A liquefied natural gas ship filling station

Abstract

The present invention provides a liquefied natural gas ship filling station, comprising a first filling station and a second filling station. The first liquid collecting pan in the first filling station is installed above a storage room, and the second liquid collecting pan in the second filling station is installed on the surface of the main deck of the ship. Therefore, the liquefied natural gas ship filling station provided by the present invention can be adapted to docks of different heights; in addition, by integrating a water curtain pipe on the liquid collecting pan, the problem of narrow layout and construction space is solved; in the first filling station, a combination of a water curtain pipe and a protective layer is used to protect the ship, thereby improving safety; in the second filling station, a combination of bolt connection and sleeve connection is used to install the second liquid collecting pan on the main deck of the ship, thereby avoiding the problem of difficulty in manual operation caused by the narrow space.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a liquefied natural gas ship filling station. Background Art

[0002] With the continuous progress of society, the continuous development of the shipping industry, and the increasing concern for the living environment, people's requirements for carbon emissions are becoming increasingly stringent. Ships are also shifting from ordinary ship types such as bulk carriers to complex and diverse high-value-added ships. In recent years, the rapid development of liquefied natural gas (LNG) and dual-fuel ships has been particularly prominent. High and low-level loading and unloading stations, liquid collection trays, and water curtain pipes are important devices in LNG and dual-fuel ships. Their function is to serve as fueling stations for loading and unloading ships and prevent ultra-low temperature cargo liquefied natural gas (LNG) from dripping onto the carbon steel plates of the hull, causing cracking and damage to the steel plates. Considering the economic and practical aspects, it is impossible to replace all the hull steel plates with ultra-low temperature resistant nickel steel plates or stainless steel plates. At the same time, with the release of the new version of the LNG ship loading and unloading terminal design guidelines by the Oil Companies International Maritime Forum (OCIMF), the area protected by the liquid collection pan is three times larger than before. Therefore, the size of the liquid collection pan has changed from short to long and from narrow to wide, but the layout and construction space have become more cramped and narrow. How to design and fix the liquid collection pan and integrate the water curtain pipe into the liquid collection pan becomes crucial. Summary of the Invention

[0003] In view of the shortcomings of the prior art mentioned above, the present invention provides a liquefied natural gas ship filling station, including a first filling station and a second filling station. The first liquid collecting tray in the first filling station is installed above the storage room, and the second liquid collecting tray in the second filling station is installed on the surface of the main deck of the ship. Therefore, the liquefied natural gas ship filling station provided by the present invention can be adapted to docks of different heights; in addition, by integrating the water curtain pipe on the liquid collecting tray, the problem of narrow layout and construction space is solved; in the first filling station, the ship is protected by combining the water curtain pipe and the protective layer, thereby improving safety; in the second filling station, the second liquid collecting tray is installed on the main deck of the ship by combining bolt connection and socket connection, thereby avoiding the problem of difficulty in manual operation caused by the narrow space.

[0004] To achieve the above-mentioned and other related objectives, the present invention provides a liquefied natural gas ship filling station, comprising:

[0005] The first filling station includes a storage chamber, a first liquid collection tray, and a first water curtain pipe, wherein the storage chamber is arranged on the main deck of the vessel; the first liquid collection tray is arranged on the top of the storage chamber, and the first liquid collection tray is connected to the top of the storage chamber via a plurality of first connecting members; the first water curtain pipe is arranged on the side wall of the storage chamber, and the side wall of the storage chamber is further coated with a protective layer;

[0006] The second filling station includes a second liquid collecting tray and a second water curtain pipe. The second liquid collecting tray is arranged on the main deck of the ship. The second liquid collecting tray is connected to the main deck of the ship through multiple first connecting parts and multiple second connecting parts; the second water curtain pipe is arranged on the side of the second liquid collecting tray close to the outer plate of the hull.

[0007] Optionally, the first filling station further includes:

[0008] a first liquid phase pipe, arranged parallel to and above the first liquid collecting tray and extending in a first direction, for filling the ship with liquefied natural gas;

[0009] The first gas phase pipe is arranged in parallel with the first liquid phase pipe and is used to discharge gaseous natural gas from the ship.

[0010] Optionally, the second filling station further includes:

[0011] a second liquid phase pipe, arranged parallel to and above the second liquid collecting tray, extending along the first direction, and used for filling liquefied natural gas into the ship;

[0012] a third liquid phase pipe, arranged in parallel with the second liquid phase pipe, for filling the ship with liquefied natural gas;

[0013] The second gas phase pipe is arranged in parallel with the third liquid phase pipe and between the second liquid phase pipe and the third liquid phase pipe, and is used to discharge gaseous natural gas from the ship.

