KR20220029976A - A container module for maintaining ship - Google Patents

Abstract

The present invention provides a container module for ship maintenance. According to the present invention, the container module for ship maintenance comprises: a container housing which is detachably mounted on a ship and has an inlet through which outside air is introduced; an inert gas generating unit provided inside the container housing and generating an inert gas using air introduced through the inlet; a docking unit connected to the inert gas generating unit and provided at a lower part of the container housing and detachably connected to a piping line of a liquefied gas tank in the ship; a gas detection unit which detects that the leaked gas in the ship flows into the inlet; and an opening/closing member operable to open and close the inlet according to the gas detection signal of the gas detection unit.

Description

Container module for ship maintenance {A CONTAINER MODULE FOR MAINTAINING SHIP}

The present invention relates to a container module for ship maintenance, and more particularly, for ship maintenance that is detachably mounted on a ship and can perform operations such as inerting, gas spring and aeration of a liquefied gas tank in a ship It is about the container module.

In general, a ship is a means of transport that carries a large amount of minerals, crude oil, natural gas, or thousands of container boxes and sails the ocean. move through

These ships receive fuel from a fuel tank and drive an engine to generate thrust. Recently, as environmental problems arise, ships using liquefied gas such as LNG are widely used as fuel.

In the case of a liquefied gas propulsion vessel using LNG as a fuel, it enters and exits a dock built in a shipyard or port to maintain a liquefied gas tank such as a fuel tank or a storage tank once every several years. At this time, maintenance is performed Operations such as inerting, gas freeing, and aeration of the liquefied gas tank using an inert gas before can be performed.

However, when such equipment is installed for each ship, it may take up an installation space in the ship and cause inconvenience to the crew, and there is a problem in that management costs occur because equipment used once every several years has to be separately maintained and managed. .

Moreover, the equipment is usually installed adjacent to the liquefied gas tank, and when gas leaks from the liquefied gas tank or the surrounding piping, the leaked gas may flow into the equipment, and there is a risk that safety accidents such as explosion may occur.

Patent Publication No. 2019-0012546 (2019.02.11) "Gas replacement system for liquefied gas storage tank and ship equipped therewith"

In the present invention, the container module for ship maintenance, specifically, is formed in a modular type of container size that can be detached from the ship, and can be temporarily supplied and used to a ship requiring maintenance, and can block the inflow of leaking gas in the ship Therefore, it is intended to provide a container module for ship maintenance that can protect internal equipment and prevent safety accidents such as explosions.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

In order to solve the above problems, the present invention provides a container housing that is detachably mounted on a ship and has an inlet through which external air is introduced, is provided inside the container housing, and uses air introduced through the inlet. A docking unit that is connected to the inert gas generating unit and the inert gas generating unit that generates an inert gas, is provided at the bottom of the container housing and is detachably connected to the piping line of the liquefied gas tank in the vessel, and the leaking gas in the vessel flows into the inlet Provided is a container module for ship maintenance, including a gas detection unit that detects that the gas is detected and an opening/closing member that operates to open and close an inlet according to a gas detection signal of the gas detection unit.

In addition, provided in the inlet, it provides a container module for ship maintenance further comprising a ventilation member for discharging the introduced leak gas to the outside.

In addition, the inlet is formed in the form of a duct, an inlet is formed on one side, and an inlet is formed on one side and extended into the container housing to communicate with the inert gas generating unit, the gas detecting unit is provided at the inlet of the inlet, and the opening and closing member is provided with the gas detecting unit and It provides a container module for ship maintenance that is spaced apart and provided on the other side of the inlet.

In addition, the pipe member further includes a pipe member extending outward from the inlet portion to suck outside air, the pipe member connecting between the extension pipe and the inlet portion and the extension pipe provided to be adjustable in length, the extension pipe It provides a container module for ship maintenance including a joint pipe that is provided to adjust the heading direction.

The container module for ship maintenance according to an embodiment of the present invention is formed in a modular type of container size that can be detached from a ship, and can be temporarily supplied and used to a ship requiring maintenance of a liquefied gas tank, so that additional space in the ship It has the advantage of being easy to secure and reducing the cost of equipment installation.

In addition, by docking the container housing equipped with the inert gas generating unit to a bunker station or fuel supply room in a ship, it is possible to easily perform operations such as inerting, gas spring and aeration of the liquefied gas tank using inert gas.

