KR20130057322A - Apparatus for producing fuel gas and container type liquefied gas tank and container ship including the same - Google Patents

Abstract

A fuel gas generating device and a container type liquefied gas tank and a container ship having the same are disclosed. According to an aspect of the present invention, there is provided a fuel gas generating apparatus comprising: regasification means for generating liquefied gas by exchanging liquefied gas with ambient air; A gas-liquid separator that separates the liquid gas from the regasification gas to generate a fuel gas; And recirculation means for returning the liquid gas separated by the gas-liquid separator to the regasification means.

Description

APPARATUS FOR PRODUCING FUEL GAS AND CONTAINER TYPE LIQUEFIED GAS TANK AND CONTAINER SHIP INCLUDING THE SAME}

The present invention relates to a fuel gas generating device and a container type liquefied gas tank and a container ship having the same.

Natural gas and petroleum gas, which are widely used as fuels, are transported in a liquefied gas state in which the volume is reduced through liquefaction for efficient transport.

For example, liquefying natural gas to liquefied natural gas (Liquefied Natural Gas, LNG) reduces its volume to about one-sixth, increasing the amount it can carry at one time. The liquefied natural gas carried to the destination is then regasified and used as fuel.

In order to transport liquefied gas over long distances, liquefied gas carriers equipped with cargo tanks for storing cryogenic liquids are used. The manufacture of such cargo holds requires a high level of skill, and the construction of liquefied gas carriers is expensive and time consuming.

In addition, as part of efforts to resolve climate change and global warming issues, the International Maritime Organization (IMO) has discussed ways to reduce greenhouse gas emissions from ships, and the revised International Marine Pollution Prevention Convention (MARPOL Convention, adopted in October 2008). The fermentation is expected to increase the number of sea areas designated as emission control areas where ships' sulfur oxides, fine dust and nitrogen oxide emissions can be controlled.

Therefore, natural gas, which can greatly reduce emissions of carbon dioxide and sulfur oxides, has been spotlighted as an alternative fuel for ships instead of ship oils such as bunker seed oil, which are widely used as fuel for ships.

Embodiments of the present invention are intended to be able to transport liquefied gas even in a general container ship. In addition, it is intended to be able to use the liquefied gas stored in the container-type liquefied gas tank as the fuel of the container vehicle.

According to an aspect of the present invention, the regasification means for generating a regasification gas by heat-exchanging the liquefied gas with the surrounding atmosphere, a gas-liquid separator for separating a liquid gas from the regasification gas to produce a fuel gas, the gas-liquid separator There is provided a fuel gas generating device including recirculation means for returning the liquid gas separated by the regasification means.

The regasification means includes a plurality of disk-type heat exchanger rotatably connected to one side and the other surface, the plurality of disk-type heat exchanger, the inlet hole is formed in the center of one surface and the outlet hole is formed in the edge portion of the other surface and When the inlet hole is formed in the edge portion of one side and the outlet hole is formed alternately in the center of the other surface, so that at least one of the plurality of disk-type heat exchanger is rotated relative to the adjacent arrangement, the outlet and adjacent The cross-sectional area of the passage formed by the inlet can be adjusted.

In this case, the plurality of disc heat exchangers may be provided with an adjustment lever for rotating each of the plurality of disc heat exchangers.

The disc heat exchanger includes a disc housing having the inlet hole formed on one surface thereof and the outlet hole formed on the other surface thereof, and a flow which extends a path through which the liquefied gas introduced into the inlet hole flows into the outlet hole. Path extension means may be included.

Here, the plurality of disk-type heat exchangers may be arranged in sequence from the long diameter to the short diameter.

The flow path extending means may be formed by winding a metal strap in one direction spiral or in another direction spiral.

The recirculation means may further include a compressor or a pump for compressing the liquid gas.

According to another aspect of the present invention, a fuel gas is supplied to a container-type housing, a pressure vessel installed in the housing and storing liquefied gas, and the liquefied gas discharged from a discharge valve installed in the housing and provided in the pressure vessel. A container type liquefied gas tank including a fuel gas generating device having the above-described configuration may be provided.

The housing may follow the standard of the container according to the ISO standard.

In this case, the container housing includes a support block and a support bracket for supporting the pressure vessel, the intermediate region of the pressure vessel is seated on the support block, both ends of the pressure vessel is the support bracket It can be formed to be supported by.

At this time, it may include an injection valve for injecting liquefied gas into the body of the pressure vessel.

At this time, it may further include a relief valve for preventing the pressure in the body of the pressure vessel is excessively increased.

According to still another aspect of the present invention, there is provided a container ship having at least one loading unit on which a plurality of containers are loaded, a double fuel engine configured to receive a liquid fuel and a gas fuel to generate a propulsion force, and the loading unit and the double fuel. And a container type liquefied gas tank including at least one fuel gas supply pipe connecting the engine, and a container type liquefied gas tank loaded on the loading unit and removably connected to the fuel gas supply pipe and having the characteristics as described above. One container ship may be provided.

