KR20180087113A - A Sea Chest Apparatus and Vessel having the same - Google Patents

Abstract

A sea chest apparatus of the present invention comprises: a hull; a first sea chest disposed on the portside in the lower portion of the hull and allowing inflow of introduced sea water; a second sea chest disposed on the starboard in the lower portion of the hull and allowing the inflow of the introduced sea water; a left sea water discharge hole disposed on the portside in the lower portion of the hull and discharging discharge sea water after being used in the hull; a right sea water discharge hole disposed on the starboard in the lower portion of the hull and discharging the discharge sea water after being used in the hull; and a control unit controlling the flow of the introduced sea water in the first and the second sea chests and the discharge sea water in the left and the right sea water discharge holes.

Description

[0001] The present invention relates to a sea chest apparatus and a vessel including the sea chest apparatus,

The present invention relates to a seed chest apparatus and a vessel including the same.

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 less under 1 atm of the main component. The volume of liquefied methane is about 1/600 of the volume of methane in a gaseous state in a standard state, Is 0.42, which is about one half of the specific gravity of crude oil.

LNG is liquefied with ease of transportation and used after vaporizing at the place of use after transportation. However, due to the risk of natural disasters and terrorism, it is feared to install LNG vaporization equipment onshore.

As a result, in place of the conventional liquefied natural gas regeneration system installed on the land, a system for supplying natural gas that is vaporized on the land by installing a regeneration device on an LNG carrier carrying the liquefied natural gas Is in the spotlight.

In the LNG regasifier system, the LNG stored in the liquefied gas storage tank is pressurized by the booster pump and sent to the LNG vaporizer, which is vaporized by the LNG vaporizer and sent to the onshore consumer. Here, a large amount of energy is required in the process of heat exchange in which the temperature of the LNG is increased on the LNG vaporizer. Therefore, in order to solve the problem that the energy used in this process is wasted due to inefficient exchange, various heat exchange techniques for efficient regeneration have been studied.

It is an object of the present invention to provide a sea chest apparatus and a ship including the sea chest apparatus capable of constantly maintaining the temperature of sea water introduced into a sea chest.

A seed chest apparatus according to the present invention includes: a ship; A first seed chest disposed at a port on the lower portion of the hull and into which inflow water flows; A second seed chest disposed on the starboard bottom of the hull and into which the incoming seawater flows; A left seawater discharge port disposed at a port of the lower portion of the hull and discharging discharged water after being used in the hull; A right seawater discharge port disposed on the starboard below the hull and discharging the discharged seawater after being used in the hull; And a control unit for controlling the flow of the discharged seawater at the first and second seed chests and the discharged seawater at the left and right seawater discharge openings.

Specifically, the control unit may control the inflow or outflow of the inflowing seawater and the discharge water at a position where the inflow seawater and the discharge water are opposite to each other with respect to the hull.

Specifically, when the inflowing seawater is introduced from the first seed chest, the control unit controls to discharge the discharged seawater through the right seawater discharge port, and when the inflowing seawater flows in the second seed chest, So that the discharged seawater can be discharged through the left seawater discharge port.

Specifically, the first seed chest may be divided into a plurality of segments.

Specifically, the first seed chest may include a stern seed chest divided and formed in the stern direction and a player seed chest divided and formed in the forward direction.

Specifically, a plurality of seawater pumps for supplying the inflowing seawater introduced into the first and second seed chests to the in-hull seawater utilization devices; And a seawater supply line for connecting the seawater pump and the first and second seed chests, wherein the seawater supply line is connected to the seawater pump when the seawater pump is connected to the stern seed chest or the aft seed chest, Respectively.

Specifically, the inflow seawater and the discharge water may be seawater discharged and used in a regeneration apparatus for regenerating the liquefied gas.

Specifically, it may be a vessel characterized by including the seed chest device.

The sea chest apparatus and the ship including the sea chest apparatus according to the present invention have an effect that the sea chest is disposed on both sides and the sea water discharge side and the sea water inflow side are made different from each other, have.

1 is a conceptual view of a ship including a gas regeneration system according to an embodiment of the present invention.
2 is a top view of a third deck in the engine compartment of a ship including a gas regeneration system in accordance with an embodiment of the present invention.
3 is a plan view of a fourth deck in the engine compartment of a vessel including a gas regeneration system according to an embodiment of the present invention.
4 is a top view of a floor deck in an engine compartment of a ship including a gas regeneration system in accordance with an embodiment of the present invention.
5 is a conceptual diagram of a seawater supply device on a floor deck of a vessel including a gas regeneration system according to an embodiment of the present invention.
6 is a plan view of a tank top deck in an engine compartment of a vessel including a gas regeneration system in accordance with an embodiment of the present invention.
7 is a conceptual diagram of a gas regeneration system according to an embodiment of the present invention.
FIG. 8 is a conceptual view showing in detail the construction of a common line in the gas regeneration system according to the embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, the liquefied gas may be used to encompass all gaseous fuels generally stored in a liquid state, such as LNG or LPG, ethylene, ammonia, etc. In the case where the gas is not in a liquid state by heating or pressurization, . This also applies to the evaporative gas. In addition, LNG can be used to encompass both NG (natural gas), which is a liquid state, and NG, which is a supercritical state for the sake of convenience. The LNG may be used to mean not only a gas state evaporation gas but also a liquefied evaporation gas .

