KR20220015557A - Fuel Tank Apparatus and Ship having the same - Google Patents

Abstract

Disclosed is a fuel tank device for a ship that can more flexibly cope with external loads by adding structural flexibility. According to an embodiment of the present invention, a fuel tank device for a ship comprises: a fuel tank which stores fuel inside; and a saddle for supporting the fuel tank. The saddle may include: a saddle body; and a mount member for flexibly receiving the motion of the fuel tank on the saddle body.

Description

Fuel Tank Apparatus and Ship having the same

The present invention relates to a fuel tank device and a ship including the same.

In general, a ship has propulsion by an engine that generates power by combustion of fuel, and diesel, heavy oil, MOD (Marine Diesel Oil), MFO (Marine Fuel Oil), etc. Due to the large amount of harmful substances that are generated, it is a cause of causing environmental pollution.

For this reason, as an eco-friendly ship (Green-ship), a ship using liquefied natural gas (hereinafter referred to as “LNG”) as fuel has been developed, and the official certification (Approval In Principle, AIP) from the classification of each country has been obtained. It has been approved and is meeting the demand for conversion to clean energy due to environmental regulations.

A fuel tank for using LNG as a fuel is provided on a ship. The design and construction of fuel tanks are mainly regulated by the International Maritime Organization (IMO) through the application of IGC Code and IGF Code.

These fuel tanks are manufactured in various types and installed on ships. Among the independent tanks, there are IMO Type A, IMO Type B, IMO Type C, and Novel Design.

In the case of IMO Type A, since the hull itself must be made of expensive metal that can withstand cryogenic temperatures, the cost of building the hull increases. In the case of IMO Type C, which is a pressure tank, it is easy to manufacture and install compared to a low-temperature type tank, and it does not require various analysis and has high safety, which is why it is widely adopted.

1 is a side view schematically showing a conventional C-Type liquefied gas storage tank.

As shown in FIG. 1 , in the C-Type tank 20 of the pressure vessel type among the liquefied gas storage tanks, the fuel tank 22 having a cylindrical shape and a circular cross-sectional shape is supported by a saddle 21 . It can be installed on the upper deck of the ship.

However, since this saddle structure is usually directly attached to the tank, the structure is very stiff, and in certain situations, load concentration occurs, which may cause the saddle to break, and multiple motions. There was a disadvantage in that not only the saddle, but also the wooden block (23) and the anti-flotation device (24) had to be complexed to control the flotation device.

The present invention provides a fuel tank device that can more flexibly cope with external loads by adding structural flexibility, and a ship including the same.

The problems to be solved by the present invention are not limited to the problems mentioned above. 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 following description.

According to an aspect of the present invention, a fuel tank for storing fuel therein; and saddles for supporting the fuel tank; The saddle includes a saddle body; and a mount member for flexibly receiving the motion of the fuel tank on the saddle body may be provided.

In addition, the mount member may include a first jig portion provided to protrude from both sides of the fuel tank; a first mount module provided on an upper end of the saddle body and supporting a lower portion of the first jig part; A second mount module provided on the upper end of the saddle body and supporting an upper portion of the first jig part may be included.

In addition, the first mount module and the second mount module may be disposed symmetrically to each other with the first jig part therebetween.

In addition, the mount member may include third mount modules provided to the saddle body to support the bottom surface of the fuel tank.

In addition, the third mount modules may be arranged symmetrically with respect to an extension line extending vertically downward from the center of the fuel tank.

In addition, the first mount module and the second mount module may be provided as hydraulic mounts, and the third mount module may be a rubber or elastic body type.

In addition, liquefied gas may be stored in the fuel tank.

According to an embodiment of the present invention, the first and second mount modules control up and down motions on both sides of the fuel tank, and the third mount module supports the bottom of the fuel tank, so that it is possible to structurally respond to external loads more flexibly.

The effects of the present invention are not limited to the effects described above. Effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention pertains from this specification and the accompanying drawings.

1 is a side view schematically showing a conventional C-Type liquefied gas storage tank.
2 is a view showing a ship according to an embodiment of the present invention;
3 is a perspective view for explaining a fuel tank device according to an embodiment of the present invention.
FIG. 4 is a front view of the fuel tank device shown in FIG. 3 ;
FIG. 5 is an enlarged view of the main part shown in FIG. 4 .

