KR20170054210A - Electronic propulsion system using gas turbine and a ship having the same - Google Patents

Abstract

The present invention relates to a gas turbine based electronic propulsion system and a ship including the same, comprising: a hull having an upper deck; an engine room provided at a lower portion of the upper deck; a gas turbine generating electricity for propelling the hull; a heat recovery device recovering exhaust heat to generate steam; and a steam turbine generating electricity by using the steam generated from the heat recovery device, wherein the gas turbine and the heat recovery device are provided at the outside of the engine room, the steam turbine is provided in the engine room, and the engine room is configured with a multi-layer structure having a plurality of decks dividing the top and bottom of a flat section of a certain height into different layers in a vertical direction.

Description

TECHNICAL FIELD [0001] The present invention relates to a gas turbine-based electric propulsion system and a ship including the propulsion system.

The present invention relates to a gas turbine based electric propulsion system and a ship including the same.

A ship is a means of transporting large quantities of minerals, crude oil, natural gas, or several thousand containers. It is made of steel and buoyant to float on the water surface. The thrust generated by rotation of the propeller ≪ / RTI >

Such a ship generates thrust by driving an engine or the like. At this time, the engine moves the piston by using gasoline or diesel so that the crankshaft is rotated by the reciprocating motion of the piston, so that the shaft connected to the crankshaft is rotated to propel the propeller .

In recent years, however, LNG fuel supply systems for driving an engine using LNG as a fuel have been used in an LNG carrier carrying Liquefied Natural Gas (LNG) It is also applied to other ships.

Generally, it is known that LNG is a clean fuel and its reserves are more abundant than petroleum, and its usage is rapidly increasing as mining and transfer technology develops. This LNG is generally stored in a liquid state at a temperature of -162 ° C. or below under 1 atm. The volume of liquefied methane is about one sixth of the volume of methane in a gaseous state, The specific gravity is 0.42, which is about one half of that of crude oil.

However, the temperature and pressure required to drive the engine may be different from the state of the LNG stored in the tank. Therefore, in recent years, research and development have been made on the technology of controlling the temperature and pressure of the LNG stored in the liquid state and supplying it to the engine.

The present invention provides a gas turbine-based electric propulsion system that generates optimum efficiency by generating gas turbine and steam turbine to generate energy for propulsion, To provide a ship.

A gas turbine based electric propulsion vessel according to one aspect of the present invention comprises: a hull having an upper deck; An engine room provided below the upper deck; A gas turbine generating electricity for propulsion of the hull; An arrangement recovery device for recovering exhaust heat to generate steam; And a steam turbine generating electricity using steam generated in the exhaust gas recycling apparatus, wherein the gas turbine and the exhaust gas recycling apparatus are provided outside the engine room, and the steam turbine is disposed in the engine room And the engine room is a multi-layered structure in which a plurality of decks are arranged vertically in a plane section of a predetermined height and are divided into different layers.

Specifically, the deck may be divided into upper and lower layers in the entire flat section of the engine room.

Specifically, a switch board for controlling energy generated in the gas turbine and the steam turbine; A converter connected to the switch board to convert energy; And a motor that receives energy from the converter and rotates the rotation shaft.

Specifically, the engine room may include a tank top provided with the motor; A fourth deck provided with at least one of the converter and the switch board; A third deck provided with at least one of the converter and the switch board; And a second deck provided with the steam turbine.

Specifically, it may further include a power generation engine that generates electricity by consuming oil supplied from an oil storage tank.

Specifically, the power generation engine may be provided on the same deck as the switchboard.

Specifically, the converter may be provided in the fourth deck, the switch board may be provided in the third deck, and the power generation engine may be provided in the third deck.

Specifically, the gas turbine and the arrangement recovery apparatus may further include an engine casing provided on an upper portion of the upper deck, wherein the gas turbine and the arrangement recovery apparatus may be provided in the engine casing.

A gas turbine based electric propulsion system and a ship including the same, according to the present invention, provide a propulsion gas turbine and a power generation steam turbine and optimize the delivery of the fluid including gas supply to the gas turbine, It is possible to realize an optimum arrangement considering the space utilization.

1 is a conceptual diagram of a gas turbine based electric propulsion system according to an embodiment of the present invention.
2 is a partial side view of a ship in accordance with an embodiment of the present invention.
3 and 4 are sectional views of A and B in Fig.
5 is a cross-sectional view of C in Fig.
6 is a cross-sectional view of D in Fig.
7 is a side view of a conventional vessel.
8 and 9 are side views of a ship according to an embodiment of the present invention.
10 and 11 are sectional views of EE in Fig.
12 is a side view of a ship according to another embodiment of the present invention.
13 is a side view of a ship according to another embodiment of the present invention.
14 is a sectional view of FF in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, the liquefied gas may be LPG, LNG, or ethane, and may be, for example, LNG (Liquefied Natural Gas), and the evaporation gas may refer to BOG (Boil Off Gas) such as natural vaporized LNG.

It is also noted that the liquefied gas can be referred to irrespective of the state change such as liquid state, gas state, mixed state of liquid and gas, supercooled state, supercritical state, and the like.

Hereinafter, the contents of the flow of various fluids (gas, exhaust, steam, etc.) in the process of supplying gas and the structural characteristics will be explained.

- Contents of Fluid Flow

1 is a conceptual diagram of a gas turbine based electric propulsion system according to an embodiment of the present invention.

Referring to FIG. 1, a gas turbine based electric propulsion system 1 according to an embodiment of the present invention is mounted on a ship 100 and includes a liquefied gas storage tank 10, an oil storage tank 20, a gas A turbine 30, an array recovery device 40, a steam turbine 50, a gas combustion device 60, a power generation engine 70, and a power distribution panel 90.

The liquefied gas storage tank 10 stores liquefied gas. At this time, the liquefied gas may be stored in a liquid state in the liquefied gas storage tank 10, but there may be an evaporated gas in which the liquefied gas is vaporized in the liquefied gas storage tank 10 due to heat penetration from the outside.

The liquefied gas and the evaporated gas stored in the liquefied gas storage tank 10 may be referred to as a gas. Hereinafter, it is noted that the gas is a representation meaning at least one of liquefied gas and evaporated gas.

The gas (liquefied gas or evaporated gas) stored in the liquefied gas storage tank 10 can be consumed by the gas turbine 30, the gas combustion device 60 and the like and supplied to the gas turbine 30 or the gas combustion device 60 A gas supply unit (a gas supply line 12, a compressor 13, a liquefied gas supply line 15, a liquefied gas pump 16, and the like) may be provided to supply gas.