Embodiments of the present invention can store the liquefied gas in a container tank that can be loaded in the container ship, it is possible to transport the liquefied gas even in a container ship without a special cargo hold.

In addition, embodiments of the present invention by adding a means for vaporizing the liquefied gas to the container-type liquefied gas tank, to use the liquefied gas stored in the container-type liquefied gas tank as a fuel for container transportation means such as container ships or container trailers Can be.

1 is a perspective view of a container-type liquefied gas tank according to an embodiment of the present invention.
2 is a view schematically showing a pressure vessel and a fuel gas generating device of a container type liquefied gas tank according to an embodiment of the present invention.
3 is a view showing a fuel gas generating device of a container type liquefied gas tank according to an embodiment of the present invention.
4 is an exploded perspective view of a disc heat exchanger.
FIG. 5 is a cross-sectional view of the portion indicated by B in FIG. 4. FIG.
6 is a view showing another example of the flow path extension means.
7 is a view showing another example of the flow path extension means.
8 is a cross-sectional view of the portion indicated by A in FIG. 3.
9 is a perspective view of a container ship having a container-type liquefied gas tank according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

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

1 illustrates a container type liquefied gas tank according to an embodiment of the present invention, and FIG. 2 schematically illustrates a pressure vessel and a fuel gas generating apparatus of a container type liquefied gas tank according to an embodiment of the present invention. have.

Referring to FIG. 1, a container type liquefied gas tank 1 according to an embodiment of the present invention may include a pressure vessel 100, a fuel gas generating device 200, and a container type housing 300.

2, the pressure vessel 100 of the container type liquefied gas tank (1 in FIG. 1) according to an embodiment of the present invention, the pressure vessel body 101, the injection valve 110, the discharge valve 120 And a relief valve 130 may be provided.

The pressure vessel body 101 is a portion in which the liquefied gas is stored, and a cylindrical pressure vessel made of thick steel may be used. Alternatively, a pressure resistant vessel made of a light metal such as aluminum or an aluminum alloy may be used as the pressure vessel body 101 to reduce the pressure vessel 100.

The injection valve 110 is for injecting liquefied gas into the pressure vessel body 101, and may be disposed on one side of the pressure vessel body 101 as shown in the drawing. It may be arranged in another location.

The relief valve 101 is for preventing the pressure in the pressure vessel body 101 from being excessively raised. The liquefied gas stored in the pressure vessel body 101 may be vaporized by heat transferred from the outside. If the pressure in the pressure vessel body 101 is excessively increased by the vaporized gas, the pressure vessel body 101 may be damaged or May explode.

Therefore, when the pressure in the pressure vessel body 101 rises above the preset safety range, the relief valve 101 is opened to discharge a portion of the vaporized liquefied gas so that the pressure in the pressure vessel body 101 is within the safety range. Can be maintained.

Discharge valve 120 is for discharging the liquefied gas stored in the pressure vessel body 101, the discharge valve 120 is connected to the fuel gas generating device 200 according to an embodiment of the present invention.

The fuel gas generator 200 according to an embodiment of the present invention changes the liquefied gas discharged from the discharge valve 120 into fuel gas. The fuel gas generator 200 will be described in detail with reference to FIGS. 3 to 5 and 8 below.

Referring back to FIG. 1, the pressure vessel 100 and the fuel gas generator 200 of the container type liquefied gas tank according to an embodiment of the present invention are installed in the container type housing 300.

The container housing 300 may include a side beam 310, a cross beam 320, a vertical beam 330, a support block 360, and a support bracket 340, 350, and 370.

The side beam 310 may be disposed in the longitudinal direction of the container housing 300, the cross beam 320 may be disposed in the width direction, and the vertical beam 330 may be disposed in the height direction. Therefore, the length of the side beam 310 is the length (L) of the container-shaped housing 300, the length of the cross beam 320 is the width (W), the length of the vertical beam 330 is the height (H) Can be

Here, the length (L), width (W) and height (H) of the container-type housing 300 is the length, width and width of the container (not shown) according to the standards of the International Organization for Standardization (ISO) and It can be manufactured to have a height. Alternatively, the container housing 300 may be manufactured to comply with the specifications of a particular country as needed.

That is, the container-type liquefied gas according to an embodiment of the present invention without manufacturing a separate device to a general container ship (not shown) by manufacturing the container-type housing 300 to meet the standard of ISO or the standard of a specific country The tank 1 can be loaded with other cargo. Therefore, even in a general container ship (not shown), it is possible to transport the liquefied gas using the container-type liquefied gas tank 1 according to an embodiment of the present invention.

The support block 360 and the support brackets 340 and 350 are for supporting the pressure vessel 100 installed in the container-type housing 300, and as shown, the intermediate region of the pressure vessel 100 is the support block 360. ), And both ends of the pressure vessel 100 may be supported by the support brackets 340 and 350. In addition, the fuel gas generator 200 installed in the container-type housing 300 may be supported by the support bracket 370.

Therefore, the container-type housing 300, even if the container-type liquefied gas (1) is loaded on the container ship (not shown) and shaken under the influence of waves or the like, the pressure vessel 100 and the fuel gas generating device 200 ) Can be supported stably.