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

FIG. 1 is a conceptual view of a ship including a gas regeneration system according to an embodiment of the present invention, FIG. 2 is a plan view of a third deck in an engine room of a ship including a gas regeneration system according to an embodiment of the present invention, 3 is a plan view of a fourth deck in an engine compartment of a ship including a gas regeneration system according to an embodiment of the present invention; Fig. 4 is a top view of a floor in an engine room of a ship including a gas regeneration system according to an embodiment of the present invention; 5 is a conceptual view of a seawater supply device on a floor deck of a vessel including a gas regeneration system in accordance with an embodiment of the present invention, and Fig. 6 is a schematic view of a gas regeneration system including a gas regeneration system according to an embodiment of the present invention A top view of the tank top deck in the engine room of the ship.

1 to 6, a ship 1 including a gas regeneration system 2 according to an embodiment of the present invention includes a liquefied gas storage tank 10, a feeding pump 20, (2) is installed, which includes a steam generator (30), a vaporizer (40), a seawater heat exchanger (41), a heating medium pump (42), a heating medium storage tank (43), and a seawater pump 1 has a hull (not shown) composed of a bow portion 101, a central portion 102, a stern portion 103, an upper deck 104 and a bottom portion 105.

The ship 1 including the gas regeneration system 2 according to the embodiment of the present invention is configured such that the power produced by the propulsion engine E of the engine room ER disposed in the stern section 103 is transmitted to the propeller shaft S is propelled by the propeller P and operated. At this time, the power generated by the propulsion engine E is converted into electric power by the generator, electric power is transmitted to the propulsion motor Mo, and the propeller shaft S is rotated by the rotational force generated by the propulsion motor Mo, (P) can be operated.

In order to enable the liquefied gas to be re-fed at sea and supplied to the land terminal, the ship is provided with a liquefied gas regeneration system (not shown) provided with a gas regeneration system (2) Ship (LNG RV) or floating liquefied gas storage and regasification facility (FSRU).

Hereinafter, the ship 1 including the gas regeneration system 2 according to the embodiment of the present invention will be described with reference to Figs. 1 to 6. Fig.

Before describing the ship 1 including the gas regeneration system 2 according to the embodiment of the present invention, the gas regeneration system 2 (FIG. 2) disposed in the vessel 1 with reference to FIGS. 7 and 8, ) And the basic flow paths for organically connecting these individual structures will be described. Here, the passage is a passage through which the fluid flows, and may be a line. However, the present invention is not limited thereto.

FIG. 7 is a conceptual diagram of a gas regeneration system according to an embodiment of the present invention, and FIG. 8 is a conceptual diagram illustrating the construction of a common line in a gas regeneration system according to an embodiment of the present invention.

7 and 8, in the embodiment of the present invention, the liquefied gas supply line L1, the regeneration line L2, the heating medium circulation line L3, the seawater line L4, the evaporation gas supply line L5, A liquefaction gas storage tank 10, a feeding pump 20, a booster pump 21, a suction drum 30, a vaporizer 40, a first customer 70, and an evaporative gas compressor 80. Here, valves (not shown) capable of adjusting the opening degree may be installed in each line, and the supply amount of the evaporation gas or the liquefied gas may be controlled according to the opening degree control of each valve.

The liquefied gas supply line L1 connects the liquefied gas storage tank 10 and the suction drum 30 and has a feeding pump 20 to supply the liquefied gas stored in the liquefied gas storage tank 10 to the feeding pump 20 To the suction drum (30). At this time, the liquefied gas supply line L1 may be connected to the suction drum 30 and may be branched at the upstream of the suction drum 30 and directly connected to the regasification line L2.

The regeneration line L2 connects the suction drum 30 and the first consumer 70 and includes a boosting pump 21 and a gasification unit 40 so that the liquefied gas temporarily stored in the suction drum 30, The liquefied gas directly supplied from the gas supply line L1 can be pressurized by the booster pump 21 and regenerated by the gasification unit 40 to be supplied to the first customer.

The heating medium circulation line L3 circulates the vaporizing section 40, the sea water heat exchanger 41 (shown in FIG. 1) and the heating medium pump 42 (shown in FIG. 1) 40, the seawater heat exchanger 41, and the heating medium pump 42). Here, the heat medium circulation line L3 may be formed so that its diameter is smaller than the sea water line L4.

The heating medium circulation line L3 includes vaporizers 401 to 404 constituted by four skids on four trains 401a to 404a and respective heating mediums 401 to 404 connected to the sea water heat exchanger 41 and the heating medium pump 42. [ The circulation lines L3a to L3d can be constructed as a single common line. At this time, the vaporizer 40 is provided with first to fourth vaporizer skids 401 to 404 on the first to fourth trains 401a to 401d, and the first to fourth skids 401 to 404, And the branched heat medium circulation lines L3a to L3d branched from the heat medium circulation line L3 may be connected to the heat medium circulation line L3.