The oil storage tank 20 stores oil. The oil may be MGO or the like, and may be a fluid having a liquid state even at room temperature. The type of oil is not particularly limited and may refer to all fluid fuels that are currently used in the ship 100 area.

The oil stored in the oil storage tank 20 can be consumed by the gas turbine 30, the gas combustion device 60 and the like and is supplied to the gas turbine 30 or the gas combustion device 60, (Oil supply line 21, oil pump 22, etc.) may be provided.

The gas turbine 30 generates electricity for propulsion of the ship, specifically, by consuming the gas supplied from the liquefied gas storage tank 10. The gas turbine 30 has a generator (not shown) and can generate energy (power) using the rotational force of an impeller (not shown) generated by the combustion of gas.

The gas turbine 30 may consume evaporative or liquefied gas generated in the liquefied gas storage tank 10. The gas supply line 12 and the liquefied gas supply line 15 may be connected to the gas turbine 30 from the liquefied gas storage tank 10 and valves for controlling the flow rate of the evaporation gas or the liquefied gas 121, and 151 may be provided.

In the gas supply line 12, a preheater 14 and a compressor 13 may be provided. The preheater 14 preheats the evaporation gas stored at a cryogenic temperature in the liquefied gas storage tank 10 to reduce the load on the compressor 13, protect the compressor 13, and utilize various heat sources.

The compressor (13) is composed of multiple stages, and compresses the evaporated gas preheated by the preheater (14) and supplies it to the gas turbine (30). The pressure of the evaporation gas compressed by the compressor 13 may be 10 to 50 bar, and may be about 30 bar, for example.

A liquefied gas pump 16, a vaporizer 17, a gas-liquid separator 18, and a liquefied gas heat exchanger 19 may be provided in the liquefied gas supply line 15. The liquefied gas pump 16 is provided in at least one of the inside and the outside of the liquefied gas storage tank 10 to transfer the liquefied gas stored in the liquefied gas storage tank 10 to the liquefied gas supply line 15.

The liquefied gas pump 16 can pressurize the liquefied gas to 10 to 50 bar and when the liquefied gas pump 16 pressurizes the liquefied gas to the pressure of the evaporated gas downstream of the compressor 13, 15 can join the gas supply line 12 downstream of the compressor 13.

If the pressure of the liquefied gas pressurized by the liquefied gas pump 16 does not reach the pressure of the evaporated gas downstream of the compressor 13, the liquefied gas supply line 15 may be provided upstream of the compressor 13, 13 in the middle of the gas supply line 12.

The vaporizer (17) vaporizes the liquefied gas conveyed by the liquefied gas pump (16). In this case, the vaporization does not necessarily mean that the gas phase is in a liquid state, but may mean heating.

The gas-liquid separator 18 separates the vaporized liquefied gas into a gas and a liquid. Liquid may be recovered to the liquefied gas storage tank 10 along a liquefied gas recovery line 181 connected to the liquefied gas storage tank 10 in the gas-liquid separator 18. [

Generally, the gas-liquid separator 18 can be used for increasing the methane price. When the vaporizer 17 is heated so that the methane in the liquefied gas is changed to the vapor phase, the heavy carbon (propane, butane) can remain in the liquid phase. At this time, if the gas-liquid separator 18 separates the liquefied gas into a gas and a liquid, liquefied gas having a high specific gravity of methane can be supplied to the gas turbine 30 compared to the liquid heavy-carbon.

However, in the present invention, the liquefied gas is consumed by the gas turbine 30, and the gas turbine 30 is not affected by the methane price. Therefore, the gas-liquid separator 18 of the present invention simply blocks the flow of the liquid liquefied gas into the gas turbine 30, and may not be directly related to the methane-regulating. Therefore, the gas-liquid separator 18 and the liquefied gas recovery line 181 connected thereto can be omitted.

The liquefied gas heat exchanger 19 is connected to the gas turbine 30 at a required temperature of the liquefied gas in the gaseous state separated by the gas-liquid separator 18 (corresponding to the forced evaporation gas and the aforesaid evaporated gas is the natural evaporation gas) Can be heated properly. At this time, the required temperature of the gas turbine 30 may be 0 to 50 degrees.

The liquefied gas heated in the liquefied gas heat exchanger (19) can be supplied to the gas turbine (30) by joining with the evaporated gas compressed in the compressor (13). At this time, the evaporation gas may not be separately heated downstream of the compressor 13, which is due to a temperature rise which is accompanied when the compressor 13 compresses the evaporation gas to the required temperature of the gas turbine 30.

The liquefied gas heat exchanger 19 may be liquefied at a temperature higher than the required temperature of the gas turbine 30 in case the temperature of the evaporated gas discharged from the compressor 13 does not satisfy the required temperature of the gas turbine 30, The gas may be heated so that the mixed gas is mixed with the evaporated gas so that the mixed gas satisfies the required temperature of the gas turbine 30. [

The gas turbine 30 supplied with the liquefied gas and / or the evaporated gas in this way can realize the propulsion of the ship 100 by producing electricity. The energy produced by the gas turbine 30 can be used to operate the motor 93 for rotation of the rotary shaft 94 provided with a propeller (not shown).

The exhaust purifying device (40) recovers the exhaust (or exhaust heat) to generate the heat. At this time, the fruit may be steam, and the array recovery device 40 may be an economizer. Hereinafter, the fruit is steam only for the sake of convenience. The batch recovery device 40 can heat water to exhaust to produce steam and supply the steam to the steam turbine 50.

The exhaust gas used by the exhaust gas recycling apparatus 40 may be exhaust gas generated from the gas turbine 30. That is, when the gas turbine 30 exhausts gas while consuming the gas, the exhausted exhaust gas is supplied to the exhaust gas collecting device 40 along the exhaust gas recovery line 41 to assist in the production of steam.

In addition, the exhaust gas recycling apparatus 40 can generate steam by receiving the exhaust gas generated when the gas combustion apparatus 60 burns the evaporated gas. The gas combustion apparatus 60 burns the evaporated gas of the liquefied gas storage tank 10 at this time because the exhaust is an energy source having heat energy. To the array recovery device (40). To this end, an exhaust delivery line 63 may be provided from the exhaust discharge line 62 through which the exhaust gas escapes from the gas combustion device 60 to the array collection apparatus 40.

The exhaust delivery line 63 is connected to the exhaust recovery line 41 in the gas combustion device 60. The exhaust gas of the gas turbine 30 is merged with the exhaust gas of the gas combustion device 60, . At this time, a valve 412 may be provided at a junction point between the exhaust gas delivery line 63 and the exhaust gas collection line 41.