3 is a fuel gas generating apparatus of a container type liquefied gas tank according to an embodiment of the present invention.

Referring to Figure 3, the fuel gas generating device 200 of the container type liquefied gas tank 1 according to an embodiment of the present invention, the liquefied gas inlet pipe 201, regasification means 202, regasification gas flow pipe 203, fuel gas supply pipe 205, recirculation means 207 and gas-liquid separator 208 may be included.

One end of the liquefied gas inlet pipe 201 is connected to the discharge valve (120 of FIG. 2) provided in the pressure vessel body (101 of FIG. 2) and the other end is connected to one side of the regasification means 202, pressure vessel The liquefied gas stored inside the main body 101 of FIG. 2 may be introduced into the regasification means 202 through the liquefied gas inlet pipe 201.

The regasification means 202 may cause the liquefied gas introduced through the liquefied gas inlet pipe 201 to be vaporized by heat exchange with the surrounding atmosphere so that the regasified gas is generated.

The regasification means 202 may include a plurality of disc type heat exchangers 210, 220, 230, 240, 250, 260 and a plurality of control levers 229, 249, 259. Here, the disc heat exchanger (210, 220, 230, 240, 250, 260) and the control lever (229, 249, 259) will be described in detail with reference to Figures 4 and 5 below.

One end of the regasification gas flow tube 203 may be connected to the other end of the regasification means 202, and the other end of the regasification gas flow tube 203 may be connected to the lower end of the gas-liquid separator 208. Accordingly, the regasification gas generated by the liquefied gas via the regasification means 202 may be flowed to the gas-liquid separator 208 by the regasification gas flow pipe 203.

The gas-liquid separator 208 may generate a gaseous fuel gas by separating the liquid gas contained in the regasification gas. One end of the fuel gas supply pipe 205 may be connected to the upper end of the gas-liquid separator 208 to allow the fuel gas to flow into the fuel gas supply pipe 205. Here, the gas-liquid separator 208 will be described with reference to FIG. 8 below.

The recirculation means 207 may return the liquid gas separated by the gas-liquid separator 208 to the regasification means 202. The recirculation means 207 may include return pipes 271 and 271 and a compressor 273.

One end of the return pipe 271 may be connected to one side of the gas-liquid separator 208, and the other end may be connected to an inlet of the compressor 273. One end of the return pipe 272 may be connected to the outlet of the compressor 273, and the other end of the return pipe 272 may be connected to the disc heat exchanger 210 of the regasification means 202.

Therefore, the liquid gas separated by the gas-liquid separator 208 flows to the compressor 273 through the return pipe 271 and is compressed, and then the disk heat exchanger of the regasification means 202 through the return pipe 272. May be returned to 210. The liquid gas returned to the disk heat exchanger 210 passes through the regasification means 202 and undergoes heat exchange with the surrounding atmosphere.

Here, although not shown, the compressor 273 may be replaced by a pump that pumps the liquid gas.

As described above, the fuel gas generating apparatus 200 according to an embodiment of the present invention generates the fuel gas by regasifying the liquefied gas introduced through the liquefied gas inlet pipe 201, and the generated fuel gas is a fuel. The gas supply pipe 205 may be flowed, and liquid gas not regasified in this process may be regasified again.

The fuel gas flowing into the fuel gas supply pipe 205 may be used as fuel such as an engine (not shown) or a boiler (not shown).

FIG. 4 is an exploded perspective view for explaining the structure of the disc heat exchanger included in the regasification means, and FIG. 5 is a cross-sectional view of the portion indicated by B in FIG. 4. The structure of a disc type heat exchanger is demonstrated with reference to FIGS.

Referring to FIG. 4, as described above, the regasification means 202 of FIG. 3 may include a plurality of disc type heat exchangers 210, 220, 230, and 240, 250, and 260 of FIG. 3.

The first disk type heat exchanger 210 of the plurality of disk type heat exchangers 210, 220, 230, and 240, 250, 260 of FIG. 3 is provided with a heat exchanger body 211 and a cover 216. The housing may be included, and the flow path extending means 215 installed in the above-described first disk housing may be further included.

The heat exchanger body 211 may have a shape of a disc-shaped container in which one surface is blocked and the other surface is open, and the cover 216 may be coupled to the other open surface of the heat exchanger body 211 described above. Therefore, when the heat exchanger body 211 and the cover 216 are combined, a first disc-shaped housing having a space therein may be formed.

An inlet hole 212 may be formed at the center of one surface of the heat exchanger body 211, a pinhole 217 may be formed at the center of the cover 216, and an outlet hole 219 at an edge of the cover 216. ) May be formed. That is, an inlet hole 212 may be formed on one surface of the first disc housing of the first disc heat exchanger 210, and an outlet hole 219 may be formed on the other surface thereof.

A liquefied gas inlet pipe 201 is connected to the inlet hole 212 of the first disk-type heat exchanger 210, so that liquefied gas can be introduced into the inlet hole 212, and the liquefaction introduced into the inlet hole 212. The gas may flow out through the outlet hole 219 through the inner space of the first disc-shaped housing.