[0014] Optionally, the bottom of the second liquid collection tray includes two first areas and one second area, the first areas are used to install a plurality of first connecting members arranged in an array, and the second areas are used to install a plurality of second connecting members arranged in an array; and in a second direction perpendicular to the first direction, the second area is located between the two first areas.

[0015] Optionally, the first connecting member includes a first supporting foot and a second supporting foot, flanges are welded to the opposite surfaces of the first supporting foot and the second supporting foot are connected by bolts.

[0016] Optionally, the second connecting member includes:

[0017] a sleeve fixed to the bottom of the second liquid collecting tray;

[0018] The embedded pipe is fixed on the main deck of the ship and embedded in the sleeve to form a second connecting piece.

[0019] Optionally, the first water curtain pipe is fixed to the side wall of the storage chamber through a first bracket, the first bracket is arranged parallel to the first liquid collection tray, and the first water curtain pipe is arranged on the lower surface of the first bracket.

[0020] Optionally, a plurality of water outlet holes are evenly provided on the first water curtain pipe, and the plurality of water outlet holes face the side wall of the storage chamber and are arranged along the axial direction of the first water curtain pipe.

[0021] Optionally, the second water curtain pipe is fixed to the second liquid collecting tray via a second bracket, the second bracket is arranged parallel to the hull outer plate, and the second water curtain pipe is arranged on a side of the second bracket facing the second liquid collecting tray.

[0022] Optionally, a baffle is further provided below the second water curtain pipe, and the baffle is installed at the bottom of the second liquid collecting tray.

[0023] Optionally, a plurality of water outlet holes are evenly arranged on the second water curtain pipe, and the plurality of water outlet holes face the baffle and are arranged along the axial direction of the second water curtain pipe.

[0024] The liquefied natural gas ship filling station provided by the present invention has at least the following beneficial effects:

[0025] The liquefied natural gas ship filling station provided by the present invention includes a first filling station and a second filling station. The first liquid collecting tray in the first filling station is installed above the storage room, and the second liquid collecting tray in the second filling station is installed on the surface of the main deck of the ship. Therefore, the liquefied natural gas ship filling station provided by the present invention can be adapted to docks of different heights; in addition, by integrating the water curtain pipe on the liquid collecting tray, the problem of narrow layout and construction space is solved; in the first filling station, the ship is protected by combining the water curtain pipe and the protective layer, thereby improving safety; in the second filling station, the second liquid collecting tray is installed on the main deck of the ship by combining bolt connection and socket connection, thereby avoiding the problem of difficulty in manual operation caused by the narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A side view of a first liquefied natural gas ship filling station provided as an embodiment is shown.

[0027] Figure 2 Shown is a structural schematic diagram of the first connecting member in an embodiment.

[0028] Figure 3 Shown is a schematic structural diagram of a second filling station in a liquefied natural gas ship filling station provided in an embodiment.

[0029] Figure 4 Display as Figure 3 AA cross-section diagram.

[0030] Figure 5 Shown is a schematic structural diagram of the second connecting member in the embodiment.

[0031] Component number description

[0032] 100 First filling station 15 double board

[0033] 200 Second filling station 16 First bracket

[0034] 10 Ship's main deck 21 Second liquid collection tray

[0035] 11 Storage Room 211 First Area

[0036] 111 first side wall 212 second area

[0037] 112 Second side wall 22 Second water curtain tube

[0038] 12 First liquid collecting tray 23 Second connecting piece

[0039] 13 First water curtain tube 231 casing

[0040] 14 First connecting member 232 embedded tube

[0041] 141 First support leg 24 Second support

[0042] 142 Second support leg 25 baffle

[0043] 143 Flange 30 Hull outer plating

[0044] 144 Bolt 1000 Water outlet

[0045] 145 gasket DETAILED DESCRIPTION

[0046] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0047] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Although the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation, the form, quantity, positional relationship and proportion of each component in actual implementation can be changed at will under the premise of realizing the technical solution of this party, and the component layout form may also be more complicated.

[0048] Example

[0049] This embodiment provides a liquefied natural gas (LNG) ship refueling station, comprising a first refueling station 100 and a second refueling station 200, adjacently located on the ship's main deck. In this embodiment, the first refueling station 100 is located on both sides of the ship, and the second refueling station 200 is similarly located on both sides of the ship. The first refueling station 100 is located 80.6 meters along the ship's length, and the second refueling station 200 is located 89.2 meters along the ship's length.

[0050] like Figure 1 As shown, the first filling station 100 includes a storage chamber 11 , a first liquid collection tray 12 and a first water curtain pipe 13 .