The arrangement recovery device 40 may be provided at a capacity capable of extinguishing all the exhaust generated when 100% of the gas turbine 30 is operated. However, when the array recovery device 40 is in operation, When the operation of the exhaust gas recirculation line 40 is stopped, the treatment of the exhaust gas supplied through the exhaust gas recirculation line 41 may be problematic. Therefore, in order to prepare for a situation such as shutdown of the exhaust purifier 40, the present invention provides an exhaust purge line 42 for exhausting the exhaust gas of the gas turbine 30 to bypass the exhaust purifier 40, .

In addition, when the operation of the steam turbine 50 consumes steam generated by the exhaust heat recovery apparatus 40 even if the exhaust heat recovery apparatus 40 operates normally, the operation of the exhaust heat recovery apparatus 40 is stopped You may. Thus, in the present embodiment, the exhaust emission line 42 is provided in order to compare the failures of the exhaust heat recovery apparatus 40 and the steam turbine 50.

The exhaust emission line 42 is branched at the exhaust emission recovery line 41 and can exhaust the exhaust to the outside. The point at which the exhaust emission line 42 branches at the exhaust return line 41 may be upstream of the point at which the exhaust delivery line 63 joins the exhaust return line 41, It can be a separate consumer or standby.

A valve 411 is provided at a position where the exhaust emission line 42 branches from the exhaust emission recovery line 41 and the opening degree of the valve 411 can be controlled by the control unit 80. The control unit 80 may control the valve 411 so that the surplus exhaust gas is discharged to the outside instead of the array recovery apparatus 40. In this case,

The steam generated when the exhaust heat recovery apparatus 40 generates steam by using the exhaust gas from the gas combustion apparatus 60 and the exhaust gas from the gas turbine 30 is used for the steam turbine 50 to ensure 100% . However, the generation of exhaust gas by the gas turbine 30 means that energy is generated by the operation of the gas turbine 30, so that the steam turbine 50 need not be operated at 100%.

Accordingly, some of the steam is surplus that can not be consumed by the steam turbine 50, and it can escape to the outside through the steam branch line 52 to be described later. However, in the present embodiment, the control unit 80 controls the gas turbine 30 so that the load of the gas turbine 30 becomes equal to or higher than the reference value, for example, in consideration of the load of the gas turbine 30, The opening degree of the back side valve 411 can be increased to a predetermined value or higher, and the amount of exhaust gas discharged through the exhaust emission line 42 can be increased.

The exhaust emission line 42 may be connected directly to the outside and / or may exhaust the exhaust through the exhaust emission line 62. In the latter case, the exhaust emission line 42 is connected to the exhaust emission line 42, And the exhaust communication line 43 can be joined to the exhaust emission line 62 of the gas combustion device 60 through the exhaust communication line 43 connecting the exhaust emission line 62 and the exhaust emission line 62, May be downstream of the point at which the exhaust delivery line 63 branches at the exhaust discharge line 62. [

Therefore, the exhaust gas of the gas combustion device (60) and the exhaust gas of the gas turbine (30) can be mixed and discharged to the outside. Of course, the exhaust of the gas combustion device (60) can be joined to the exhaust emission line (42) through the exhaust communication line (43). The exhaust emission line 62 or the exhaust emission line 42 may be connected to the exhaust emission line 42 or the exhaust emission line 62 through the exhaust communication line 43 without being connected to the outside.

The steam turbine (50) receives steam from the array recovery device (40) and generates electricity. The steam turbine 50 can generate energy by rotating a multi-stage impeller (not shown) using the steam supplied from the arrangement recovery device 40, and the energy produced by the steam turbine 50 can be utilized for propulsion .

However, the energy that can be produced by the steam turbine 50 may be assumed to be the operation of the gas turbine 30. Thus, the amount of energy produced by the steam turbine 50 may be smaller than the gas turbine 30.

The steam supply line 51 may be connected to the steam turbine 50 in the array recovery device 40. [ The steam supply line (51) transfers the steam generated in the array recovery device (40) to the steam turbine (50). At this time, the steam can be condensed after turning the steam turbine 50, and the condensed water can be recovered along the steam recovery line 53 connected to the batch recovery device 40 from the steam turbine 50. The steam recovery line (53) is provided with a steam pump (54) to transfer the condensed water.

However, when the steam turbine 50 has a problem in operation (for example, when the operation of the steam turbine 50 is stopped), there is a problem of the steam generated in the array recovery device 40. If the operation of the gas turbine 30 is maintained even if the operation of the steam turbine 50 is stopped, steam can be continuously generated.

Accordingly, the present invention can provide a steam branch line 52 for discharging steam to the outside. The steam branch line 52 is branched from the steam supply line 51 or branched from the steam turbine 50 to discharge the steam to the outside. At this time, the outside is not a separate steam demanding unit (not shown, Or may be a configuration to generate hot water or the like) or may mean air.

The branching of the steam branch line 52 at the steam turbine 50 means that when the steam turbine 50 includes a multi-stage impeller, the steam is blown after the impeller is partially blown. The steam turbine 50 may be operated at about 10 to 40 bars (35 bar, for example) and about 400 degrees of steam. Generally, in the case of a steam consumer consuming steam, the steam turbine 50 is lower Pressure and low temperature steam may be required.

Accordingly, the steam branch line 52 allows the steam to partially branch off the first and second impellers in the steam turbine 50 and then to diverge from the steam turbine 50, Can be supplied to the steam demanding place.

That is, the steam energy required by the steam turbine 50 and the steam energy required by the steam consumer are different. In this embodiment, since the impeller can be partially turned by the difference, the energy can be efficiently recovered. In addition, since the decompressed and cooled steam is delivered to the steam demanding place, it is possible to protect the steam demanding place.

The steam branch line 52 can discharge surplus to an outside steam consumer when steam is supplied to the steam turbine 50 from the array recovery device 40. When the operation of the steam turbine 50 is completely stopped, the entire amount of steam generated in the exhaust heat collecting device 40 can be discharged to the outside as an excess portion.

The steam branch line 52 may be branched from the steam supply line 51 in place of the steam turbine 50 in order to prevent the impeller contained in the steam turbine 50 from rotating when the steam turbine 50 fails. . Of course, the steam branch line 52 may be branched from the steam supply line 51 and the steam turbine 50, respectively, and may be connected to the steam consumer. Or the steam branch line 52 may be directly connected to the steam demanding place in the arrangement recycling apparatus 40.

The present invention can be applied to a steam turbine (50), which is capable of reducing the amount of steam that can be consumed even if the steam turbine (50) The flow rate of the steam discharged to the outside through the line 52 may be adjusted. For this purpose, the controller 80 may be provided.

