type of fuel tank. According to the present invention, the number of LNG fuel tanks and the number of heavy oil fuel tanks mounted in the hull can be adjusted according to the amount of fuel used.

As the LNG fuel tank 104, a membrane type tank or a standalone tank may be used, and in particular, an IMO type B tank is preferably used. That is, the LNG fuel tank 104 is preferably a stand-alone tank in order to be detachable to the inside of the hull, among the various types of stand-alone tank hull protection means 111 (under the tank and the bottom of the hull) ( It is particularly preferred to use an IMO type B tank in which FIG. 11 and FIG. 13 are installed as secondary barriers.

The various devices for supplying fuel to the heterogeneous fuel propulsion system (gas injection engine) as the propulsion device 105 are preferably arranged in the machine room 108 located above the LNG fuel tank 104. As a fuel supply apparatus for supplying such LNG as a fuel to an engine, there are a recondenser, a high pressure pump, a cooler, a high pressure vaporizer, an evaporative gas compressor, and the like.

In the case where the liquefied gas in the cryogenic state is used as the fuel, appropriate insulation is required for such a fuel supply device, so the distance between the LNG fuel tank 104 and the machine room 108 as the fuel tank is preferably as close as possible. In the case where the distance between the LNG fuel tank 104 and the machine room 108 is far, heat loss is increased in terms of heat insulation on the transfer pipe for transferring LNG, which is not preferable.

In addition, the machine room 108 is preferably located between the LNG fuel tank 104 and the cabin compartment 102. As described above, since it is difficult to load a cargo such as a container in the lower part of the cabin area 102, it is preferable to use this space as the space where the LNG fuel tank 104 is to be located, and furthermore, the machine room 108 may use the LNG. Since it is desirable to be located close to the fuel tank 104, it is preferred that the machine room 108 be located at the top of the LNG fuel tank 104 at the same time as the bottom of the cabin area 102.

It is also advantageous in terms of maintenance that the machine room 108 is arranged between the cabin compartment 102 and the LNG fuel tank 104.

In order to supply LNG as fuel stored in the LNG fuel tank 104 to the ME-GI engine as the propulsion apparatus 105, LNG is supplied to the propulsion apparatus 105 via the machine room 108. At this time, in order to supply LNG as fuel from the machine room 108 to the propulsion unit 105, a fuel supply pipe is installed at the lower side or the side of the hull.

10 and 11 schematically show side and cross-sectional views of a floating structure (eg, a container ship) for explaining a state of supplying fuel through the lower pipe 120 for fuel supply, and FIGS. 11 and 13. Next, a side view and a cross-sectional view of a floating structure (eg, a container ship) for explaining a state of supplying fuel through a fuel supply side pipe 130 are schematically illustrated.

The lower pipe 120 for fuel supply and the side pipe 130 for fuel supply may be provided together, and only one of the pipes may be provided. Regardless of which piping is used, the piping for transferring LNG from the LNG fuel tank 104 to the machine room 108 may be the same. That is, the LNG may be transferred to the machine room 108 by the transfer pump 142 and the transfer pipe 140 installed below the LNG fuel tank 104.

In FIGS. 11 and 13, two LNG fuel tanks 104 are installed inside the hull, and the LNG is machined through a separate transfer pipe 140 and a transfer pump 142 from each LNG fuel tank 104. As illustrated in FIG. 9, LNG may be transferred from two LNG fuel tanks 104 through one main transfer pipe and a transfer pump as illustrated in FIG. 9. In addition, the transfer pump 142 does not need to be installed one for each fuel tank 104, and transfers the fuel of two or more fuel tanks 104 by using one transfer pump 142 in common. You may comprise.

When the lower pipe 120 for fuel supply is installed as shown in FIGS. 10 and 11, the LNG properly processed in the machine room 108 to be used as fuel in the propulsion device 105 is a hull lower space, detail. Preferably it is supplied to the propulsion unit 105 through the fuel supply lower pipe 120 is installed in the space between the LNG fuel tank 104 and the hull bottom.

In addition to the positions shown in FIGS. 10 and 11, the fuel supply lower pipe 120 is provided with a space provided between the left and right ballast tanks in the widthwise center portion of the hull (that is, the outermost bottom surface of the hull). And a space surrounded by the left and right ballast tanks and the inner bottom surface of the hull. In addition, a portion of the space where the container is loaded, that is, a space where one or two rows of containers can be loaded from the inner bottom surface in the center portion of the hull in the width direction of the hull is changed to a space where the lower pipe 120 for fuel supply is installed. It can also be used.