At this time, the heating medium supply line L3 is formed in such a manner that only two heating medium supply lines L3, which are common lines, pass through the upper deck 104, so that the durability of the stern 103 or the upper deck 104 of the central portion 102 There is an effect of improving the system reliability by reducing the possibility of leaking heat medium.

In addition, the heating medium supply line L3 can construct additional lines in parallel, thereby ensuring a sufficient flow rate of the glycol water that can be accommodated by one heating medium supply line L3. In this case, the number of lines passing through the upper deck 104 of the stern section 103 may be four.

The seawater line L4 is connected to the left discharge hole LH (shown in FIG. 5) or the right discharge hole (shown in FIG. 5) via the sea chest SC (shown in FIG. 5) and the sea water heat exchanger 41 5) and a seawater heat exchanger 41 (shown in Fig. 1), and is connected to the seawater pump 51 through the seawater pump 51, Can be supplied to the heat exchanger (41). Here, the sea water line L4 may be formed to have a diameter larger than the heat medium circulation line L3 and to apply a material having corrosion resistance to the inside thereof.

The evaporation gas supply line L5 connects the liquefied gas storage tank 10 and the suction drum 30 and includes an evaporation gas compressor 80 to evaporate the evaporation gas generated in the liquefied gas storage tank 10 into the evaporation gas Can be supplied to the suction drum (30) by being pressurized by the compressor (80). At this time, the evaporation gas supply line L5 may be connected to the lower side of the suction drum 30.

Hereinafter, the individual configurations that are organically formed by the above-described respective lines L1 to L5 to implement the gas regeneration system 2 will be described.

The liquefied gas storage tank 10 stores the liquefied gas to be supplied to the first customer. The liquefied gas storage tank 10 must store the liquefied gas in a liquid state, at which time the liquefied gas storage tank 10 may have the form of a pressure tank.

Here, the liquefied gas storage tank 10 is disposed inside the hull, and four liquefied gas storage tanks 10 may be formed in front of the engine room ER, for example. In addition, the liquefied gas storage tank 10 is not particularly limited to various types such as a membrane-type tank or an independent tank, for example.

The liquefied gas storage tank 10 can be provided with a coffer dam 106 between each of the liquefied gas storage tanks 10 and between the engine room ER and the liquefied gas storage tank 10, May be disposed.

The feeding pump 20 is provided on the liquefied gas supply line L1 and is provided inside or outside the liquefied gas storage tank 10 to supply the liquefied gas stored in the liquefied gas storage tank 10 to the suction drum 30, .

Specifically, the feeding pump 20 is provided between the liquefied gas storage tank 10 and the suction drum 30 on the liquefied gas supply line L1, and supplies the liquefied gas stored in the liquefied gas storage tank 10 to the primary And can be supplied to the suction drum 30 by pressurization.

The feeding pump 20 can pressurize the liquefied gas stored in the liquefied gas storage tank 10 to 6 to 8 bar and supply it to the suction drum 30. [ Here, the feeding pump 20 may pressurize the liquefied gas discharged from the liquefied gas storage tank 10 so that the pressure and the temperature may be somewhat higher, and the pressurized liquefied gas may still be in a liquid state.

In this case, the feeding pump 20 may be a submergible pump when it is provided inside the liquefied gas storage tank 10 and may be a pump that is stored in the liquefied gas storage tank 10 when it is installed outside the liquefied gas storage tank 10. It may be provided at a position inside the hull lower than the level of the liquefied gas and may be a centrifugal pump.

The boosting pump 21 may be provided between the suction drum 30 and the evaporator 40 on the liquefied gas supply line L1 and may be provided between the suction pump 30 and the suction drum 30, The pressure of the liquefied gas supplied from the pressurizing unit 40 may be increased to 50 to 120 bar.

The boosting pump 21 can pressurize the liquefied gas in accordance with the pressure demanded by the first customer 70, and can be configured as a centrifugal pump. Here, the boosting pump 21 may be provided above the upper deck 104 of the central portion 102.

The suction drum 30 may be connected to the liquefied gas supply line L1 to receive the liquefied gas from the liquefied gas storage tank 10 and temporarily store the liquefied gas.

Specifically, the suction drum 30 can receive the liquefied gas stored in the liquefied gas storage tank 10 from the feeding pump 20 through the liquefied gas supply line L1, and temporarily stores the supplied liquefied gas The liquefied gas can be separated into a liquid phase and a vapor phase, and the separated liquid phase can be supplied to the booster pump 21.

That is, the suction drum 30 temporarily stores the liquefied gas to separate the liquid phase and the vapor phase, and supplies the complete liquid phase to the boosting pump 21 so that the boosting pump 21 satisfies the effective suction head NPSH , Thereby preventing cavitation in the boosting pump (21).