The control unit 80 can sense the load of the steam turbine 50 and the flow rate of the steam flowing to the steam supply line 51 and adjust the opening and closing (and / or opening) of the steam branch line 52. The control unit 80 controls the flow rate of the steam to be supplied to the steam turbine 50 to the steam supply line 51. The control unit 80 controls the flow rate of the steam to be supplied to the steam turbine 50, It is possible to control the valve 521 provided in the steam branch line 52 by calculating the surplus.

The control unit 80 may adjust the pressure of the steam supplied from the steam branch line 52 to the steam turbine 50 by adjusting the opening degree of the valve 521 provided in the steam branch line 52. That is, if the valve 521 is opened so that the amount of steam larger than the surplus amount is discharged to the outside, the pressure of the steam will be lowered, and the valve 521 may be opened or the valve 521 may be opened If you do not open it, the steam pressure will rise. In this way, the control unit 80 can adjust the steam supply pressure of the steam turbine 50.

The gas combustion device (60) burns the evaporated gas generated in the liquefied gas storage tank (10). A gas combustion line 61 may be connected to the gas combustion apparatus 60 and a gas combustion line 61 may be connected to the gas supply line 12 downstream of the compressor 13 And the gas combustion line 61 is connected to a valve 611 for regulating (reducing) the pressure of the evaporation gas to a pressure for burning in the gas combustion apparatus 60 May be provided.

The exhaust gas generated in the process of burning the evaporative gas by the gas combustion apparatus 60 is discharged to the outside through the exhaust discharge line 62 or is discharged through the exhaust delivery line 63 branched from the exhaust discharge line 62 And may be supplied to the recovery device 40. Therefore, even if the duct burner for burning the evaporated gas and delivering the exhaust heat to the exhaust heat collecting device 40 and the boiler for generating steam and delivering steam to the steam turbine are omitted, the exhaust heat recovering device 40 recovers a sufficient exhaust heat So that steam generation can be stably and smoothly implemented.

The exhaust delivery line 63 can be branched at the exhaust discharge line 62 and connected to the exhaust return line 41 and a valve 631 is provided at the point where the exhaust delivery line 63 is branched at the exhaust discharge line 62 . These valves (including the valves described in this specification) comprise a structure having a plurality of flaps or the like, and can be controlled by the control unit 80.

The control unit 80 controls the valve 411 at the point at which the exhaust emission line 42 branches at the exhaust recovery line 41 to the valve at the point where the exhaust emission line 63 branches from the exhaust emission line 62 631). When the valve 631 of the exhaust gas discharge line 62 is opened, the exhaust gas of the gas combustion device 60 flows into the exhaust gas recovery line 41, so that the valve 411 of the exhaust gas discharge line 42 is at least partially (Backflow to the exhaust emission line 62 through the exhaust emission line 42, backflow to the gas turbine 30 via the exhaust recovery line 41, etc.) can be prevented.

In the case of shutting off the valve 411 of the exhaust emission line 42 when the exhaust of the gas combustion device 60 is transmitted to the exhaust gas recycling device 40, It may be a situation in which the turbine 30 is not used.

Since the gas combustion apparatus 60 is provided at a large capacity capable of treating 100% of the evaporated gas generated in the liquefied gas storage tank 10, the amount of exhaust gas delivered through the exhaust delivery line 63 is reduced 40, the steam can exceed the consumption of 100% of the steam turbine 50 when it is operated. Therefore, it is possible to transfer an appropriate flow rate of the exhaust gas of the gas combustion apparatus 60 to the arrangement / collection apparatus 40 by using the control unit 80.

However, when the flow rate of the evaporation gas generated in the liquefied gas storage tank 10 is small (less than the reference value), sufficient exhaust may not be produced in the gas combustion apparatus 60. It is not a serious problem if the gas turbine 30 is in operation but is dependent on the operation of the gas turbine 30 when the gas turbine 30 is in trouble (for example, when the gas turbine 30 fails) There is a problem in the operation of the exhaust heat recovery device 40 and the steam turbine 50 and the final result is that the energy in the ship 100 is exhausted.

Therefore, the present invention enables the gas combustion apparatus 60 to burn oil in addition to the evaporation gas supplied through the gas supply unit. That is, the gas combustion device 60 can burn the oil supplied from the oil storage tank 20 through the oil supply unit to generate exhaust. To this end, an oil supply line 21 may be provided from the oil storage tank 20 to the gas combustion device 60.

In other words, the gas combustion apparatus 60 is operated in a state where the generation of energy is interrupted due to a problem in the operation of the gas turbine 30 (or when gas supply is stopped due to a problem in operation of the gas supply unit) The oil is used to generate exhaust gas and the exhaust gas is supplied to the steam turbine 50 via the steam recovery device 40, so that the interruption of energy production can be minimized. To this end, the gas combustion apparatus 60 may be provided with an oil burner (not shown) in addition to a gas burner (not shown).

The gas combustion device 60 is supplied with the oil and is supplied to the array recovery device 40 when the flow rate of the evaporation gas generated in the liquefied gas storage tank 10 is lower than the reference value or when the operation of the gas turbine 30 is stopped, It is possible to provide the required exhaust heat.

Conversely, when the flow rate of the evaporative gas generated in the liquefied gas storage tank 10 is equal to or greater than the reference value, the exhaust gas recycling apparatus 40 is configured such that the exhaust gas generated in the gas turbine 30 and / And the steam generated by receiving the generated exhaust gas.

The flow rate of the evaporation gas can be measured by a pressure gauge 11 provided in the liquefied gas storage tank 10. When the pressure is high, the flow rate of the evaporation gas is large, and when the pressure is low, the flow rate of the evaporation gas is small. Of course, the pressure gauge 11 may be replaced by a flow meter (not shown) provided in the gas supply line 12. [

The present invention enables the control unit (80) to control the supply of gas and oil based on the pressure gauge (11). The control unit 80 controls the valve 211 provided in the oil supply line 21 so that the oil is delivered to the gas combustion device 60. If the flow rate of the evaporation gas is equal to or more than the reference value The valve 611 provided in the gas combustion line 61 may be adjusted to transfer the evaporated gas to the gas combustion device 60. [ The control unit 80 controls the opening and closing of the valves 211 and 611 to control whether the evaporation gas and / or oil is supplied and the supply flow rate.

The gas combustion apparatus 60 in the liquefied gas storage tank 10 may be provided with the gas supply line 12 and the gas combustion line 61 as well as the free flow line 64.

The free flow line 64 is branched from the gas supply line 12 and connected to the gas combustion device 60 to deliver the vaporized gas to the gas combustion device 60. The free flow line 64 is connected to the gas supply line 12, 13 may be provided in parallel.