In addition, in the process of introducing external air to generate the inert gas, it is possible to block the inflow of the leaking gas in the ship together, thereby protecting internal equipment and preventing safety accidents such as explosions in advance.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

1 illustrates an example of a container loading structure and a fuel supply system of a liquefied gas propulsion container ship.
2 is a view illustrating a structure mounted in a ship of a container module for ship maintenance according to a first embodiment of the present invention.
3 is a plan view and a side view showing the internal configuration of the container module for maintenance according to the first embodiment of the present invention.
4 is a plan view and a side view showing the configuration of a container module for ship maintenance according to a second embodiment of the present invention.
5 is a plan view illustrating an in-ship structure of a container module for ship maintenance according to a second embodiment of the present invention.
6 is a side view showing the configuration of a container module for ship maintenance according to a third embodiment of the present invention.

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

DETAILED DESCRIPTION The detailed description set forth below in conjunction with the appended drawings is intended to describe exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

In order to clearly explain the present invention in the drawings, parts not related to the description may be omitted, and the same reference numerals may be used for the same or similar components throughout the specification.

In an embodiment of the present invention, expressions such as “or” and “at least one” may indicate one of the words listed together, or a combination of two or more.

1 illustrates a container loading structure and a fuel supply system of a liquefied gas propulsion container ship 10 as an example, and FIG. 2 is a vessel 10 of a container module 100 for ship maintenance according to a first embodiment of the present invention. ) shows my mounting structure.

The container module 100 for ship maintenance according to an embodiment of the present invention can be used for emptying the inside of the tank for maintenance of the liquefied gas tank provided in the ship 10, in particular, a modular type of container size By being formed and detachably provided on the ship 10, it can be easily applied to the liquefied gas propulsion container ship 10 for loading cargo such as the container box (c).

First, a container loading structure and a fuel supply system of the liquefied gas propelled container ship 10 will be described with reference to FIGS. 1 and 2 .

A plurality of container boxes c may be loaded inside the hull 11 of the container ship 10 , and for this purpose, a cargo hold may be provided inside the hull 11 in the front-rear direction.

In addition, in the case of the container ship 10 , in order to maximize the cargo loading capacity, the space in which the living quarters 13 where sailors reside, the engine 20 installed in the engine room 21 , and the fuel tank 30 are installed And a plurality of container boxes (c) can be loaded on the inside and upper deck of the hull 11 except for the machine room and the like.

In addition, a plurality of lashing bridges 12 may be installed at regular intervals on the upper deck of the hull 11 in order to fix the loaded container boxes (c).

The engine 20 provided in the hull 11 may be disposed in the engine room 21 adjacent to the stern side in the interior of the hull 11 to provide propulsion power of the ship 10 .

That is, the engine 20 for propulsion of the ship 10 is accommodated in the engine room 21 , and the engine 20 is mechanically or electrically connected to the propeller and consumes liquefied gas supplied from the fuel tank 30 , The propeller can be rotated.

At this time, at least one engine 20 may be provided in the engine room 21 , and as an example, a dual fuel (DF) engine is configured to consume different fuels such as liquid fuel and liquefied gas fuel. However, in addition to the propulsion of the ship 10 , it is possible to produce electric power to be supplied to the ship 10 .

On the other hand, the fuel tank 30 may store liquefied gas such as LNG, and may be spaced apart from the engine 20 at the stern side and disposed at the central portion of the hull 11 at the lower portion of the residence 13 .

In addition, the liquefied gas stored in the fuel tank 30 may be stored in a liquefied state, and is supplied to the engine 20 through the fuel supply line 40 for propulsion or power generation to operate the container ship 10 . can be consumed as

In addition, a cofferdam 31 may be disposed on the upper side and both sides of the fuel tank 30 , and a fuel supply room 32 and a tank connection room (not shown) are provided in the space between the cofferdam 31 and the upper deck. can be provided.

Here, the fuel supply room 32 is an area in which fuel supply equipment (not shown) such as a pump, a compressor and a carburetor connected to a pipe line (not shown) extending from the fuel tank 30 is provided, and the fuel supply equipment ( A fuel supply line 40 connected to the engine 20 provided at the stern portion of the hull 11 may be connected to (not shown).