The suction drum 30 may be connected to the evaporation gas supply line L5 to temporarily store the evaporation gas generated in the liquefied gas storage tank 10.

Specifically, the suction drum 30 can receive and temporarily store the evaporated gas generated from the liquefied gas storage tank 10 from the evaporative gas compressor 80 through the evaporation gas supply line L5.

Thus, the suction drum 30 can recycle the liquefied gas temporarily supplied from the liquefied gas supply line L1 and the evaporation gas temporarily supplied from the evaporation gas supply line L5 by heat exchange with each other. Here, the suction drum 30 can be formed in a pressure vessel type capable of withstanding pressure and can withstand 6 to 8 bar or 6 to 15 bar.

Therefore, the suction drum 30 is supplied with the evaporation gas and the liquefied gas through the evaporation gas compressor 80 and the feeding pump 20 at a pressure of about 6 to 8 bar (or 6 to 15 bar) The recondensation efficiency is improved more than that of the liquefied gas, the recondensed state is maintained while maintaining the pressure, and the compressed air is supplied to the booster pump 21 to lower the compression load of the booster pump 21.

At this time, the suction drum 30 is provided with a spray part (not shown) and a packing part (not shown) to effectively recondense the liquefied gas and the evaporated gas during temporary storage.

The spray part may be formed on the upper side of the packing part, extending from the distal end of the liquefied gas supply line L1 to the inside of the suction drum 30, and injects the liquefied gas supplied through the liquefied gas supply line L1 into the packing part .

The spray portion can increase the contact area between the liquefied gas and the evaporated gas by spraying the liquid liquefied gas, and can perform a role similar to the packing portion.

The packing part may be provided in the center of the suction drum 30 and may have a surface area where the liquefied gas supplied onto the liquefied gas supply line L1 and the evaporated gas supplied onto the evaporated gas supply line L5 contact each other It is possible to form a member such as gravel inside to widen it. That is, the packing part forms a large number of voids through the gravel formed therein, and the area in which the liquefied gas flows through these voids and is in contact with the evaporation gas can be increased.

Through this, the packing part can increase the heat exchange efficiency between the liquefied gas and the evaporated gas to improve the recondensability.

Here, the suction drum 30 is connected to the liquefied gas supply line L1 at the upper position with reference to the packing portion and connected to the evaporation gas supply line L5 at the lower position to utilize the liquidity and the fluidity of the vapor phase to the maximum . Further, the suction drum 30 may be provided on the upper side of the upper deck 104 of the central portion 102.

The vaporizing section 40 is provided on the regasification line L2 and can re-vaporize the high-pressure liquefied gas discharged from the booster pump 21.

Specifically, the vaporizing unit 40 is provided on the regasification line L2 between the first customer 70 and the boosting pump 21 to vaporize the high-pressure liquefied gas supplied from the boosting pump 21, 1 The customer (70) can supply the desired state.

The vaporizing unit 40 supplies the heating medium through the heating medium circulating line L3 and heat-exchanges the heating medium with the liquefied gas to vaporize the liquefied gas and circulate the heating medium that has been heat-exchanged with the liquefied gas through the heating medium circulating line L3.

The vaporization unit 40 may include a seawater heat exchanger 41 and a steam heat exchanger (not shown) on the heating medium circulation line L3 to continuously supply a heat source to the heating medium, So that the heat medium can be circulated to the heat medium circulation line L3.

At this time, the vaporizing unit 40 may use a non-explosive material such as Glycol Water, Sea Water, Steam, or engine exhaust gas as a heating medium for vaporizing the liquefied gas, The liquefied gas can be supplied to the first customer 70 without pressure fluctuation.

Here, the vaporizing section 40 may be disposed above the upper deck 104 of the central section 101, and the seawater heat exchanger 41, the steam heat exchanger, and the heating medium pump 42 may be modularized, As shown in FIG. For example, the seawater heat exchanger 41, the steam heat exchanger, and the heating medium pump 42 may be modularized and disposed inside the hull, preferably inside the engine room ER.

An example in which the seawater heat exchanger 41, the steam heat exchanger, and the heating medium pump 42 are disposed inside the engine room ER will be described later with reference to FIG. 1 through FIG.

The first consumer 70 can supply and consume the liquefied gas vaporized by the vaporizing unit 40. Here, the first customer 70 may be a land terminal installed on the land, or a maritime terminal floated on the sea, by vaporizing the liquefied gas and supplying and using the liquefied gas in the gas phase.

In the embodiment of the present invention, a second customer (not shown) may be further included.

The second customer uses the evaporated gas generated from the liquefied gas storage tank 10 as a fuel. In other words, the second customer needs evaporation gas and can be driven using the same as a raw material. The second customer may be a generator (e.g., a DFDG, a gas-fired unit (GCU)), but is not limited to a boiler.

Specifically, the second customer is connected to an evaporation gas branch line (not shown) branched off on the evaporation gas supply line L5 downstream of the evaporation gas compressor 80 to receive the evaporation gas, and the evaporation gas compressor 80 To a low pressure of about 1 to 6 bar (up to 15 bar).