The flow path extension means 215 may be installed in the first disc housing of the first disc heat exchanger 210. The flow path extension means 215 is for extending the flow path until the liquefied gas introduced into the inlet hole 212 flows to the outlet hole 219.

That is, when the path through which the liquefied gas flows is extended by the flow path extension means 215, the liquefied gas is exposed to the heat of the atmosphere while passing through the flow path extension means 215 between the heat exchanger body 211 and the cover 216. Since the time and area to be increased, the heat exchange efficiency between the liquefied gas and the atmosphere can be increased.

The second disk heat exchanger 220 of the plurality of disk heat exchangers 210, 220, 230, and 240, 250, and 260 of FIG. 3 includes a second disk having a heat exchanger body 221 and a cover 226 coupled thereto. The housing may be included, and the flow path extending means 225 installed in the above-described second disc housing may be further included.

The heat exchanger body 221 may have the shape of a disc-shaped container whose one side is blocked and the other side is open, and the cover 226 may be coupled to the open portion of the heat exchanger body 221 described above. Therefore, when the heat exchanger body 221 and the cover 226 are combined, a second disc-shaped housing having a space therein may be formed.

An inlet hole 223 may be formed at an edge portion of one surface of the heat exchanger body 221, and a pinhole 222 may be formed at a central portion thereof. A hollow tubular connector 227 having an outlet hole 229 formed therein may be protruded at a central portion of the cover 226, and a flange 228 may protrude radially at an end of the connector 227. . That is, an inflow hole 223 may be formed on one surface of the second disc housing of the second disc heat exchanger 220, and an outlet hole 229 may be formed on the other surface thereof.

Here, the fin hole 217 formed in the cover 216 of the first disk heat exchanger 210 and the pin hole 222 formed in the heat exchanger main body 221 of the second disk heat exchanger 220 may include a fin ( 224 may be installed through. Thus, the first disk heat exchanger 210 and the second disk heat exchanger 220 may be relatively rotatably coupled by the fin 224.

At this time, the outlet hole 219 formed on the other surface of the first disk heat exchanger 210 and the inlet hole 223 formed on one surface of the second disk heat exchanger 220 are respectively located at the corresponding positions from the fin 224. Is formed, the liquefied gas flowing into the outlet hole 219 may be introduced through the inlet hole 223.

However, since the first disk heat exchanger 210 and the second disk heat exchanger 220 are rotatable relative to each other, as described above, the first disk heat exchanger 210 is a second disk heat exchanger ( When rotated relative to the 220, the cross-sectional area of the passage formed by the outlet hole 219 and the inlet hole 223 may be narrowed or widened again.

That is, since the cross-sectional area of the passage described above may change according to the relative rotation of the first disc heat exchanger 210 and the second disc heat exchanger 220, the amount of liquefied gas passing through the passage may be adjusted. have.

Meanwhile, the flow path extension means 225 may also be installed in the second disc housing of the second disc heat exchanger 220. The flow path extension means 215 is for extending the flow path until the liquefied gas introduced into the inlet hole 223 flows to the outlet hole 229 as described above.

Here, the flow path extension means 215 of the first disk type heat exchanger 220 may be formed to have a one-way spiral, and the flow path extension means 225 of the second disk type heat exchanger 230 may be the other direction spiral. It may be formed to have. This is to maintain the rotational direction of the liquefied gas passed through the first disk type heat exchanger 220 in the second disk type heat exchanger 230. The liquefied gas is mixed with the regasified liquefied gas and the liquid liquefied gas. The generation of turbulence is suppressed in the course of the flow of gas, it is possible to obtain the effect of reducing the occurrence of noise.

The other surface of the second disk heat exchanger 220 may be rotatably coupled to the third disk heat exchanger 230. That is, the cover 226 of the second disc heat exchanger 220 and one surface of the third disc heat exchanger 230 may be rotatably coupled. This will be described with reference to FIG. 5.

4 and 5 together, the third disc-type heat exchanger 230 may include a third disc-shaped housing in which the heat exchanger body 231 and the cover 236 are combined, and within the third disc-shaped housing. Flow path extension means 235 is installed may be further included.

The heat exchanger body 231 of the third disc heat exchanger 230 is the same as the heat exchanger body 211 of the first disc heat exchanger (211 of FIG. 4). It may have a shape, and the cover 236 may be coupled to the open portion of the heat exchanger body 231. Therefore, when the heat exchanger body 231 and the cover 236 are combined, a third disc-shaped housing having a space formed therein may be formed as shown.

An inlet hole 234 may be formed at a central portion of one surface of the heat exchanger body 231. Here, the inlet hole 234 may be inserted into the connecting pipe portion (227 of FIG. 4) formed in the cover 226 of the second disk type heat exchanger (220 of FIG. 4). At this time, the connecting pipe portion (227 of Figure 4) is formed so that the flange 228 can be coupled to the end of the connecting pipe portion (227 of Figure 4) in the state inserted into the inlet hole (234). At this time, the stepped portion may be formed in the side of the inlet hole 234 so that the flange coupled to the end of the connection pipe portion is inserted and rotated.