Other advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and the present invention is only defined by the scope of the claims. Even if not defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly accepted by common technology in the prior art to which this invention belongs. A general description of known configurations may be omitted so as not to obscure the gist of the present invention. In the drawings of the present invention, the same reference numerals are used as much as possible for the same or corresponding components. In order to help the understanding of the present invention, some components in the drawings may be shown exaggerated or reduced to some extent.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprise", "have" or "include" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one It should be understood that it does not preclude the possibility of the presence or addition of or more other features or numbers, steps, operations, components, parts, or combinations thereof.

Figure 2 is a view showing a ship according to an embodiment of the present invention, Figure 3 is an exploded perspective view for explaining a fuel tank device according to an embodiment of the present invention, Figure 4 is the fuel tank shown in Figure 3 It is a front view of the device, and FIG. 5 is an enlarged view of the main part shown in FIG. 4 .

2 to 5 , in the ship 10 according to an embodiment of the present invention, a cargo hold (not shown) is provided inside the hull 100 , and the on upper deck which is the uppermost deck of the hull 100 . A fuel tank device 200 is provided on the 110 and liquefied gas such as LNG may be stored as a fuel for driving an engine (not shown) for propelling the ship 10 .

The vessel 10 in which the fuel tank device 200 of the present invention is installed is a tanker, LNG, which carries a large amount of minerals, crude oil, natural gas, or cargo such as thousands of containers or more in a cargo hold and sails the ocean. It may be a large vessel such as a carrier, an LPG carrier, a container carrier, a car carrier, a bulk carrier, or a mineral carrier, and the present embodiment is not limited thereto. All ships in which the fuel tank device 200 is installed to use LNG as a fuel. Of course, (10) may be included.

According to the present embodiment, the fuel tank device 200 may include a fuel tank 210 and a saddle 230 .

The fuel tank 210 is an IMO Type C (or Novel Design) having a cylindrical shape and a circular cross-sectional shape, and is provided as a pressure tank capable of storing cryogenic liquefied gas in order to supply fuel to the engine (not shown). can be For example, the fuel tank is not limited to a cylindrical shape.

Here, the liquefied gas may be liquefied natural gas (LNG; Liquefied Natural Gas) or liquefied petroleum gas (LPG; Liquefied Petroleum Gas). And, when the liquefied gas is liquefied natural gas, the fuel tank 210 may store the liquefied natural gas at approximately -160 degrees and 10 bar. Also, the fuel tank 210 may have a dual structure including an outer tank, an inner tank, and a heat insulating layer.

The fuel tank 210 may be installed on the upper deck 110 of the ship 10 while being supported by a saddle 230 to be described later. The installation location of the fuel tank 210 is preferably installed close to the engine (not shown). For example, the fuel tank 210 may be installed in the free space in front, rear, or on the side with respect to the cabin. Of course, the present invention is not limited thereto and may be installed at an appropriate location in consideration of the movement of the crane and the movement of the cargo during loading and unloading of cargo.

In addition, a dome 212 is formed on the upper portion of the fuel tank 210 so that a plurality of lines (not shown) may be installed. Here, the plurality of lines may be formed as lines for the inlet and discharge of fuel, and tank state diagnosis, and the dome 212 is formed with a first manhole for the inflow into the fuel tank 110 . maintenance can be achieved.

Such, the fuel tank 210 is provided on the upper deck 110 of the hull 10, for example, the fuel tank 210 may be provided in pairs on the hull 100, the hull 100 It can be arranged side by side biased to each of the port and starboard of

At least two or more saddles 230 may be fixedly installed on the upper deck 110 , and the fuel tank 210 may be supported on the upper surface of the saddle 230 in a non-contact structure. The saddle 230 may include a saddle body 240 and a mount member 250 .

The saddle body 240 may be made of carbon steel. However, the material of the saddle body 240 is not limited to carbon steel, and may be a material capable of withstanding the load of the fuel tank.