[0051] like Figure 1 As shown, storage chamber 11 is disposed on the main deck 10 of the vessel. The sidewalls of storage chamber 11 include a first sidewall 111 and a second sidewall 112. First sidewall 111 forms an angle of less than 90° with the bottom of first drip tray 12, while second sidewall 112 is perpendicular to the bottom of first drip tray 12. In this embodiment, storage chamber 11 is approximately 4800 mm high, 4100 mm wide, and 4800 mm long.

[0052] like Figure 1 As shown, the first side wall 111 of the storage chamber 11 is coated with a protective layer (not shown). This protective layer is made of low-temperature resistant paint to prevent low-temperature liquefied natural gas from dripping onto the first side wall 111 and causing damage. In this embodiment, the low-temperature resistant paint is Chartek 1620CSP. The maximum residence time of liquefied natural gas (approximately -163°C) on this paint is 10 minutes. The application temperature of this paint is greater than or equal to -29°C, and the operating environment temperature of this paint is approximately 25°C. This paint is suitable for coating steel plates with a thickness of at least 8.5 mm.

[0053] like Figure 1 As shown, the first liquid collecting pan 12 is provided on the top of the storage chamber 11. The first liquid collecting pan 12 is used to collect the liquefied natural gas leaked during the filling process. In this embodiment, the weight of the first liquid collecting pan 12 is about 15.6 tons, and the strength is between 0.75 tons / m 2 Up to 1.25t / m 2 .

[0054] like Figure 1 As shown, the first liquid collecting tray 12 is connected to the top of the storage chamber 11 through a plurality of first connecting members 14. A composite plate 15 is welded to the top of the storage chamber 11. The plurality of first connecting members 14 are arranged on the surface of the composite plate 15 and are arranged in an array at the bottom of the first liquid collecting tray 12. Specifically, the plurality of first connecting members 14 are arranged along the first direction ( Figure 1 The X-axis direction shown in FIG1 is evenly arranged, and in a second direction perpendicular to the first direction ( Figure 1 In the Y-axis direction shown in FIG, the plurality of first connecting members 14 are arranged in at least two rows. In an optional embodiment, the plurality of first connecting members 14 are arranged in the second direction ( Figure 1 The first connecting members 14 are arranged in two rows in the Y-axis direction (as shown), and the two rows of first connecting members 14 are arranged near the edge of the first liquid collecting tray 12.

[0055] like Figure 2 As shown, the first connecting member 14 includes a first supporting leg 141 and a second supporting leg 142 disposed opposite each other. The first supporting leg 141 is welded to the bottom of the first liquid collection tray 12, and the second supporting leg 142 is welded to the surface of the doubler plate 15. Flanges 143 are welded to the opposing surfaces of the first and second supporting legs 141, 142, connecting the first and second supporting legs 141, 142 via bolts 144. A gasket 145 is also disposed between the two opposing flanges 143. In this embodiment, the first and second supporting legs 141, 142 are constructed from stainless steel pipes with an outer diameter of 180 mm, and the gasket 145 is constructed from polytetrafluoroethylene.

[0056] like Figure 1 As shown, the first water curtain pipe 13 is fixed to the first side wall 111 of the storage chamber by a first bracket 16. The first bracket 16 is arranged parallel to the first liquid collecting tray 12, and the first water curtain pipe 13 is arranged on the lower surface of the first bracket 16. The first water curtain pipe 13 is evenly provided with a plurality of water outlet holes 1000. The plurality of water outlet holes 1000 face the first side wall 111 of the storage chamber and are arranged along the axial direction of the first water curtain pipe 13 ( Figure 1 The water flowing out of the water outlets 1000 flows through the sidewalls of the storage chamber 11, protecting the outer plating of the entire filling area. In this embodiment, the first water curtain pipe 13 is installed approximately 1650 mm from the main deck 10 of the vessel. The first water curtain pipe 13 has an outer diameter of 114 mm, a wall thickness of 4 mm, and is made of 316L stainless steel. The multiple water outlets 1000 are spaced 50 mm apart, and the aperture of each water outlet 1000 is 10 mm, ensuring uniform water flow from each outlet 1000.

[0057] As an example, the first filling station 100 further includes a first liquid phase pipe and a first gas phase pipe (not shown in the figure), the first liquid phase pipe is arranged parallel to the first liquid collecting tray 12 and flows in the first direction ( Figure 1 The first gas phase pipe extends in the X-axis direction (shown as the X-axis) and is used for loading and unloading liquid LNG. The first gas phase pipe is arranged parallel to the first liquid phase pipe and is used to discharge the gaseous LNG generated during loading and unloading to shore. In this embodiment, the first liquid phase pipe and the first gas phase pipe are installed approximately 6,300 mm from the main deck 10 of the vessel, and the distance between the first liquid phase pipe and the first gas phase pipe and the ship's side is 3,700 mm.