In addition, the tank connection room (not shown) is provided above the fuel tank 30 and may include a piping line (not shown) connecting the fuel tank 30 and fuel supply equipment (not shown).

In addition, a bunker station (not shown) for performing fuel bunkering to the fuel tank 30 may be provided on the side portion of the hull 11, and the bunker station (not shown) may include a gas filling port, etc. It may be connected to the fuel tank 30 through a pipe line (not shown) of

On the other hand, the container module for maintenance 100 accommodates the inert gas generator 120 for maintenance of the fuel tank 30 and is detachably docked in the fuel supply room 32 or the bunker station (not shown). It can be loaded on the upper deck of the hull 11 as possible.

Specifically, the container module 100 for maintenance is loaded on the upper deck of the upper deck of the fuel supply room 32 or the bunker station (not shown) as needed, and the fuel supply room 32 or It may be docked in a bunker station (not shown), and may be used for emptying the inside of the tank for maintenance of the fuel tank 30 .

That is, in this embodiment, through the inert gas generating unit 120, the container module 100 for maintenance that can perform operations such as inerting, gas freeing, and aeration. It is detachably provided on the ship, and if necessary, it can be mounted on the ship to perform the corresponding work.

3 shows the internal configuration of the container module 100 for maintenance according to the first embodiment of the present invention in a plan view (a) and a side view (b).

2 and 3 , the container module 100 for maintenance according to the present embodiment includes a container housing 110 , an inert gas generator 120 , a docking part 130 , a gas detection part 140 , and opening/closing. A member 150 may be included.

The container housing 110 is in the form of an empty box, is formed in a container size, and may be mounted on the upper deck of the hull 11 on which the container box (c) is loaded.

Specifically, the container housing 110 forms the exterior of the container module 100 for maintenance of the present embodiment, and can accommodate the inert gas generator 120 therein.

In addition, the container housing 110 may be provided with an inlet 111 capable of introducing external air into the inert gas generating unit 120 .

As an example, in this embodiment, the inlet 111 through which external air is introduced is formed on both sides of the container housing 110 , and the inlet 111 may be formed in the form of a duct having an air passage. In addition, one side is opened and the other side is extended into the container housing 110 to communicate with the inert gas generating unit 120 .

The container housing 110 may be loaded together with the container box c on the upper deck of the container ship 100, and by being formed in a container size, it may be loaded and secured between the lashing bridges 12 provided on the upper deck. .

At this time, the container housing 110 loaded on the upper deck may be loaded on the side adjacent to the bunker station (not shown) or the fuel supply room 32 connected to the fuel tank 30 , and thereby through the docking unit 130 . It may be docked in a bunker station (not shown) or a fuel supply room 32 .

The inert gas generator 120 may generate an inert gas and supply it to the fuel tank 30 , and as an example, may be formed of a nitrogen generator capable of generating nitrogen using external air.

A plurality of such inert gas generating units 120 may be provided in the container housing 110 , and a plurality of inert gas generating units 120 may be selectively driven as needed.

The docking unit 130 is provided at the lower portion of the container housing 110 , and may be detachably connected to a piping line (not shown) of the fuel tank 30 .

As an example, the docking unit 130 may be formed in a flange shape, and may be provided in plurality under the container housing 110 .

At this time, the plurality of docking units 130 may be coupled to a supply line connected to the inert gas generating unit 120 in the container housing 110 , and disposed on the outside of the container housing 110 in the form of a flange, the fuel tank It may be detachably mounted through a pipe line (not shown) connected from 30 and a connector.

Here, the pipe line (not shown) may refer to a bunker line and a fuel supply line connected to the fuel tank 30 and disposed in a bunker station (not shown) or a fuel supply room 32 .

The gas detection unit 140 may be provided inside the inlet 111 of the container housing 110 to detect that leaked gas in the vessel flows into the inlet 111 .

That is, since the maintenance container module of the present embodiment is disposed adjacent to the fuel supply room 32 , when BOG leaks from the fuel supply room 32 , the leaked BOG is disposed at the inlet of the container housing 110 . It may be introduced through 111 , and in this case, boil-off gas may be detected through the gas detection unit 140 .

The opening/closing member 150 is provided at the rear end of the inlet 111 of the container housing 110 , and may operate to open and close the inlet 111 according to a gas detection signal of the gas detection unit 140 .