The free flow line 64 branches off upstream of the preheater 14 or the compressor 13 in the gas supply line 12 and is connected to the gas combustion device 60 independently of the gas combustion line 61, May be joined to the gas combustion device (60) by joining with the gas combustion line (61). At this time, the free flow line 64 is connected to the gas combustion device 60 without compressing the evaporative gas generated in the liquefied gas storage tank 10 through the pressure difference between the liquefied gas storage tank 10 and the gas combustion device 60 .

When the internal pressure of the liquefied gas storage tank 10 rises due to an increase in the amount of evaporation gas in the liquefied gas storage tank 10, the evaporated gas can flow naturally along the free flow line 64 to the gas combustion apparatus 60. Conversely, if the evaporation gas of the liquefied gas storage tank 10 is reduced, the internal pressure of the liquefied gas storage tank 10 is lowered, so that the flow rate of the evaporation gas flowing along the free flow line 64 can be reduced or eliminated.

The free flow line 64 only delivers the evaporated gas in accordance with the internal pressure of the liquefied gas storage tank 10 so that the pressure of the evaporated gas delivered through the free flow line 64 is reduced by the gas combustion May be relatively lower than the pressure of the evaporative gas delivered through line (61).

In this case, in order to match the flow rate of the evaporation gas flowing along the free flow line 64 with the flow rate of the evaporation gas flowing along the gas combustion device, the diameter of the free flow line 64 is adjusted by the gas supply line 12 and the gas combustion line (61).

The total pressure of the free flow line 64 is attributed to the pressure of the liquefied gas storage tank 10 because there is no resistance to the flow of the liquefied gas because the compressor 13 is not provided in the free flow line 64. At this time, the free flow line 64 has a diameter capable of digesting 100% of the evaporated gas generated in the liquefied gas storage tank 10.

On the other hand, since the gas combustion line 61 is relatively small in diameter, in order to supply 100% of the evaporated gas generated in the liquefied gas storage tank 10 to the gas combustion device 60, the flow pressure must be increased. Thus, the gas combustion line 61 can be connected to the intermediate stage of the compressor 13, which is provided downstream or in multiple stages of the compressor 13, so that the flow pressure of the gas combustion line 61 is maintained at least 5 bar.

The free flow line 64 may be provided with a heater 65 for heating the evaporation gas. At this time, the evaporated gas heated by the heater 65 and the evaporated gas heated by the preheater 14 may have the same pressure because the preheater 14 is provided upstream of the compressor 13.

The power generation engine 70 consumes the oil delivered from the oil storage tank 20 to generate electricity. The power generation engine 70 is configured to control the operation of the gas turbine 30 and the steam turbine 50 in a case where the gas in the liquefied gas storage tank 10 is insufficient, Which may be an extra power generation facility.

The pressure of the oil supplied to the power generation engine 70 may be about 5 bar, which can be adjusted by the oil pump 22. The oil storage pressure of the oil storage tank 20 is about 1 bar, but the oil can be compressed by the oil pump 22 and transmitted to the power generation engine 70.

The power distribution board 90 processes the energy produced by the gas turbine 30, the steam turbine 50, and the power generation engine 70. The electric power distribution board 90 can deliver electricity, which is energy produced by the gas turbine 30 or the like, to various customers in the ship 100. At this time, the most typical one of the demanders is a rotary shaft 94 for propelling the ship 100, And a motor 93 for driving the motor.

Hereinafter, the process of resuming operation upon occurrence of a blackout will be described.

The blackout means that the power is exhausted and the operation of the various components such as the compressor 13, the liquefied gas pump 16, the gas turbine 30, and the steam turbine 50 is interrupted. However, it is assumed that the supply of oil during blackout is possible.

When blackout occurs, the present invention can generate power using the power generation engine 70, and restart the liquefied gas pump 16 based on the generated power. In order to recover the normal operation of the gas turbine 30 or the like, it is necessary to supply the liquefied gas or the evaporative gas. When the liquefied gas pump 16 and the compressor 13 are both stopped, the liquefied gas pump 16 is restarted The energy required for restarting the compressor 13 may be lower than the energy required for restarting the compressor 13. Therefore, the present invention can resume the operation of the liquefied gas pump 16, not the compressor 13, using the electric power produced through the power generation engine 70.

The liquefied gas pump 16 whose operation is resumed transfers the liquefied gas to the liquefied gas supply line 15 which can be supplied to the gas combustion apparatus 60 along the gas combustion line 61, The device 60 may combust liquefied gas to produce exhaust.

The liquefied gas supplied by the liquefied gas pump 16 is supplied to the gas combustion apparatus 60 instead of the gas turbine 30 because the liquefied gas pump 16 which is restarted is barely operated with a low load, Because the liquefied gas pressurized by the gas turbine 16 may not have the pressure required by the gas turbine 30.

 When the gas combustion device 60 generates exhaust, the exhaust is transferred to the exhaust collection device 40 along the exhaust delivery line 63. At this time, when the exhaust heat recovery apparatus 40 generates steam using exhaust gas, the steam turbine 50 can be operated.

When the energy is sufficiently secured through the operation of the steam turbine 50, the operation of the compressor 13 can be resumed. Since the compressor 13 consumes more energy than the liquefied gas pump 16 when the compressor 13 is restarted, the present invention resumes operation of the liquefied gas pump 16 for generating the blackout and replaces the steam turbine 50, instead of the gas turbine 30, And then restarts the compressor 13 to start the operation of the gas turbine 30.

Therefore, even if a blackout occurs, the entire system can be restored in a relatively short time, thereby ensuring system stability.

- Content of structural features

FIG. 2 is a partial side view of a ship according to an embodiment of the present invention, FIGS. 3 and 4 are sectional views of A and B in FIG. 2, FIG. 5 is a sectional view of C in FIG. 2, D of FIG.

FIG. 7 is a side view of a conventional ship, FIGS. 8 and 9 are side views of a ship according to an embodiment of the present invention, FIGS. 10 and 11 are sectional views of EE in FIG. 9, 1 is a side view of a ship according to an embodiment. 13 is a side view of a ship according to another embodiment of the present invention, and Fig. 14 is a sectional view of F-F in Fig.

2 to 14, a ship 100 according to an embodiment of the present invention includes a hull having an upper deck 110 and a plurality of liquefied gas storage tanks 10 provided in the hull, It can be a carrier.