[0058] like Figure 3 and Figure 4 As shown, the second filling station 200 includes a second liquid collection tray 21 and a second water curtain pipe 22 .

[0059] like Figure 4 As shown, the second liquid collecting tray 21 is provided on the main deck 10 of the vessel. The second liquid collecting tray 21 is used to collect the liquefied natural gas leaked during the filling process. In this embodiment, the weight of the second liquid collecting tray 21 is about 15.6 tons, and the strength is between 0.75 tons / m 2 Up to 1.25t / m 2 .

[0060] In this embodiment, the second liquid collecting tray 21 is connected to the main deck 10 of the ship through a plurality of first connecting members and a plurality of second connecting members. Figure 3 As shown, the bottom of the second liquid collecting tray 21 includes two first areas 211 and a second area 212. The first area 211 is used to install a plurality of first connecting members 14 arranged in an array, and the second area 212 is used to install a plurality of second connecting members 23 arranged in an array. Figure 3 In the Y-axis direction shown in FIG, the second region 212 is located between the two first regions 211. In the second direction ( Figure 3 In the Y-axis direction shown in FIG, only one row of the plurality of first connecting members 14 is provided in each first region 211, and the plurality of second connecting members 23 in the second region 212 are arranged in at least one row.

[0061] In another optional embodiment, the second liquid collecting tray 21 can also be connected to the main deck 10 of the ship only through multiple first connecting members 14. That is, the bottom of the second liquid collecting tray 21 only includes two first areas 211 for installing the first connecting members 14. The two first areas 211 are arranged near the bottom edge of the second liquid collecting tray 21 and are located in the second direction ( Figure 3 In the Y-axis direction shown in FIG. 2 , only one row of multiple first connecting members 14 is provided in each first region 211 .

[0062] As an example, the specific structure of the first connecting member 14 is as follows: Figure 2 Since the first area 211 is located at the bottom of the second liquid collecting pan 21 near its edge, and the distance between the first area 211 and the main deck 10 of the ship is relatively large, the first connecting member 14 is arranged in the first area 211 to provide sufficient space for workers to perform operations such as tightening bolts.

[0063] like Figure 5As shown, the second connecting member 23 includes a sleeve 231 and an embedded pipe 232. The sleeve 231 is fixed to the bottom of the second liquid collecting tray 21; the embedded pipe 232 is fixed to the main deck 10 of the ship and embedded in the sleeve 231 to form the second connecting member 23. Unlike the first connecting member 14, the second connecting member 23 does not need to be connected by bolts. Figure 3 As shown, the second region 212 is located in the middle of the bottom of the second liquid collection tray 21, and the distance between the second region 212 and the ship's main deck 10 is relatively small. Therefore, the second connector 23 is arranged in the second region 212, eliminating manual adjustment steps and facilitating operation. In this embodiment, the sleeve 231 and the embedded tube 232 are stainless steel pipes, with the inner diameter of the sleeve 231 being 219 mm and the outer diameter of the embedded tube 232 being 180 mm. Gaskets (not shown), preferably polytetrafluoroethylene gaskets, are provided at the contact points between the sleeve 231 and the second liquid collection tray 21, and between the embedded tube 232 and the ship's main deck 10.

[0064] like Figure 4 As shown, the second water curtain pipe 22 is fixed to the second liquid collecting pan 21 by a second bracket 24. The second bracket 24 is arranged parallel to the hull outer plate 30. The second water curtain pipe 22 is arranged on the side of the second bracket 24 facing the second liquid collecting pan 21. A baffle 25 is also provided below the second water curtain pipe 22. The baffle 25 is installed at the bottom of the second liquid collecting pan 21. The second water curtain pipe 22 is evenly provided with a plurality of water outlet holes (not shown in the figure). The plurality of water outlet holes face the baffle 25 and are arranged along the axial direction of the second water curtain pipe 22 ( Figure 4 As shown in the Y-axis direction, as an example, water flowing out of the water outlets flows through the baffle 25 and downward along the hull plating 30, thereby protecting the hull plating 30 in the entire filling area. In this embodiment, the second water curtain pipe 22 is installed approximately 430 mm from the ship's main deck 10. The second water curtain pipe 22 has an outer diameter of 114 mm, a wall thickness of 4 mm, and is made of 316L stainless steel. The multiple water outlets are spaced 50 mm apart, and the diameter of each water outlet is 10 mm, ensuring uniform water discharge from each outlet.