In addition, the second demand point can be a heterogeneous fuel engine in which a different fuel can be used, so that not only evaporation gas but also oil can be used as fuel, but evaporation gas or oil is selectively supplied . This is to prevent the mixture of two materials having different combustion temperatures from being mixed, thereby preventing the efficiency of the second customer from deteriorating.

Here, the second demand point may be provided in the engine room ER provided inside the stern section 103, and the second demand point may be connected to the steam heat exchanger through a steam line (not shown).

When the second user is a gas combustion apparatus, the evaporated gas burned in the gas combustion apparatus can be discharged to the outside through the vent mast (V) disposed on the upper deck (104) of the hull.

The evaporative gas compressor (80) can pressurize the evaporation gas generated in the liquefied gas storage tank (10) and supply it to the suction drum (30) or the second customer. Here, the evaporative gas compressor 80 may be disposed in a compressor room (not shown), and a motor room (not shown) may be disposed on the side of the compressor room.

Specifically, the evaporative gas compressor 80 is provided on the evaporation gas supply line L5 to pressurize the evaporation gas generated in the liquefied gas storage tank 10 to about 6 to 8 bar or 6 to 15 bar, ) Or supply it to the second customer. At this time, the second customer can receive the evaporative gas through the evaporative gas branch line branched from the evaporative gas supply line L5.

A plurality of evaporation gas compressors 80 may be provided to press the evaporation gas at multiple stages. For example, three evaporation gas compressors 80 may be provided to pressurize the evaporation gas at three stages. The example three-stage compressor is only one example and is not limited to the three stages.

In an embodiment of the present invention, an evaporative gas cooler (not shown) may be provided at each end of the evaporative gas compressor 80. When the evaporation gas is pressurized by the evaporation gas compressor 80, the temperature can also be raised according to the pressure increase. Therefore, in this embodiment, the evaporation gas cooler can be used to lower the temperature of the evaporation gas again. The evaporative gas cooler may be installed in the same number as the evaporative gas compressor 80, and each evaporative gas cooler may be provided downstream of each evaporative gas compressor 80.

Further, in the embodiment of the present invention, when the evaporation gas compressor 80 is provided in parallel and the amount of the evaporation gas generated in the liquefied gas storage tank 10 rapidly increases, When one of the evaporator 80 and the evaporator 80 malfunctions or shut down, the other evaporator gas compressor 80 can be operated to efficiently receive and process the evaporated gas generated in the liquefied gas storage tank 10 . Here, the evaporative gas compressor (80) may be provided above the upper deck (104) of the central portion (102).

In the following description, various configurations of the apparatus as well as the seawater heat exchanger 41, the steam heat exchanger and the heating medium pump 42, the heating medium storage tank 43, and the seawater pump 51 are disposed inside the engine room ER Will be described in detail with reference to Figs. 1 to 6.

In the embodiment of the present invention, the existing boiler installed in the engine room ER is removed and the heating medium supply device such as the seawater heat exchanger 41, the heating medium pump 42, the heating medium storage tank 43, ) Of the engine (E).

As the boiler is removed, a space for moving the engine E in the stern direction is ensured in the fourth deck D4 and a seawater heat exchanger 41 and a heat source pump 42 are provided in front of the engine E Space to be placed is secured.

In addition, since the heating medium supply device is used as the non-explosive heat, it can be disposed in the ship, and it can be disposed in the engine room ER among the inside of the ship, so that a large space can be secured on the upper deck 104, So that the space utilization of the vehicle can be increased.

At this time, the engine E is a system in which electric power is transmitted to the motor Mo rather than directly connected to the propeller shaft S as a heterogeneous fuel engine DFDE, and the motor Mo is directly connected to the shaft S. .

The engine room ER is formed with an upper deck 104 on the upper side and a second deck (D2), a third deck (D3), a third deck A deck may be formed in the order of a fourth deck (D4), a floor deck (D5), and a tank top deck (D6).

A cabin C and a chute Ch are formed on the upper side of the upper deck 104 of the engine room ER and a regeneration unit room 2000 may be disposed in front of the cabin C. [

The cabin C can secure a sufficient view of the cabin C because the reverification unit room 2000 is located at the center 102 of the cabin so that the height of the cabin C is higher than that of the cabin C And a cargo switch board room (2001) for controlling power to be supplied to the regeneration unit room 2000 may be installed therein.

The stack (Ch) is disposed behind the cabin (C), and can exhaust exhaust gas or internal air generated in the engine room (ER) to the outside.

The regeneration unit room 2000 can accommodate the boosting pump 21, the suction drum 30, the first to fourth vaporizers 401 to 404 of the evaporator 40, and the evaporative gas compressor 80 , A facility for treating liquefied gas and may be formed to be hermetically sealed from the outside.

The second deck D2 is disposed directly below the upper deck 104, and various devices installed in the other engine room ER can be disposed.