The portion of the lower pipe 120 for fuel supply extending downward from the machine room 108 to the lower hull space is installed in parallel with the transfer pipe 140 in front of the LNG fuel tank 104 in FIGS. 10 and 11. Although illustrated, the present invention is not limited only to this configuration, of course.

In addition, although two lower pipes 120 for fuel supply are shown in FIG. 11, the number of pipes may be appropriately changed in design, and the propulsion device 105 is provided through one main pipe as shown in FIG. 9. Of course, LNG can be supplied.

12 and 13, when the fuel supply side pipe 130 is installed, the LNG properly processed in the machine room 108 to be used as fuel in the propulsion device 105 is the hull side space, details Preferably it is supplied to the propulsion device 105 through the fuel supply side pipe 130 is installed to extend along the passageway (113) above the left and right ballast tank (112).

Although two fuel supply side pipes 130 are shown in FIG. 13, the number of pipes may be appropriately changed at design time, and as shown in FIG. Of course, LNG can be supplied.

As the lower pipe 120 for fuel supply and the side pipe 130 for fuel supply, a pipe having a double pipe structure may be used for safety. In the case of a container ship, since a container is loaded above the upper deck, it is preferable that a fuel supply pipe is not installed in the upper space of the deck.

In the above description, it is described that two different fuel tanks for different fuels are installed in the floating structure, but according to the present invention, three or more fuel tanks for different fuels may be installed.

The price and efficiency of each fuel may vary according to the times and according to various factors, but according to the present invention, the most efficient fuel can be selectively selected and used for propulsion at the present time. In addition, when development of highly efficient electric propulsion systems, solar systems, or wind power systems is completed in the near future, the present invention can be used to construct multiple fuel propulsion systems.

In addition, the above description has been made that the fuel from the fuel tank is supplied to a propulsion device consisting of a gas injection engine such as a ME-GI engine or a DFDE engine, the fuel is a gas in addition to the engines described above for generating power It may be supplied to a turbine or the like.

Although the floating structure having a gas injection engine according to the present invention has been described with reference to the accompanying drawings as described above, the present invention is not limited to the embodiments and drawings described above, and the present invention is within the claims. Of course, various modifications and variations can be made by those skilled in the art.

1 is a schematic side cross-sectional view of a floating structure having a heterogeneous fuel propulsion system in accordance with one embodiment of the present invention;

2 is a schematic side cross-sectional view of a floating structure having a heterogeneous fuel propulsion system in accordance with another embodiment of the present invention;

3 is a view for explaining a method of additionally installing another type of fuel tank in a floating structure designed and constructed to have only one type of fuel tank,

4 is a schematic side cross-sectional view of a floating structure having a heterogeneous fuel propulsion system in accordance with another embodiment of the present invention;

5 is a view for explaining the concept of selectively receiving different types of fuel in one same space according to the present invention,

FIG. 6 is a view schematically illustrating a piping system in a case where a fuel tank for gas fuel is mounted in a space provided for loading a fuel tank inside a hull; FIG.

FIG. 7 schematically illustrates a piping system in a case where a liquid fuel tank is mounted in a space provided for loading a fuel tank inside a hull; FIG.

8 and 9 schematically show examples of piping systems in the case where a plurality of fuel tanks are installed inside the hull, respectively;

10 and 11 are a side view and a cross-sectional view of the floating structure for explaining the state of supplying fuel through the lower pipe for fuel supply, and

12 and 13 are side and cross-sectional views of the floating structure for explaining the state of supplying fuel through the fuel supply side pipe.

Description of the Related Art

1: hull 1a: bow

1b: stern 1c: additional hull

1d: opening 3: fuel tank for liquid fuel

4: fuel tank for gas fuel 5: propulsion device

7: storage tank 9: removable fuel tank

20: liquid fuel piping 21, 31, 41, 51: on-off valve

22, 32: transfer pump 25: main liquid fuel piping

26: auxiliary liquid fuel piping 30: gas fuel piping

35: main gas fuel piping 36: auxiliary gas fuel piping

40: pipe for boil-off gas 50: vent pipe

102: cabin compartment 104: fuel tank

105: propulsion device 108: machine room

111: hull protection means 112: ballast tank

113: passage 120: lower pipe for fuel supply

130: side pipe for fuel supply 140: transfer pipe

142: transfer pump

Claims (22)