Accordingly, the cover 226 of the second disc heat exchanger (220 in FIG. 4) is rotatable with the heat exchanger body 231 of the third disc heat exchanger 230 by the connecting pipe part 227. Can be connected. In addition, the liquefied gas discharged to the outlet hole 229 through the second disc heat exchanger (220 of FIG. 4) may be introduced through the inlet hole 234 of the third disc heat exchanger 230.

A pinhole 237 may be formed at the center of the cover 236 of the third disc type heat exchanger 230, and an outlet hole 239 may be formed at an edge portion of the cover 236. That is, an inlet hole 234 may be formed on one surface of the third disc housing of the third disc heat exchanger 230, and an outlet hole 239 may be formed on the other surface thereof. Therefore, the liquefied gas introduced into the inlet hole 234 may flow out through the outlet hole 239 through the inner space of the third disc-shaped housing.

The flow path extension means 235 may be installed in the above-described inner space of the third disc-shaped housing including the heat exchanger body 231 and the cover 236. The flow path extension means 215 is for extending the path through which the liquefied gas introduced through the inlet hole 234 flows to the outlet hole 239. Although not shown in detail, the flow path extension means 235 may have a one-way spiral like the flow path extension means 215 of the first disc type heat exchanger 210 described above.

Fins (not shown) are coupled to the pinholes 237 formed in the cover 236 of the third disc heat exchanger 230, and the fourth disc heat exchanger (240 in FIG. 3) is formed by the fins (not shown). Can be rotatably coupled.

Although not shown, a flow path extension means may be installed in the fourth disc heat exchanger (240 of FIG. 3), which means that the flow path extension means 225 of the second disc heat exchanger (220 of FIG. 3) may be provided. It may have a spiral in the other direction as shown.

The fifth disk type heat exchanger 250 of FIG. 3 is rotatably connected to the fourth disk type heat exchanger 240 of FIG. 3, and the sixth disk type heat exchanger 260 of FIG. 3 is the fifth disk type heat exchanger. 3 may be rotatably connected to the device 260 of FIG. 3.

In this case, the fourth disk-type heat exchanger 240 (in FIG. 3) may have an inlet hole (not shown) formed at an edge of one surface thereof, and an outlet hole (not shown) formed at the center of the other surface thereof. An inlet hole (not shown) of the fourth disc type heat exchanger 240 of FIG. 3 may be formed at a position corresponding to the outlet hole 239.

An inlet hole (not shown) may be formed in a central portion of one surface of the fifth disc type heat exchanger 250 of FIG. 3, and an outlet hole (not shown) may be formed in an edge portion of the other surface of the fifth disc type heat exchanger 250. An inlet hole (not shown) may be formed at an edge portion of one surface of 260 of FIG. 3, and an outlet hole (not shown) may be formed at the center of the other surface. This outflow hole (not shown) may be connected to the regasification gas flow pipe (203 of FIG. 3).

Referring to FIG. 3 again, as described above, the plurality of disk-type heat exchangers 210, 220, 230, 240, 250, and 260 included in the regasification means 202 may rotate on one surface and the other surface. Can be connected.

As described with reference to FIGS. 4 and 5, the first disk heat exchanger 210 and the third disk heat exchanger among the plurality of disk heat exchangers 210, 220, 230, 240, 250, and 260. In the 230 and the fifth disk type heat exchanger 250, inlet holes (212 in Fig. 4, 234 in Fig. 5, not shown) are formed in the center of one surface, respectively, and outlet holes (Fig. 4, 219, 239 (not shown) may be formed respectively.

In addition, the second disc heat exchanger 220, the fourth disc heat exchanger 240, and the sixth disc heat exchanger 260 are inlet holes (223 of FIG. 4, the rest are not shown) ) Is formed, and outflow holes (229 of FIG. 4, the rest of which are not shown) may be formed in the center of the other surface.

That is, the plurality of disk-type heat exchangers (210, 220, 230, 240, 250, 260) included in the regasification means 202 is formed in the inlet hole in the center of one surface and the outlet hole formed in the edge portion of the other surface (210 , 230, 250 and the inlet hole is formed in the edge portion of one surface and the outlet hole formed in the center of the other surface (220, 240, 260) may be alternately arranged.

Therefore, as described above, when a plurality of disk-type heat exchangers 210, 220, 230, 240, 250, and 260 disposed adjacently rotate relatively, a cross-sectional area of a passage through which liquefied gas passes may change.

On the other hand, the plurality of disk-type heat exchanger (210, 220, 230, 240, 250, 260) as shown in the long diameter from the shorter one may be arranged sequentially. This is to increase the heat exchange efficiency between the liquefied gas and the atmosphere, and to increase the area of the surface of the plurality of disk-type heat exchangers (210, 220, 230, 240, 250, 260) in contact with the atmosphere.