The third deck D3 (see FIG. 2) is disposed directly below the second deck D2, and the transfer room TR and the convert room CVR can be disposed. The engine E and the seawater heat exchanger 41 Can communicate with each other. At this time, the transfer room (TR) and the convert room (CVR) may be disposed closer to the stern side so that sufficient space is provided for the seawater heat exchanger (41) to be disposed in the fore direction. Here, the transfer room (TR) and the convert room (CVR) can convert or process the electric power generated by the engine (E) and supply it to the power consuming place.

The force deck D4 (see Fig. 3) is disposed directly under the third deck D3, and the engine E, the seawater heat exchanger 41, and the heating medium pump 42 can be disposed. At this time, if a steam heat exchanger (not shown) is additionally provided in the gas regeneration system 2, the steam heat exchanger may be disposed on the force deck D4.

Four engines E may be disposed closer to the stern side, for example, and may have a height higher than the side deck D3 over the force deck D4. At this time, the third deck D3 can be formed with a hole so that the engine E can be communicated.

Four seawater heat exchangers 41 may be disposed to be close to the fore-going direction and have a high height to form the tertiary deck D3 over the force deck D4. At this time, a hole may be formed in the third deck D3 so that the seawater heat exchanger 41 can communicate with the third deck D3.

The seawater heat exchanger 41 is disposed on the seawater line L4 and the heating medium circulation line L3 and exchanges heat between the seawater supplied through the seawater line L4 and the heat medium supplied through the heat medium circulation line L3 , And can transfer the heat source of seawater to the heating medium.

The seawater heat exchanger 41 can be disposed on the POSDECK D4 in the internal space of the engine room ER at a position adjacent to the seawater outlet (not shown) and also disposed on the sea surface or below the sea surface .

Accordingly, the seawater line L4 discharged from the seawater heat exchanger 41 can be formed to be short, thereby preventing the vacuum phenomenon occurring when the seawater is discharged to the outside.

A plurality of heating medium pumps 42 may be disposed in the forward direction of the seawater heat exchanger 41 on the force deck D4.

The heating medium pump 42 is provided on the heating medium circulation line L3 and circulates the heating medium to the seawater heat exchanger 41 and the steam heat exchanger provided on the heating medium circulation line L3.

The heat medium pump 42 may be modularized with the seawater heat exchanger 41 to be provided in the internal space of the engine room ER of the stern section 103 and may be provided in the interior space of the engine deck D4 ). ≪ / RTI > At this time, the heat medium pump 42 may be formed at a position lower than the sea surface or the sea surface.

In the conventional gas regeneration system (not shown), the seawater heat exchanger and the heating medium pump are disposed on the upper deck 104 of the hull, and the length of the seawater line connecting the seawater pump and the seawater heat exchanger is very long. Since the sea water line must have corrosion resistance and a pipe having a large diameter must be used, the cost is very high. However, as described above, conventionally, the length of the sea water line L4 is very long and the construction cost is large.

Therefore, in the embodiment of the present invention, the seawater heat exchanger 41 is modularized together with the heating medium pump 42 to be disposed on the force deck D4 of the engine room ER among the inner space of the stern section 103, By disposing it at a position adjacent to the outlet, the seawater line L4 is drastically reduced, thereby minimizing the construction cost.

As described above, in the embodiment of the present invention, the non-explosive heat is used as the heat medium, so that it is possible to arrange the components (heat medium supply device) using the heat medium inside the hull, (Heat medium supply device) using a heating medium can be disposed inside the hull by being made compact.

The steam heat exchanger is provided on the steam line and the heat medium circulation line L3 to exchange heat between the heat medium supplied through the steam line and the heat medium circulation line L3 to each other and to further transfer the heat source of seawater to the heat medium Function. Here, the steam can be lined with seawater and heat-exchanged with the heat medium. That is, the steam can supply the heat source to the heat medium in a sub-cycle in order to supplement the heat source supplied from the sea water.

The floor deck D5 (see Fig. 4) is disposed directly below the force deck D4, and the motor Mo, the shaft S, and the seawater pump 51 can be disposed.

The motor Mo receives power from the engine E to generate power and transmits the generated power to the directly connected shaft S so that the shaft S can rotate the propeller P. [

The motor Mo can be disposed at a position closer to the direct lower side of the engine E, that is, in the stern direction.

The seawater pump 51 supplies the seawater to the seawater heat exchanger 41 through the seawater line L4 and is disposed on the bottom portion 105 of the aft portion 103 (Not shown)).

The seawater pump 51 is disposed below the seawater heat exchanger 41 disposed on the floor deck D5 and disposed on the force deck D4 so that the seawater pump 51 and the seawater heat exchanger 41 The height difference is reduced, so that the head of the seawater pump 51 is reduced, thereby reducing OPEX.

The tank top deck D6 (see Fig. 6) is disposed directly below the floor deck D5, and the heating medium storage tank 43 can be disposed.

The heating medium storage tank 43 is a tank for temporarily storing a heating medium for repairing a heating medium supply device (preferably a seawater heat exchanger 41), is disposed below the seawater heat exchanger 41, .