At this time, an engine room 103, which is a space for installing the main engine 201, and a holding 105, which is a space for installing the liquefied gas storage tank 10, are provided in the lower part of the upper deck 110 May be provided. The engine room 103 is provided at the rear with an engine room partition 104. The hold 105 may be provided with a front partition wall 106 before and after the plurality of liquefied gas storage tanks 10, Or the double partition structure of the holding partition wall 106 and the engine room partition wall 104 can be partitioned into the engine room 103 and the hold 105. [

An engine casing 107 and a cabin 108 may be provided on the upper deck 110 in the hull. The vessel 100 according to the present invention may have a gas turbine 30 that is omitted from the engine room 103 and replaced with the main engine 201 outside the engine room 103, At this time, the outside means the engine casing 107.

The engine casing 107 is provided at the rear of the cabin 108 in the upper deck 110 of the hull to form a space protruding upward and a gas turbine 30 and an arrangement recovery device 40 are provided therein. Generally, an engine for propulsion (such as a turbine or a main engine 201) is provided in the engine room 103, but the present invention is not limited to the case where the gas turbine 30 for propulsion is an engine casing 107, Respectively.

The engine casing 107 is also provided with a gas combustion device 60. The gas turbine 30, the arrangement collection device 40 and the gas combustion device 60 can be positioned so as not to interfere with each other. For example, the array recovery device 40 is provided on the top of the gas turbine 30. This is for the purpose of delivering the exhaust discharged upward from the gas turbine 30 to the array recovery apparatus 40.

However, the gas combustion device (60) may be provided in front of the array recovery device (40). At this time, since the engine casing 107 is located behind the cabin 108, the arrangement recycling apparatus 40 can be provided farther from the cabin 108 than the gas combustion apparatus 60. This is because the array retrieving apparatus 40 can generate a relatively large noise compared with the operation of the gas combustion apparatus 60 during operation, thereby providing inconvenience to the boarding personnel residing in the cabin 108.

A funnel (not shown) is provided in the upper part of the engine casing 107, and the exhaust gas of the gas combustion device 60 and the exhaust gas of the gas turbine 30 can be discharged to the outside through the stack.

The engine casing 107 may be provided on the upper side of the mooring deck 111. The ship 100 is provided with a mooring deck 111 on the stern 101 for mooring and the mooring deck 111 is provided at a position lower than the upper deck 110. The present invention is applicable to a mooring deck 111 The engine casing 107 can be placed on the upper side of the mooring deck 111 while supporting the engine casing 107 by using the support stand 112. [ In this case, the lower surface of the engine casing 107 may be parallel to the height of the upper deck 110.

When the engine casing 107 is provided not only in the mooring deck 111 but only in the upper deck 110, the engine casing 107 is positioned forward from the stern 101 by the front-rear width of the mooring deck 111 . In this case, considering that the cabin 108 is disposed in front of the engine casing 107 and the liquefied gas storage tank 10 is disposed in front of the cabin 108, the engine casing 107 The total capacity of the liquefied gas storage tank 10 may not be sufficiently secured.

However, the present invention allows the mooring deck 111 to be a piloti structure with a support 112 and the engine casing 107 to be disposed above the mooring deck 111, Can be supported by the support base 112. At this time, various equipment (winch, choke, etc.) (not shown) for mooring can be placed in the mooring deck 111 below the engine casing 107.

Therefore, according to the present invention, as the engine casing 107 is disposed at the rear side adjacent to the stern 101, the entire capacity of the liquefied gas storage tank 10 can be enlarged while moving the cabin 108 rearward. At this time, the rear surface of the engine casing 107 may be positioned behind the stern boss 109.

The present invention is characterized in that an arrangement recycling apparatus 40 is provided in an engine casing 107 and a steam turbine 50 is provided in an engine room 103. In the steam turbine 50, The engine casing 107 can be placed on top of the mooring deck 111 and the upper deck 110 to connect the engine 51 to the engine casing 107. [ That is, the front surface of the engine casing 107 is located in front of the rear surface of the engine room 103, and a part of the lower surface of the engine casing 107 can overlap with a part of the upper surface of the engine room 103, (Indicated by a chain line in Fig. 2), the steam supply line 51 may be provided.

The rear surface of the engine casing 107 is positioned behind the rear surface of the engine room 103 so that only a part of the bottom surface of the engine casing 107 overlaps the top surface of the engine room 103, (Disposed at the rear side) of the engine room 103 so as to be displaced from the upper surface of the engine room 103.

The gas turbine 30 (the space occupied by the gas turbine 30) provided in the engine casing 107 may be a shape having a relatively long length on one side and a relatively short length on the other side. At this time, an intake duct 31 for sucking air is provided at one side in a long direction. However, the direction in which the intake duct 31 sucks air may vary depending on the arrangement of the gas turbine 30.

As shown in Fig. 3A, the gas turbine 30 may be provided such that the longitudinal direction is parallel to the lateral direction of the hull. In this case, the intake duct 31 may be provided to suck air in the direction from the port or starboard toward the center.

In this case, as shown in FIG. 3 (B), the gas turbine 30 is provided with an arrangement recovery device 40 and a gas combustion device 60 is provided in front of the arrangement recovery device 40, The gas combustion apparatus 60 may be provided in front of the gas turbine 30 and the array recovery apparatus 40.

By thus arranging the gas turbine 30 in the lateral direction, the front-rear width of the engine casing 107 can be reduced. Reducing the front and rear width of the engine casing 107 can lead to retraction of the cabin 108 and increase in the total capacity of the liquefied gas storage tank 10.

4 (A), the gas turbine 30 may be provided such that the longitudinal direction thereof is parallel to the longitudinal direction of the hull, and the intake duct 31 is arranged in a direction from the stern 101 to the front To suck air in the direction.

Although the gas turbine 30 may be centrally located to suppress the left / right rocking of the ship 100, the present invention may alternatively provide a longitudinally positioned gas turbine 30 on one side of the port or starboard side.

In other words, the gas turbine 30 is arranged shifted from the left and right center of the hull to the port or starboard side, and the intake duct 31 can suck air in the direction from the rear to the front. The gas turbine 30 is provided at the upper portion of the gas turbine 30 and the array recovery device 40. The gas turbine 60 may be provided at one side of the gas turbine 30 and the array recovery device 40 in the lateral direction.

Even when the gas turbine 30 is arranged as described above, the front and rear widths of the engine casing 107 are set to be larger than the front and rear widths of the gas turbine 30 in the longitudinal direction of the hull, The total capacity of the liquefied gas storage tank 10 can be increased.

The total capacity increase effect of the liquefied gas storage tank 10 can be compensated by the effect of reducing the lateral width of the hull and / or of densely deforming the hull, while maintaining the total capacity of the liquefied gas storage tank 10 have. The distance from the stern 101 to the engine room partition wall 104 in front of the engine room 103 may be reduced as the front and rear widths of the engine casing 107 decrease. In this case, the capacity of the liquefied gas storage tank 10 There is a margin for reducing the width while maintaining the width. Such contents will be described later with reference to FIG. 7 to FIG.