For reference, in order to increase the area in which the surfaces of the plurality of disk heat exchangers 210, 220, 230, 240, 250, and 260 are in contact with the atmosphere, the plurality of disk heat exchangers 210, 220, Adjacent ones 230, 240, 250, and 260 may have different diameters from each other.

The surface of the heat exchanger body (211, 221, 231 and others of FIG. 4) is not shown in order to improve heat exchange efficiency of the plurality of disc heat exchangers 210, 220, 230, 240, 250, and 260. There may be provided a plurality of heat radiation fins (not shown) or to form an uneven portion (not shown) to increase the contact area with the atmosphere.

The disk housings of the plurality of disk heat exchangers 210, 220, 230, 240, 250, 260 and flow path extension means (215, 225 of FIG. 4, 235 of FIG. 5, others not shown) are liquefied. In order to improve the heat exchange efficiency between the gas and the atmosphere can be made of a high thermal conductivity material.

However, the disk housings and the flow path extension means (215, 225 of Figure 4, 235 of Figure 5, the rest are not shown) can be in direct contact with the cryogenic liquefied gas, so select a material that can withstand cryogenic temperatures Can be used.

In particular, the flow path extension means (215, 225 of FIG. 4, 235 of FIG. 5, the rest is not shown) is preferably moldability and should be able to minimize the deformation and the like caused by the flow of liquefied gas, aluminum Metal straps, such as alloys or stainless steels, may be used that are formed by winding in one direction spiral or the other direction spiral.

In addition, moisture included in the atmosphere may be frozen between adjacent ones of the plurality of disc heat exchangers 210, 220, 230, 240, 250, and 260. When moisture freezes, adjacent ones of the plurality of disc type heat exchangers 210, 220, 230, 240, 250, and 260 may not rotate relatively, and thus, it may be difficult to control the flow rate of the liquefied gas. Therefore, the surfaces of the plurality of disc heat exchangers 210, 220, 230, 240, 250, and 260 may be coated with a water repellent material so that condensed water does not adhere.

Among the plurality of disk heat exchangers 210, 220, 230, 240, 250, and 260, the second disk heat exchanger 220, the fourth disk heat exchanger 240, and the fifth disk heat exchanger 250 are included. The control levers 229, 249 and 259 may be installed respectively.

The control levers 229, 249, and 259 are for rotating the second disc heat exchanger 220, the fourth disc heat exchanger 240, and the fifth disc heat exchanger 250, respectively. The liquefied gas introduced through the 201 is to adjust the amount of regasification gas generated while passing through the regasification means 202.

That is, the engine (not shown) through the fuel gas supply pipe 205 by adjusting the relative rotation of the plurality of disk heat exchangers (210, 220, 230, 240, 250, 260) included in the regasification means (202) It is possible to adjust the amount of fuel gas supplied to the back.

Surface temperatures of the plurality of disc heat exchangers 210, 220, 230, 240, 250, and 260 may be cryogenic. Accordingly, the handles 229, 249, and 259 may be manufactured using synthetic resins having low thermal conductivity, or the ends thereof, so that the operator's hand and the like are not exposed to cryogenic temperatures.

Alternatively, although not shown, the relative degree of rotation between the plurality of disk-type heat exchangers 210, 220, 230, 240, 250, and 260 is automatically changed according to the amount of fuel gas required by an engine (not shown). Can be adjusted.

For example, the plurality of disc heat exchangers 210, 220, 230, according to signals of a flow sensor (not shown) and a flow sensor (not shown) for measuring the flow rate of the fuel gas to the fuel gas supply pipe 205. Heat exchanger rotating means (not shown) for rotating a part of 240, 250 and 260 is installed, and the heat exchanger rotating means is operated so that the amount of fuel gas measured by the flow sensor (not shown) falls within a set range. You can do that.

6 shows another example of the flow path extension means, and FIG. 7 shows another example of the flow path extension means.

Referring to FIG. 6, another example 215a of flow path extension means is provided in the heat exchanger body 211a. An inlet hole 212a is formed in the heat exchanger body 211a, and liquefied gas may be introduced into the heat exchanger body 211a through the inlet hole 212a.

Another example of the flow path extension means 215a extends a path through which the liquefied gas introduced into the inlet hole 212a flows, in which the liquefied gas flows through the entire area of the space inside the heat exchanger body 211a. In particular, it is possible to increase the heat exchange efficiency of the atmosphere and the liquefied gas around the heat exchanger body (211a) by flowing to the edge portion.

Referring to FIG. 7, another example 215b of flow path extension means is installed in the heat exchanger body 211b. An inlet hole 212b is formed in the heat exchanger body 211b so that the liquefied gas may be introduced into the heat exchanger body 211b through the inlet hole 212b.

Another example of the flow path extension means 215b also extends the path through which the liquefied gas flowing into the inlet hole 212b flows, as in the other example 215a of the flow path extension means described with reference to FIG. 6. Another example of the flow path extension means 215b also allows the liquefied gas to flow through the entire area of the internal space of the heat exchanger body 211b, in particular to the edge, so that the atmosphere and the liquefied gas around the heat exchanger body 211b are allowed to flow. Can increase the heat exchange efficiency.