Specifically, the heating medium storage tank 43 is disposed below the floor deck D5, which is the lower side of the force deck D4 on which the seawater heat exchanger 41 is disposed, thereby increasing the space utilization on the floor deck D5 And the construction of a separate transfer pump for draining the heat medium at the time of repairing the heat medium supply device is omitted, thereby reducing the construction cost.

The heating medium storage tank 43 is connected to the lowest position in the heat medium circulation line L3 between the seawater heat exchanger 41 and the heating medium pump 42 by a line branched at the position closest to the force deck D4 And can be connected to the heat medium circulation line L3 to receive the heat medium.

In the embodiment of the present invention, when the heating medium circulation line L3 is connected to the vaporizing section 40 through the upper deck 104, the cofferdam 106 formed in front of the engine room ER is connected to the vaporizing section 40, .

Specifically, the heat medium circulation line L3 horizontally passes through the coffer dam 106 in the direction of the coffer dam 106 from the engine room ER and is drawn into the coffer dam 106, And can be connected to the vaporizing section 40 in the regeneration unit room 2000 through the upper deck 104 on the coffer dam 106. [ At this time, a collecting device (not shown) for collecting the leaking heat medium may be disposed on the lowermost side of the coffer dam 106.

Accordingly, there is no need to construct a separate ventilation system when the heat medium circulation line L3 passes through the upper deck 104, thereby reducing the construction cost.

In the embodiment of the present invention, as shown in Fig. 7 and Fig. 8, vaporizers 401 to 404 constituted by four skids, respective heating medium supply lines 401 to 404 connected to the seawater heat exchanger 41 and the heating medium pump 42, (L3) can be constructed as one common line (common line). At this time, the vaporizer 40 is provided with first to fourth vaporizer skids 401 to 404 on the first to fourth trains 401a to 401d, and the first to fourth skids 401 to 404, The branched heating medium supply lines L3a to L3d branched from the heating medium supply line L3 may be connected.

Specifically, the heating medium supply line L3 may be formed such that the portions communicating with the upper deck 104 have one common line, and are preferably formed to have one common line in the copper dam 106 .

That is, conventionally, when the heat source supply line is connected to each of the vaporizers constructed with four skids, the upper deck has a penetration of eight (inlet line and outlet line) so that the durability of the upper deck is weakened. In the embodiment of the present invention, There is an effect that the durability of the upper deck 104 is improved and the possibility of leakage of the heating medium is reduced, thereby improving system reliability.

At this time, the heating medium supply line L3 can construct additional lines in parallel, and thereby the flow rate of the heating medium that can be accommodated by one heating medium supply line L3 can be sufficiently secured. In this case, the number of lines passing through the upper deck 104 may be four.

That is, the heating medium supply line L3 is connected to a bypass line (not shown) in parallel to the heating medium supply line L3 formed in the copper dam 106 to bypass one common line formed in the copper dam 106, As shown in FIG.

Here, the coffer dam 106 may be a coffer dam 106 between the engine room ER and the liquefied gas storage tank 10, that is, a coffer dam 106 disposed closest to the engine room ER.

Further, in the embodiment of the present invention, the heat medium supply device may further include an expansion tank (not shown) for maintaining the pressure of the heat medium circulation line L3.

In the embodiment of the present invention, the arrangement of the heating medium supply device may be arranged in the order of the expansion tank, the seawater heat exchanger 41, the heating medium pump 42, and the evaporator 40 based on the flow of the heating medium. This arrangement has conventionally lowered the permissible pressure of the seawater heat exchanger 41 compared to a structure in which the expansion tank, the heating medium pump, the seawater heat exchanger, and the vaporizer are arranged in this order on the basis of the heat medium flow and the construction cost of the seawater heat exchanger 41 There is an effect to be saved.

The seawater heat exchanger 41 may be a PCHE type heat exchanger and the pressure of the heating medium flowing into the seawater heat exchanger 41 is approximately 2.5 bar and the pressure of the heating medium flowing from the seawater heat exchanger 41 to the heating medium pump 42 The pressure is approximately 0.5 bar and the pressure of the heating medium discharged from the heating medium pump 42 may be approximately 15 bar. At this time, the pressure of the seawater flowing into the seawater heat exchanger 41 may be approximately 2 to 3 bar.

In the embodiment of the present invention, the seawater supply device will be described with reference to FIGS. 4 and 5. FIG. 4 and Fig. 5 showing the floor deck D5 in order to express the sea chest (SC in Fig. 4, SC1 to SC3 in Fig. 5) As shown in Fig.

As shown in Figs. 4 and 5, the seawater supply device includes a sea chest (SC in Fig. 4, SC1 to SC3 in Fig. 5) and seawater pump 51 into which inflow seawater flows.

The seawater pump 51 may be separately connected to the seawater line L4 connected to the sea chest (SC in Fig. 4, SC1 to SC3 in Fig. 5), respectively.