In the engine room 103, a steam turbine 50 may be provided. The engine room 103 and the engine casing 107 are vertically divided by the upper deck 110. The gas turbine 30 and the arrangement recovery device 40 are provided on the upper part of the upper deck 110, The turbine (50) is provided at the lower part of the upper deck (110). The upper portion of the upper deck 110 may be referred to as the outside of the hull. Therefore, the gas turbine 30 and the array recovery device 40 may be provided outside the hull, unlike the steam turbine 50.

The engine room 103 may have at least two decks 113, 114, 115, 116 spaced up and down including a deck 113 for supporting the steam turbine 50. At this time, the decks 113, 114, 115, and 116 are divided into upper and lower layers in the entire flat section of the constant height of the engine room 103.

7, when the main engine 201 is provided in the engine room 103, even if a deck is provided in the engine room 103 due to the size of the engine 201, Layer type, but it is only a form of a staging part that partially surrounds the main engine 201 only.

However, in the present invention, the gas turbine 30, which is the main engine for propelling instead of the main engine 201, is located inside the engine casing 107 in the upper deck 110, so that the engine room 103 is equipped with a steam turbine 50) is sufficient.

Thus, the engine room 103 may have decks 113, 114, 115, and 116 that divide the top and bottom of the engine room into different layers. The engine room 103 is provided with a switch board 91, a converter 92 and a motor 93 in addition to the steam turbine 50. The engine room 103 is provided with a second deck 113, A deck 115 may be provided. That is, the second deck 113, the third deck 114, the fourth deck 115, and the tank top 116 may be sequentially disposed downward with respect to the upper deck 110.

The second deck 113 may be spaced downward from the upper deck 110 and may be provided at the same height as the mooring deck 111 and may be provided with a steam turbine 50. A steam supply line 51 for supplying steam from the exhaust heat recovery unit 40 is connected to the steam turbine 50. The steam supply line 51 penetrates the upper deck 110 of the engine room 103 And may be extended to the arrangement recovery device 40 located inside the engine casing 107. The lower surface of the engine casing 107 and the upper surface of the engine room 103 may be overlapped at least partially.

The third deck 114 is spaced downward from the second deck 113, and a switch board 91 may be provided. The switch board 91 controls the energy generated in the gas turbine 30 and the steam turbine 50. Also, the power generation engine 70 may be disposed in the third deck 114.

Referring to FIG. 6, oil storage tanks 20 may be provided on both sides of the second deck 113 and / or the third deck 114. However, the oil storage tank 20 may be spaced apart from the side shellboard 118 by the coffer dam 23 in order to prevent oil leakage during breakage of the side shellboard 118.

The fourth deck 115 is spaced downward from the third deck 114, and a converter 92 may be provided. The converter 92 is connected to the switch board 91 to convert energy into a consumable state.

The tank top 116 is spaced downwardly from the fourth deck 115 and may be a deck at a height where the liquefied gas storage tank 10 is placed. The tank top 116 is a deck that is spaced apart from the bottom 117 by a predetermined height and prevents seawater from entering the interior of the bottom 117 when the bottom 117 is broken.

The tank top 116 includes a motor 93 that receives energy from the converter 92 and rotates the rotary shaft 94. The propeller is provided at the rear end of the rotary shaft 94 so that the motor 93 can generate propulsion by turning the propeller using the energy generated by the gas turbine 30 and the steam turbine 50.

Referring to Figure 6, the gas turbine 30 has a hot section 32, which is a hot section, the hot section 32 being the core drive of the gas turbine 30, . At this time, the hot section 32 may be provided interchangeably.

In order to remove and replace the hot section 32 from within the gas turbine 30, the present invention may include a beam 33 and a hatch 34. The beam 33 may be provided on the upper side of the gas turbine 30 to form a path for moving the hot section 32.

The beam 33 may be an I beam and the beam 33 may be provided with a trolley (not shown) that is movable along the beam 33 and that lifts and transports the hot section 32. When the hot section 32 of the gas turbine 30 needs to be replaced, the trolley lifts the hot section 32 of the gas turbine 30 and moves along the beam 33 to transport the hot section 32 .

The hatch 34 is provided above the gas turbine 30 so as to be displaced from the beam 33 to discharge the hot section 32 to the outside. However, the hatch 34 may be provided at a position deviated from the direct room of the gas turbine 30 because the arrangement recovery device 40 is provided on the gas turbine 30.

In other words, since the arrangement recovery device 40 is provided in the upper right chamber of the gas turbine 30, the hot section 32 can not be taken out upwardly if the hatch 34 is placed directly above the gas turbine 30. The hatch 34 may be provided at a position displaced above the gas turbine 30 and the beam 33 may be provided to form a path of travel from the upper chamber of the gas turbine 30 to a position adjacent the hatch 34 have.

The beam 33 may be provided on the upper side of the gas turbine 30 in the engine casing 107 and the hatch 34 may be provided on the upper surface of the engine casing 107 at a position displaced from the beam 33. At this time, the engine casing 107 may have a structure in which a plurality of decks are provided similar to the engine room 103 in order to support the arrangement recovery device 40. The hatch 34 is formed in the upper surface of the engine casing 107, So that the inside of the engine casing 107 in which the gas turbine 30 is provided can communicate with the outside.

Replacement of the hot section is done as follows. First, a trolley is located on a beam 33 provided above the gas turbine 30, and the trolley lifts the hot section 32 from the gas turbine 30.

The trolley then moves to a position adjacent to the hatch 34 along a travel path formed by the beam 33. Since the beam 33 and the hatch 34 are arranged to be offset from each other, the hot section suspended from the trolley is pushed by the force of a person or the like, and is positioned at a position off the beam directly below the beam, Can be put down in position.

That is, the trolley may place the hot section down the hatch, which is off the travel path, but in this case a person or other equipment may be required to assist.

Or the trolley may be provided in plural and a plurality of trolleys may be transported together to transport the hot section so that the hot section is lifted between the two trolleys without the beam 33 and the hatch 34 Or the like. Thus, in this embodiment, the hot section can also be lowered below the hatches off the movement path by this method.

When at least one of the hatches 34 is completely opened, a shore crane provided outside the engine casing 107 lifts the hot section 32, And can be discharged to the outside. Of course, the method of installing the new hot section 32 in the gas turbine 30 may be reversed.

Hereinafter, the overall shape of the ship 100 of the present invention will be described with reference to Figs. 7 to 14. Fig.