Floating structure with heterogeneous fuel propulsion system and used floating at sea, A cabin area located at the center of the floating structure on the upper deck of the floating structure; A fuel tank installed below the cabin area in the hull of the floating structure; A fuel supply pipe extending along a lower portion or side of the hull of the floating structure to supply fuel stored in the fuel tank to the heterogeneous fuel propulsion system; Floating structure having a heterogeneous fuel propulsion system comprising a. The method according to claim 1, A fuel supply lower pipe extending along the lower portion of the hull for supplying fuel extends through the space between the fuel tank and the bottom of the hull. The method according to claim 1, A fuel supply side pipe extending along the side of the hull for fuel supply is a floating structure having a heterogeneous fuel propulsion system, characterized in that it extends through the passage formed above the ballast tank on the left and right sides of the hull. The method of claim 3, The fuel supply side pipe extending through the passage is a floating structure having a heterogeneous fuel propulsion system, characterized in that consisting of a double pipe. The method according to claim 1, The floating structure has a heterogeneous fuel propulsion system, further comprising a machine room located between the cabin compartment and the fuel tank to process the fuel stored in the fuel tank prior to supplying the heterogeneous fuel propulsion system. Floating structures. The method according to claim 5, The floating structure further includes a transfer pipe connecting the lower portion of the fuel tank and the machine room, wherein the fuel supply pipe is connected to the machine room and the heterogeneous fuel propulsion system. Formula structures. The method according to claim 6, The transfer pipe is a floating structure having a heterogeneous fuel propulsion system, characterized in that having a transfer pump for supplying the fuel discharged from the lower portion of the fuel tank to the machine room located above the fuel tank. The method according to claim 1, At least one fuel tank is installed, and the fuel supply pipe is a floating structure having a heterogeneous fuel propulsion system, characterized in that installed in the same number as the number of installation of the fuel tank. The method according to claim 1, The fuel tank is installed in plurality, the fuel supply pipe is a floating type having a heterogeneous fuel propulsion system characterized in that the transfer pump for transferring the fuel less than the number of the fuel tank to use the transfer pump in common. structure. The method according to claim 1, A plurality of fuel tanks are installed, the fuel supply pipe is a floating structure having a heterogeneous fuel propulsion system, characterized in that the plurality of auxiliary pipes extending from each of the fuel tanks to be combined into one main pipe. The method according to claim 5, The fuel stored in the fuel tank is liquefied gas, Floating having a heterogeneous fuel propulsion system in the machine room is provided with at least one of a recondenser, a pump, a cooler, a vaporizer, and an evaporative gas compressor for processing the liquefied gas for use in the heterogeneous fuel propulsion system. Formula structures. The method according to claim 1, The heterogeneous fuel propulsion system is a floating structure having a heterogeneous fuel propulsion system, characterized in that the low pressure gas injection engine or high pressure gas injection engine. The method according to claim 1, The heterogeneous fuel propulsion system is a floating structure having a heterogeneous fuel propulsion system, characterized in that the gas turbine. The method according to claim 12, The floating structure is a floating structure having a heterogeneous fuel propulsion system further comprises a fuel tank for storing liquid fuel so that at least one of the heavy oil and diesel oil can be used as fuel. The method according to claim 1, The fuel tank is a floating structure having a heterogeneous fuel propulsion system, characterized in that detachable from the hull. The method according to claim 1, The fuel tank is a floating structure having a heterogeneous fuel propulsion system, characterized in that the independent tank capable of storing liquefied gas. The method according to claim 1, The floating structure, the floating structure having a heterogeneous fuel propulsion system, characterized in that it further comprises a space for loading the cargo on at least one of the upper and upper deck of the hull. The method according to claim 1, The floating structure is a floating structure having a heterogeneous fuel propulsion system, characterized in that the vessel capable of sailing by the magnetic force by the heterogeneous fuel propulsion system. 19. The method of claim 18, The vessel is a floating structure having a heterogeneous fuel propulsion system, characterized in that the container ship. Floating structures used floating at sea, A fuel tank for gas fuel installed inside the hull of the floating structure; An energy generator for generating energy by receiving fuel stored in the gas fuel tank; A fuel supply pipe extending along the lower side or the side of the hull of the floating structure to supply fuel from the fuel tank for gas fuel positioned on the bower side of the energy generator to the energy generator; Floating structure comprising a. The method of claim 20, Floating structure, characterized in that the cabin area and the cargo loading space is arranged above the upper deck of the floating structure. A vessel having a high pressure gas injection engine and used floating at sea, A cabin area positioned on the upper deck of the ship, more prone than the high-pressure gas injection engine; A fuel tank installed under the cabin area in the hull of the ship; A fuel supply pipe extending along a lower portion or side of the ship's hull to supply fuel stored in the fuel tank to the heterogeneous fuel propulsion system; Ship comprising a.

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