The mount member 250 is provided to flexibly receive the motion of the fuel tank 210 on the saddle body 240 . The mount member 250 may include a first jig unit 252 , a first mount module 254 , a second mount module 256 , and a third mount module 258 .

In the mount member 250, vibration (motion) is generated by the process of the operation of the vessel, the contraction and expansion of the fuel tank, and the like. It can occur in the left and right directions. The mount member may flexibly cancel or block the motion of the fuel tank.

The third mount module 258 may be provided near the center of the upper surface of the saddle body 240 . The third mount module 258 supports the bottom surface of the fuel tank 210 on the saddle body 240 . The third mount module 258 may be disposed symmetrically with respect to an extension line L1 extending in a vertical downward direction from the center C of the fuel tank 210 . The third mount module 258 may be provided in an elastic (rubber) type. In this way, the fuel tank 210 may be supported by the third mount module 258 while being spaced apart from the saddle body 240 .

Meanwhile, the first jig unit 252 may be provided to protrude from both sides of the fuel tank 210 . For example, the first jig unit 252 may be attached to the side surface of the fuel tank 210 by welding or the like. The first jig part 252 may be symmetrically disposed with respect to the extension line L1 of the fuel tank 210 .

The first mount module 254 and the second mount module 256 may be mounted on a bracket 248 installed on the upper surface of the edge of the saddle body 240 . The first mount module 254 is provided upwardly at the lower end of the bracket 248 , and may be installed to support the lower portion of the first jig unit 252 . The second mount module 256 is provided downwardly on the upper end of the bracket 248 , and may be installed to support the upper portion of the first jig unit 252 . That is, the first mount module 254 and the second mount module 256 may be symmetrically disposed with the first jig unit 252 interposed therebetween. The first mount module 254 and the second mount module 256 may be hydraulic mounts of a liquid encapsulation type in which a liquid is encapsulated therein.

As shown in FIG. 5 , the first mount module 254 and the second mount module 256 have the same configuration, and the configuration is briefly described based on the first mount module 254 , reference numeral 261 . denotes a main rubber member, reference numeral 262 denotes a pouring chamber, and reference numeral 263 denotes a pouring chamber. Reference numeral 264 denotes a diaphragm constituting the liquid chamber 103, and reference numeral 265 denotes an air chamber filled with air. An orifice structure 266 is interposed between the liquid injection chamber 262 and the liquid liquid chamber 263 to separate the liquid injection chamber 262 and the liquid liquid chamber 263. omit

As described above, the first mount module 254 and the second mount module 256 may control the motion of the first jig unit 252 in the upper and lower directions in the up/down direction from both sides.

The above embodiments are presented to help the understanding of the present invention, and do not limit the scope of the present invention, and it should be understood that various modified embodiments therefrom also fall within the scope of the present invention. The technical protection scope of the present invention should be defined by the technical idea of the claims, and the technical protection scope of the present invention is not limited to the literal description of the claims itself, but is substantially equivalent to the technical value. It should be understood that it extends to the invention of

200: fuel storage device 210: fuel tank
230: saddle 240: saddle body
250: mount member 252: first jig portion
254: first mount module 256: second mount module
258: third mount module

Claims (6)

a fuel tank that stores fuel inside; and
saddles for supporting the fuel tank;
the birds
saddle body; and
and a mount member for flexibly receiving the motion of the fuel tank on the saddle body. The method of claim 1,
The mount member is
a first jig portion protruding from both sides of the fuel tank;
a first mount module provided on the upper end of the saddle body and supporting the lower portion of the first jig;
A fuel tank device including a second mount module provided on the upper end of the saddle body and supporting the upper portion of the first jig. 3. The method of claim 2,
The first mount module and the second mount module are disposed symmetrically to each other with the first jig part therebetween. The method of claim 1,
The mount member is
It is provided on the saddle body to support the bottom surface of the fuel tank,
and third mount modules that are symmetrically disposed based on an extension line extending in a vertical downward direction from the center of the fuel tank. 5. The method of claim 4,
The first mount module and the second mount module are provided as hydraulic type mounts,
The third mount module is a fuel tank device of a rubber or elastic body type mount. A ship comprising the fuel tank device according to any one of claims 1 to 5.

Images