[0065] As an example, the second filling station 200 further includes a second liquid phase pipe, a third liquid phase pipe and a second gas phase pipe (not shown in the figure), the second liquid phase pipe is arranged parallel to the second liquid collecting tray 21, and is arranged along the first direction ( Figure 3The first and second liquid-phase pipes extend in the X-axis direction (as shown) and are used for loading and unloading liquid LNG. The third liquid-phase pipe is arranged parallel to the second liquid-phase pipe and is also used for loading and unloading liquid LNG. The second gas-phase pipe is arranged parallel to the third liquid-phase pipe and disposed between the second and third liquid-phase pipes to discharge gaseous LNG generated during loading and unloading to shore. In this embodiment, the second, third, and second gas-phase pipes are installed approximately 1870 mm from the ship's main deck 10, and the distance between the second, third, and second gas-phase pipes and the ship's side is 3700 mm.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A liquefied natural gas ship filling station, characterized in that: include: A first filling station includes a storage room, a first liquid collection tray and a first water curtain pipe, wherein the storage room is arranged on the main deck of the ship; The first liquid collecting pan is disposed on the top of the storage chamber, and the first liquid collecting pan is connected to the top of the storage chamber via a plurality of first connecting members; the first water curtain pipe is disposed on the side wall of the storage chamber, and the side wall of the storage chamber is further coated with a protective layer; the first connecting member includes a first supporting leg and a second supporting leg, both of which have flanges welded to their opposing surfaces, and the first supporting leg and the second supporting leg are connected via bolts; a second filling station, comprising a second liquid collecting pan and a second water curtain pipe, wherein the second liquid collecting pan is disposed on the main deck of the vessel and is connected to the main deck of the vessel via a plurality of first connecting members and a plurality of second connecting members; the second water curtain pipe is disposed on a side of the second liquid collecting pan close to the hull outer plating, and the second connecting member comprises a sleeve fixed to the bottom of the second liquid collecting pan; The embedded pipe is fixed on the main deck of the ship and embedded in the sleeve to form a second connecting piece.

2. The liquefied natural gas ship filling station according to claim 1, characterized in that: The first filling station also includes: a first liquid phase pipe, arranged parallel to and above the first liquid collecting tray and extending in a first direction, for filling the ship with liquefied natural gas; The first gas phase pipe is arranged in parallel with the first liquid phase pipe and is used to discharge gaseous natural gas from the ship.

3. The liquefied natural gas ship filling station according to claim 2, characterized in that: The second filling station also includes: a second liquid phase pipe, arranged parallel to and above the second liquid collecting tray, extending along the first direction, and used for filling liquefied natural gas into the ship; a third liquid phase pipe, arranged in parallel with the second liquid phase pipe, for filling the ship with liquefied natural gas; The second gas phase pipe is arranged in parallel with the third liquid phase pipe and between the second liquid phase pipe and the third liquid phase pipe, and is used to discharge gaseous natural gas from the ship.

4. The liquefied natural gas ship filling station according to claim 3, characterized in that: The bottom of the second liquid collecting tray includes two first areas and one second area, the first areas are used to install a plurality of the first connecting members arranged in an array, and the second areas are used to install a plurality of the second connecting members arranged in an array; In a second direction perpendicular to the first direction, the second region is located between two first regions.

5. The liquefied natural gas ship filling station according to claim 1, characterized in that: The first water curtain pipe is fixed to the side wall of the storage chamber through a first bracket. The first bracket is arranged parallel to the first liquid collecting tray. The first water curtain pipe is arranged on the lower surface of the first bracket.

6. The liquefied natural gas ship filling station according to claim 5, characterized in that: A plurality of water outlet holes are evenly arranged on the first water curtain pipe. The plurality of water outlet holes face the side wall of the storage chamber and are arranged along the axial direction of the first water curtain pipe.

7. The liquefied natural gas ship filling station according to claim 1, characterized in that: The second water curtain pipe is fixed to the second liquid collecting tray via a second bracket. The second bracket is arranged parallel to the hull outer plate. The second water curtain pipe is arranged on a side of the second bracket facing the second liquid collecting tray.

8. The liquefied natural gas ship filling station according to claim 7, characterized in that: A baffle is further provided below the second water curtain tube, and the baffle is installed at the bottom of the second liquid collecting tray.

9. The liquefied natural gas ship filling station according to claim 8, characterized in that: The second water curtain tube is evenly provided with a plurality of water outlet holes, the plurality of water outlet holes are directed toward the baffle and are arranged along the axial direction of the second water curtain tube.

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