Another example 215a of the flow path extension means described with reference to FIGS. 6 and 7 and another example 215b of the flow path extension means are described above with respect to the flow path extension means (215, 225 of FIG. 4, 235 of FIG. 5). , Others not shown) can be substituted.

FIG. 8 shows a cross section of the portion marked A in FIG. 3.

Referring to FIG. 8, the gas-liquid separator 208 included in the fuel gas generator (200 of FIG. 1) of the container-type liquefied gas tank (1 of FIG. 1) according to an embodiment of the present invention includes a gas-liquid separator body 281. ) And fan 285 may be included.

The bottom surface of the gas-liquid separator body 281 is connected to the flow tube 203, the end of the flow tube 203 may be installed by a predetermined height (h) higher than the bottom surface of the gas-liquid separator body 281. In addition, a liquid gas discharge hole 282 may be formed below the edge portion of the gas-liquid separator body 281, and one end of the return pipe 271 may be connected to the liquid gas discharge hole 282.

A fan 285 may be installed above the gas-liquid separator body 281, and one end of the fuel gas supply pipe 205 may be connected to the fan 285.

Therefore, when the liquefied gas passes through the regasification means (202 in FIG. 3) and the generated regasified gas flows into the gas-liquid separator main body 281 through the flow pipe 203, the gaseous regasification gas is the gas-liquid separator main body 281 And flows to the fuel gas supply pipe 205.

The liquid gas included in the regasification gas is accumulated at the bottom of the gas-liquid separator main body 281 and is introduced into the return pipe 271 through the liquid gas discharge hole 282. At this time, since the fuel gas supply pipe 205 is installed higher than the bottom surface of the gas-liquid separator body 281, the liquid gas can be prevented from flowing back to the fuel gas supply pipe 205.

The fan 285 is for smoothly flowing the regasification gas into the fuel gas supply pipe 205, and the gaseous state of the regasification gas is more easily moved to the fuel gas supply pipe 205 by the operation of the fan 285. Can be.

And, although not shown in detail, the fan 285 and the fuel gas supply pipe 205 may be detachably coupled. That is, when all the liquefied gas stored in the container-type liquefied gas tank (1 in FIG. 1) according to an embodiment of the present invention, the fuel gas supply pipe 205 is separated from the fan 285 and then another container-type liquefaction The fuel gas may be continuously supplied to the fuel gas supply pipe 205 by connecting to the gas tank.

Figure 9 shows a container ship having a container-type liquefied gas tank according to an embodiment of the present invention.

9, a container ship 10 having a container type liquefied gas tank according to an embodiment of the present invention includes a hull 11, a plurality of partitions 12 and 12a, an engine room 14, and fuel gas. Supply pipe connection means 15 and conveying means 16 may be included. The hull 11 may include loading portions 13 and 13a partitioned into a plurality of partitions 12 and 12a.

The hull 11 may be formed with at least one loading portion into which the plurality of containers 1 and 3 may be stacked. As shown in the drawings, a plurality of loading portions 13 and 13a may be formed.

The engine room 14 is provided with an engine (not shown) for generating propulsion force, which includes liquid fuel such as bunker seed oil or diesel oil and gaseous fuel such as natural gas or petroleum gas. Dual fuel diesel engines, all of which can be used as fuel, can be used.

Container-type liquefaction according to an embodiment of the present invention is provided in a portion 13 of the plurality of loading portions 13 and 13a provided in the container ship 10 having the container-type liquefied gas tank according to an embodiment of the present invention. The gas tank 1 may be loaded, and the remainder 13a may be loaded with a general cargo container 3.

At this time, the connection gas supply pipe (205 of FIG. 3) between the loading unit 13 and the engine room 14 in which the container-type liquefied gas tank 1 is loaded according to an embodiment of the present invention to the engine room 14. Fuel gas supply pipe connecting means 15 for connecting may be installed.

Although not shown in detail, the fuel gas supply pipe connection means 15 is formed so that the connection gas supply pipe (205 of FIG. 3) can pass therethrough, and is supplied from the container type liquefied gas tank 1 according to an embodiment of the present invention. The fuel gas can be supplied to an engine (not shown) installed in the engine room 14 through the fuel gas supply pipe 205 of FIG. 3.

Since the plurality of container type liquefied gas tanks 1 may be loaded in the loading part 13, after the liquefied gas stored in one container type liquefied gas tank 1 is exhausted, the fuel is stored in another container type liquefied gas tank 1. By moving and connecting the gas supply pipe 205 of FIG. 3, it is possible to continuously supply fuel to the engine (not shown).

In this case, when only one fuel gas supply pipe 205 of FIG. 3 is used, fuel supply to the engine may be stopped while replacing the container type liquefied gas tank 1 as described above, and thus, several container type liquefied gases may be used at the same time. The tank 1 can be connected and used.

That is, a plurality of fuel gas supply pipes (205 of FIG. 3) and fuel gas supply pipe connecting means 15 are respectively provided, and a plurality of container type liquefied gas tanks 1 are connected to each other to sequentially consume the stored liquefied gas. It is possible to keep the fuel gas supplied to the engine by replacing it with.