As an example, the opening/closing member 150 may be formed in the form of a louver vent capable of opening/closing operation, and an inlet 111 at the rear end of the inlet 111 communicating with the inert gas generating unit 120 . It may be provided to open and close.

At this time, the gas detection unit 140 may be provided at the inlet side of the inlet unit 111 , and when leaking gas entering the inlet unit 111 is detected by the gas detection unit 140 , it is located at the rear end of the inlet unit 111 . The provided opening/closing member 150 may automatically close the inlet 111 to prevent leaking gas from flowing into the inert gas generating unit 120 .

That is, in the case of the inert gas generator 120 , air circulation is required to generate nitrogen, which is an inert gas. Since a danger may occur, in this embodiment, the inflow of the leaked gas is detected through the gas detection unit 140 and blocked by the opening/closing member 150 .

In addition, the maintenance container module of the present embodiment may further include a ventilation member (not shown) capable of discharging the leaked gas introduced into the inlet of the container housing 110 to the outside.

As an example, the ventilation member (not shown) may be formed of a fan, and when the rear end of the inlet 111 is closed by the opening and closing member 150, the ventilation member (not shown) is driven to drive the inlet 111 ) can exhaust internal gas to the outside.

On the other hand, the maintenance container module 100 according to the present embodiment as described above is an operation such as inerting, gas freeing, and aeration for maintenance of the fuel tank 30 . can be performed.

Specifically, first, after performing a warm-up inside the fuel tank 30 , an inert gas such as nitrogen is generated through the inert gas generating unit 120 , and the generated inert gas is transferred to a docked piping line (not shown). City) through the fuel tank 30, inerting (inerting) can be performed.

In this process, the inert gas injected into the fuel tank 30 may be mixed with the boil-off gas in the tank, and the mixed gas is supplied to the engine 20 through the fuel supply line 40 for ship propulsion or electric power generation. can be used

After that, when the inside of the fuel tank 30 is filled with the inert gas, the driving of the inert gas generating unit 120 is stopped, and air is injected into the fuel tank 30 to ventilate the aeration can be performed. .

At this time, the inert gas inside the fuel tank 30 may be discharged through a vent mast (not shown) by an aeration operation, whereby the inside of the fuel tank 30 is maintained so that the operator can enter and exit. It may be formed in a repairable state.

Meanwhile, FIG. 4 shows the configuration of a container module 200 for ship maintenance according to a second embodiment of the present invention in a plan view (a) and a side view (b), and FIG. 5 is a second embodiment of the present invention. A plan view of the in-vessel mounting structure of the container module 200 for ship maintenance according to FIG.

Referring to FIG. 4 , the maintenance container module 200 according to the second embodiment has the same gas inside the container housing 110 as compared to the maintenance container module 100 of the first embodiment described above. The detector 140 and the opening/closing member 150 may be included, and a pipe member 210 may be further included.

In the present embodiment, the inlet 111 through which external air is introduced may be formed on both sides of the container housing 110, and a pipe is disposed at the inlet of at least one inlet 111 among the pair of inlet 111. The member 210 may be connected.

Here, the pipe member 210 connected to the inlet 111 of the container housing 110 is a configuration for sucking in external air, and boils off gas that may leak from the fuel supply room 32 into the inlet 111 . It may be installed to extend outwardly so as not to be introduced into the furnace.

Specifically, the pipe member 210 connects between the extension pipe 211 provided to be adjustable in length, the inlet 111 of the container housing 110 and the extension pipe 211, and the extension pipe 211 faces. It may include a joint pipe 212 provided to adjust the direction.

Here, the joint pipe 212 may be formed in a curved tube shape, one side may be rotatably coupled to the inlet of the inlet 111 , and the joint pipe 212 may be coupled to the other side.

In addition, the extension pipe 211 may be formed so that a plurality of pipes are connected in multiple stages to be telescopic.

Accordingly, by rotating the joint pipe 212 connected to the inlet 111 of the container housing 110, the direction in which the extension pipe 211 connected to the joint pipe 212 faces can be adjusted, and the extension pipe 211 can be adjusted. By adjusting the length of the extension pipe 211 can be arranged at a desired position.

At this time, by adjusting the direction and length of the extension pipe 211, the end of the extension pipe 211 can be arranged in a space where there is no risk of leaking gas.