Referring to FIG. 7, in the conventional vessel 200, the main engine 201 (ME-GI engine or the like) is provided in the engine room 103, so that the front and rear width of the engine room 103 must be sufficiently long. Also, since the engine casing 107 is placed on the upper deck 110 rather than the mooring deck 111, the position of the cabin 108 has to be sufficiently forward from the stern 101.

8, the vessel 100 of the present invention changes the propulsion by the main engine 201 provided in the engine room 103 to electric propulsion by the gas turbine 30, while the gas turbine 30 Is provided in the engine casing 107, the equipment disposed in the engine room 103 can be reduced. The gas turbine 30 and the arrangement recovery device 40 are provided outside the engine room 103 and the steam turbine 50 is provided inside the engine room 103 so that the engine room 103 must be secured Can be reduced.

In this case, the front-rear width of the engine room 103 can be greatly reduced while replacing the main engine 201 with the gas turbine 30. For example, the front-rear width of the engine room 103 is about 10 to 25% To 10 m). That is, as shown in FIG. 8, there is a space available between the engine room 103 and the hold 105.

At this time, the present invention has the following three embodiments according to the method of utilizing the free space.

9 and 10, the ship 100 of the present invention is configured such that the front and rear widths of the engine room 103 and the left and right widths of the hull are maintained at a constant value while maintaining the storage capacity of the liquefied gas storage tank 10. [ Can be reduced.

In this case, the distance between the last-standing holding partition wall 106 and the foremost-side holding partition wall 106 expands while changing the propulsion by the main engine 201 to electric propulsion by the gas turbine 30. Therefore, there is a possibility that the storage capacity of the liquefied gas storage tank 10 is enlarged.

However, the present embodiment can reduce the lateral width of the ship instead of maintaining the storage capacity of the liquefied gas storage tank 10 without enlarging it. 9, the longitudinal length of the liquefied gas storage tank 10 may increase as the longitudinal length of the hold 105 increases. However, as shown in FIG. 10, the lateral width of the liquefied gas storage tank 10 The total storage capacity of the liquefied gas storage tank 10 can be maintained.

At this time, in this embodiment, the width of the hull is reduced, so that the hull can have a slim shape. Therefore, the present embodiment can drastically reduce the resistance generated during the propulsion of the hull, thereby reducing fuel consumption.

9 and 11, the ship 100 of the present invention changes the propulsion by the main engine 201 to electric propulsion by the gas turbine 30, and the storage capacity of the liquefied gas storage tank 10 The front and rear width of the engine room 103 and the squareness coefficient of the hull can be lowered. This means that the hull is thinner and you can get a resistance reduction effect similar to reducing the width of the hull.

According to FIG. 9, although the present embodiment is shown to change the propulsion by the main engine 201 to electric propulsion by the gas turbine 30 and maintain the overall length of the hull, it is also possible to reduce the lateral width of the hull and / Or reduce the squareness of the hull while reducing the length of the hull.

When the entire length of the hull is maintained, since the entire center of gravity of the liquefied gas stored in the plurality of liquefied gas storage tanks 10 moves backward (G0-> G1), aft of the stern 101 may occur. Therefore, in consideration of the stability of the hull, the overall length of the hull can be reduced.

12, the ship 100 of the present invention changes the propulsion by the main engine 201 to electric propulsion by the gas turbine 30, and the propulsion of the liquefied gas storage tank 10 The front and rear width of the engine room 103 and the total length of the hull can be reduced while maintaining the storage capacity.

In this case, the cross section may be the same as that of the conventional vessel 200 shown in Fig. 7, so that the resistance reduction effect may be smaller than that of the previous embodiment. However, since the entire center of gravity of the liquefied gas stored in the plurality of liquefied gas storage tanks 10 (G0 - > G2), the distance from the center of gravity to the bow 102 is maintained and the horizontal distance from the center of gravity to the stern 101 is reduced so that the stern 101 can not be trimmed have.

13 and 14, the ship 100 of the present invention changes the propulsion by the main engine 201 to electric propulsion by the gas turbine 30, and maintains the electric field of the hull The front and rear width of the engine room 103 can be reduced and the storage capacity of the liquefied gas storage tank 10 can be increased.

That is, in this case, the present embodiment utilizes the reserved space secured by the decrease in the front-rear width of the engine room 103 for the increase of the liquefied gas storage tank 10, thereby increasing the storage capacity for the linear type having the same propelling performance The efficiency can be improved.

Of course, the above-mentioned three embodiments can be combined and can be variously determined according to the shape of the bow 102, the stern 101 of the ship 100, the navigational conditions to be operated, the requirements of the ship owner, and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be apparent to those skilled in the art that various combinations and modifications may be made without departing from the scope of the present invention. Therefore, it should be understood that the technical contents related to the modifications and applications that can be easily derived from the embodiments of the present invention are included in the present invention.

1: Electric propulsion system based on gas turbine 10: Liquefied gas storage tank
20: Oil storage tank 30: Gas turbine
40: Array recovery device 50: Steam turbine
60: Gas combustion device 70: Power generation engine
80: Control section 90: Power distribution board
100: Ship 200: Conventional ship

Claims (8)

A hull with an upper deck;
An engine room provided below the upper deck;
A gas turbine generating electricity for propulsion of the hull;
An arrangement recovery device for recovering exhaust heat to generate steam; And
And a steam turbine for generating electricity using steam generated in the apparatus for collecting arrays,
Wherein the gas turbine and the exhaust gas recirculation device are provided outside the engine room,
The steam turbine is provided in the engine room,
Wherein the engine room is a multi-layer structure in which a plurality of decks for dividing upper and lower portions into different layers in a flat section of a predetermined height are provided in the upper and lower portions. The apparatus of claim 1,
Wherein the upper and lower portions are divided into different layers in the entire flat section of the engine room. The method according to claim 1,
A switch board for controlling energy generated from the gas turbine and the steam turbine;
A converter connected to the switch board to convert energy; And
Further comprising a motor that receives energy from the converter and rotates the rotating shaft. The engine of claim 3,
A tank top provided with the motor;
A fourth deck provided with at least one of the converter and the switch board;
A third deck provided with at least one of the converter and the switch board; And
And a second deck on which the steam turbine is installed. 5. The method of claim 4,
Further comprising a power generation engine that generates power by consuming oil supplied from an oil storage tank. 6. The power generation system according to claim 5,
Wherein the switch board is provided on the same deck as the switch board. 6. The method of claim 5,
Wherein the converter is provided in the fourth deck,
Wherein the switch board is provided in the third deck,
And the power generation engine is provided in the third deck. The method according to claim 1,
Further comprising an engine casing provided on an upper portion of the upper deck,
Wherein the gas turbine and the arrangement recovery device are provided in the engine casing.

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