At this time, the container-type liquefied gas tank 1 is exhausted all the liquefied gas can be moved to another position of the loading portion 13 or another loading portion 13a by using the conveying means 16, a plurality of container type The container-type liquefied gas tank 1, which intends to use the stored liquefied gas in the liquefied gas tank 1 as fuel for an engine (not shown), is moved to the loading part 13 adjacent to the engine room 14 to supply the fuel gas supply pipe. (205 of FIG. 3) can be easily connected.

Since the container type liquefied gas tank 1 can also be loaded in the loading portion 13a on which the general cargo container 3 is loaded, a large amount of container ships having a container type liquefied gas tank according to an embodiment of the present invention. It can transport liquefied gas.

On the other hand, the fuel gas generating apparatus according to an embodiment of the present invention described above may be installed in the container-type liquefied gas tank as in this embodiment, but configured to generate fuel gas, independent of the container-type liquefied gas tank Of course, it can also be used as an apparatus for generating fuel gas in the form.

In addition, while the fuel gas generating device and the container type liquefied gas tank and the container ship having the same have been described above, the spirit of the present invention is not limited to the embodiments presented herein, Those skilled in the art who understand the spirit of the invention can easily suggest other embodiments by the addition, modification, deletion, addition, etc. of the elements within the scope of the same spirit, but this also falls within the spirit of the invention. .

1: container type liquefied gas tank 3: cargo container
10: container ship with container type liquefied gas tank
11: hull 12, 12a: bulkhead
13, 13a: loading section 14: engine room
15: fuel gas supply pipe connecting means 16: transport means
100: pressure vessel 101: pressure vessel body
200: fuel gas generator 201: liquefied gas inlet pipe
202: regasification means 203: regasification gas flow tube
205: fuel gas supply pipe 207: recirculation means
208: gas-liquid separator 300: container type housing

Claims (13)

Regasification means for exchanging liquefied gas with the surrounding atmosphere to produce regasified gas;
A gas-liquid separator that separates liquid gas from the regasification gas to generate fuel gas; And
And recirculating means for returning the liquid gas separated by the gas-liquid separator to the regasification means.
The method of claim 1,
The regasification means,
One side and the other side includes a plurality of disk-type heat exchanger rotatably connected to each other,
The disk-type heat exchanger is alternately arranged that the inlet hole is formed in the center of one side and the outlet hole is formed in the edge portion of the other surface and the inlet hole is formed in the edge portion of the one surface and the outlet hole is formed in the center of the other surface,
At least one of the plurality of disk-type heat exchanger is relatively rotatable relative to those disposed adjacent, the fuel gas generating device characterized in that the cross-sectional area of the passage formed by the outlet hole and the adjacent inlet hole is changed .
The method of claim 2,
And the regulating lever for rotating each of the plurality of disc heat exchangers is provided in the plurality of disc heat exchangers.
The method of claim 3,
The disk heat exchanger,
A disk-shaped housing in which the inflow hole is formed on one surface and the outflow hole is formed on the other surface; And
And a flow path extension means installed in the disc housing and extending a path through which the liquefied gas introduced into the inflow hole flows to the outflow hole.
5. The method of claim 4,
The plurality of disk heat exchanger.
A fuel gas generating device, characterized in that the ones having the shortest diameter are arranged sequentially from the one having the longest diameter.
5. The method of claim 4,
The flow path extending means,
A fuel gas generating device, characterized in that the metal strap is wound in one direction spiral or the other direction spiral.
The method of claim 1,
The recirculation means,
Fuel gas generating apparatus further comprises a compressor or a pump for compressing the liquid gas.
Container-type housings;
A pressure vessel installed in the housing and storing liquefied gas; And
A fuel gas generating device according to any one of claims 1 to 7, which is installed in the housing and converts the liquefied gas discharged from the discharge valve provided in the pressure vessel into fuel gas. Container type liquefied gas tank.
9. The method of claim 8,
The housing is a container-type liquefied gas tank, characterized in that the standard of the container according to the ISO standard.
9. The method of claim 8,
Is installed inside the container housing includes a support block and a support bracket for supporting the pressure vessel,
The intermediate region of the pressure vessel is seated in the support block,
Both ends of the pressure vessel is formed to be supported by the support bracket, container type liquefied gas tank.
9. The method of claim 8,
Container-type liquefied gas tank including an injection valve for injecting liquefied gas into the body of the pressure vessel.
9. The method of claim 8,
The container-type liquefied gas tank further comprises a relief valve for preventing excessive pressure in the body of the pressure vessel.
A container ship having at least one stacking unit on which a plurality of containers are stacked,
A dual fuel engine for receiving propulsion by receiving liquid fuel and gas fuel;
At least one fuel gas supply pipe connecting the loading unit and the dual fuel engine; And
A container ship having a container-type liquefied gas tank, which is loaded on the loading unit and detachably connected to the fuel gas supply pipe, and includes a container-type liquefied gas tank according to claim 8.

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