In addition, even if the leaking gas flows into the extension pipe 211, it is detected through the gas detection unit 140 provided inside the inlet 111 and blocks the leaking gas with the opening/closing member 150, so that the leaking gas is generated by the inert gas generator It can be prevented from flowing into (120).

As an example, referring to FIG. 5 , a vent member 14 for introducing fresh outside air into the fuel supply room 32 may be provided on the deck at the upper portion of the fuel supply room 32 toward the residence 13 , By disposing the end of the extension pipe 211 toward the ventilation hole of the vent member 14 , fresh outside air can be introduced into the inlet 111 of the container housing 110 .

At this time, a suction fan (not shown) for air suction may be provided inside the extension pipe 211 or the joint pipe 212 .

Meanwhile, in the above-described embodiment, an example in which the joint pipe 212 and the extension pipe 211 are coupled to and connected to the inlet 111 of the container housing 110 has been described, but the joint pipe 212 and the extension pipe ( 211) is detachably provided and may be coupled and installed as needed.

6 is a side view showing the configuration of a container module 300 for ship maintenance according to a third embodiment of the present invention.

Referring to FIG. 6 , the container module 300 for maintenance according to the third embodiment is gas provided inside the container housing 110 , compared to the container module 200 for maintenance according to the second embodiment described above. The configuration of the detection unit 140 and the opening/closing member 150 may be omitted.

That is, as described above as an example, when external air is introduced through the extension pipe 211 of the pipe member 210 from the vent side of the vent member 14 installed on the upper deck, there is no risk of leaking gas in the ship. , it is not necessary to provide the gas detection unit 140 and the opening/closing member 150 for blocking the external inflow gas inside the container housing 110 .

As described above, the container modules 100, 200, and 300 for ship maintenance according to an embodiment of the present invention are formed in a modular type of container size that can be detached from a ship, and are temporarily supplied to a ship requiring maintenance of a liquefied gas tank. It can be used and used, so it is easy to secure additional space in the ship and has the advantage of reducing the equipment installation cost.

In addition, the container housing 110 provided with the inert gas generating unit 120 is conveniently docked in a bunker station (not shown) or fuel supply room 32 in the ship, and the inerting of the liquefied gas tank using the inert gas, gas Operations such as fringing and aeration can be easily performed.

In addition, in the process of introducing external air to generate the inert gas, it is possible to block the inflow of the leaking gas in the ship together, thereby protecting internal equipment and preventing safety accidents such as explosions in advance.

The embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples to easily explain the technical content of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention

Therefore, the scope of the present invention should be construed as including all changes or modifications derived based on the technical spirit of the present invention in addition to the embodiments disclosed herein are included in the scope of the present invention.

100,200,300 : Container module for ship maintenance
10: ship 11: hull
12: Lashing Bridge 13: Residence
14: vent member 20: engine
30: fuel tank 40: fuel supply line
110: container housing 120: inert gas generating unit
130: docking unit 140: gas detection unit
150: opening and closing member 210: pipe member

Claims (4)

a container housing that is detachably mounted on a ship and has an inlet through which external air is introduced;
an inert gas generating unit provided inside the container housing and generating an inert gas using air introduced through the inlet;
a docking unit connected to the inert gas generating unit and provided under the container housing and detachably connected to the piping line of the liquefied gas tank in the ship;
a gas detection unit for detecting that the leaked gas in the vessel flows into the inlet; and
and an opening/closing member operable to open and close the inlet according to the gas detection signal of the gas detection unit.
The method of claim 1,
The container module for ship maintenance further comprising a ventilation member provided at the inlet and discharging the introduced leak gas to the outside.
The method of claim 1,
The inlet is formed in the form of a duct, an inlet is formed on one side and the other side is extended into the container housing to communicate with the inert gas generator,
The gas detection unit is provided at the inlet of the inlet, and the opening/closing member is spaced apart from the gas detection unit and provided at the other side of the inlet.
The method of claim 1,
Further comprising a pipe member extending outwardly from the inlet and provided to suck outside air,
The pipe member,
an extension pipe provided to be adjustable in length; and
A container module for ship maintenance including a joint pipe connecting between the inlet and the extension pipe, and adjusting a direction in which the extension pipe faces.

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