Conventionally, in the conventional seawater supply apparatus, the sea chest into which the incoming seawater is introduced is disposed only on one side of the lowermost side of the hull, and accordingly, the temperature of the discharged seawater discharged from the gas regeneration system Respectively.

In order to solve such a problem, the seawater supply device according to the present embodiment is characterized in that a sea chest (SC in Fig. 4, SC1 to SC3 in Fig. 5) is disposed on both sides of the lowermost side of the hull, The sea chest (SC) and the first and second sea chests (Sea Chest 1 and 2; SC1 and SC2) disposed on the starboard in FIG. 5, the sea water is discharged from the left side of the ship when the incoming sea water is introduced. The sea chest (SC) disposed on the port side in FIG. 4 and the third sea chest 3 (SC3) disposed on the port side in FIG. 5 are discharged to the left discharge port LH, In order to discharge seawater from the right side of the hull at the time of inflow, the discharged water is discharged to the right discharge port (RH), whereby the temperature of the seawater drawn into the sea chest (SC in FIG. 4, SC1 to SC3 in FIG. 5) It is effective.

At this time, the control of the inflow seawater and the discharged water can be controlled by a separate control unit (not shown), and the control unit can control the influent seawater in the first and second seed chests And the flow of the discharged water at the left outlet (LH) and the right outlet (RH) can be controlled. Here, the control unit may be connected to a separate control valve disposed on the sea water line L4 by wire or wirelessly, and may control the inflow seawater or discharged water by an opening regulation instruction.

 That is, the control unit can control the inflow or discharge of inflow water and discharged water at a position opposite to each other with respect to the hull.

In the embodiment of the present invention, the sea chests SC1 and SC2 disposed on the starboard as shown in FIG. 5 are referred to as a first sea chest 1 (SC1; aft sea chest) and a second sea chest 2 ; SC2; athlete's chest). In this case, the temperature of the seawater flowing into the seed chest can be more uniformly maintained. Here, the present embodiment is divided into two for the sake of convenience of explanation, but it is needless to say that it can be divided into plural,

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Ship 2: Gas regeneration system
10: liquefied gas storage tank 20: feeding pump
21: boosting pump 30: suction drum
40: vaporizer 401: first vaporizer
401a: first vaporizer train 402: second vaporizer
402a: Second vaporizer train 403: Third vaporizer
403a: third vaporizer train 404: fourth vaporizer
404a: fourth vaporizer train 41: sea water heat exchanger
42: heating medium pump 43: heating medium storage tank
51: Seawater pump 70: First demand customer
80: Evaporative gas compressor 101:
102: center portion 103: stern portion
104: upper deck 105:
106: Copper dam 2000: Regenerated unit room
2001: Cargo Switchboard Room
TR: Transfer room CVT: Conversion room
E: engine C: cabin
Ch: Stoker ER: Engine room
V: Vent mast D2: Second deck
D3: Third Deck D4: Force Deck
D5: Floor deck D6: Tank top deck
Mo: Propulsion motor SC: Mr. Chest
SC1 to SC3: first to third seeds RH: RH outlet
LH: Left outlet
L1: liquefied gas supply line L2: regasification line
L3: Heat medium circulation line L4: Sea water line
L5: Evaporative gas supply line

Claims (8)

hull;
A first seed chest disposed at a port on the lower portion of the hull and into which inflow water flows;
A second seed chest disposed on the starboard bottom of the hull and into which the incoming seawater flows;
A left seawater discharge port disposed at a port of the lower portion of the hull and discharging discharged water after being used in the hull;
A right seawater discharge port disposed on the starboard below the hull and discharging the discharged seawater after being used in the hull; And
And a control unit for controlling the flow of the discharged seawater at the first and second seed chests and the discharged seawater at the left and right seawater discharge openings. The apparatus of claim 1,
And controls the inflow and outflow of the inflowing seawater and the discharge water at a position where the inflow seawater and the discharge water are opposite to each other with reference to the hull. 3. The apparatus of claim 2,
And controlling the discharge of the discharged seawater through the right seawater discharge port when the inflow seawater is introduced from the first seed chest,
And discharging the discharged seawater through the left seawater discharge port when the inflow seawater is introduced from the second seed chest. The method of claim 1, wherein the first seed chest comprises:
And is divided into a plurality of segments. 5. The method of claim 4, wherein the first seed chest comprises:
Wherein the stern seed chest includes a stern seed chest dividedly formed in a stern direction and a stern seed chest dividedly formed in a forward direction. 6. The method of claim 5,
A plurality of seawater pumps for supplying the inflow seawater introduced into the first and second seed chests to the in-hull seawater utilization devices; And
Further comprising a seawater supply line connecting the seawater pump and the first and second seed chests,
The seawater supply line includes:
Wherein the plurality of seawater pumps are individually connected to each other when the aft seed chest or the aft seed chest is connected. The water treatment system according to claim 1, wherein the influent seawater
Wherein the seawater is used in a regeneration apparatus for regenerating the liquefied gas and is discharged from the sea chest apparatus. A ship comprising the seed chest device according to any one of claims 1 to 7.

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