1. An LNG-powered vessel comprising a hull and a fuel supply removably connected to said hull;

a conveying pipeline is arranged on the ship body;

the fuel supply device includes:

a frame having an accommodating space therein; the frame is detachably connected with the ship body;

the tank body is arranged in the accommodating space; the tank body is used for loading LNG;

the at least one cold box is arranged in the accommodating space and is sequentially arranged with the tank body along the length direction of the frame;

the air supply mechanisms are arranged in one-to-one correspondence with the cold boxes; air feed mechanism includes the buffer tank, and set up in gasification pressure boost unit, pressure regulating unit in the cold box, fill dress pipeline, connecting line and air supply line, fill the dress pipeline with connecting line all with jar body intercommunication, gasification pressure boost unit with connecting line connects with right the LNG that the jar body carried gasifies, the pressure regulating unit set up in the low reaches of gasification pressure boost unit to adjust NG's pressure, the buffer tank set up in the accommodation space, just the buffer tank set up in the low reaches of gasification pressure boost unit are in order to store NG, the air supply line set up in the low reaches of buffer tank, in order to outwards carry NG, just the air supply line with the connection can be dismantled to the conveying line.

2. The LNG-powered vessel of claim 1, characterized in that the number of cold boxes is plural; the two ends of the tank body are provided with the cold box.

3. The LNG-powered ship of claim 2, wherein the frame comprises two end frames spaced in parallel and two middle frames spaced in parallel, the two middle frames being spaced between the two end frames, the two ends of the tank body being connected to the two middle frames, respectively, and the end frames and the area between the middle frames adjacent to the end frames being adapted to receive the cold box.

4. The LNG-powered vessel of claim 1, characterized in that the number of cold boxes is plural; it is a plurality of the cold box all is located the same one end of jar body, and is a plurality of the cold box is range upon range of the setting.

5. The LNG powered vessel of claim 4, wherein the frame comprises two end frames disposed in parallel and spaced apart, and a middle frame disposed between the two end frames, wherein two ends of the tank body are connected to the middle frame and one of the end frames, respectively, and an area between the other end frame and the middle frame is used for accommodating the cold box.

6. LNG-powered vessel according to claim 1, characterized in that the buffer tank is arranged in the cold box with its axial direction extending vertically.

7. The LNG-powered ship according to claim 1, characterized in that the surge tank is fixed to an outer periphery of the tank body, and an axial direction of the surge tank is parallel to an axial direction of the tank body.

8. The LNG-powered vessel of claim 7, wherein the tank is circular in cross-section, the frame is square in cross-section, and the outer circumference of the tank is tangential to the frame, and the surge tank is located at a gap between the outer circumference of the tank and the frame.

9. LNG-powered vessel according to claim 7, characterized in that the ends of the buffer tank extend into the cold box;

the inlet end of the air supply pipeline is connected with the buffer tank, and the outlet end of the air supply pipeline is close to the end part of the frame.

10. LNG-powered vessel according to claim 1, characterized in that the axial direction of the pressure regulating unit extends in the width direction of the frame.

11. The LNG-powered vessel of claim 1, wherein the cold box comprises a box body and an airtight door mounted on the box body to be openable and closable with respect to the box body, the box body being an airtight box body.

Background

Liquefied Natural Gas (LNG) has become the first choice of green energy for future ships as an economical, green and safe novel energy source.

The LNG powered ship is a ship using LNG as an energy source, and in the LNG powered ship, LNG is generally stored in a fuel tank, and when the LNG in the fuel tank is used up, the LNG powered ship needs to be specially filled in a gas station, which results in a delay to some extent. Moreover, the number of LNG water filling pontoon used for building at present is limited and uneven, the fuel filling of the LNG power ship on the ocean mainly adopts a shore-based tank car wharf filling mode, the filling time is long, and the potential safety hazard is high, so that the large-scale application of the LNG power ship is severely restricted.

Disclosure of Invention

The invention aims to provide an LNG power ship with short filling time, and the LNG power ship is used for solving the problems in the prior art.

In order to solve the technical problem, the invention provides an LNG powered ship, which comprises a ship body and a fuel supply device detachably connected with the ship body;

a conveying pipeline is arranged on the ship body;

the fuel supply device includes:

a frame having an accommodating space therein; the frame is detachably connected with the ship body;

the tank body is arranged in the accommodating space; the tank body is used for loading LNG;

the at least one cold box is arranged in the accommodating space and is sequentially arranged with the tank body along the length direction of the frame;

the air supply mechanisms are arranged in one-to-one correspondence with the cold boxes; air feed mechanism includes the buffer tank, and set up in gasification pressure boost unit, pressure regulating unit in the cold box, fill dress pipeline, connecting line and air supply line, fill the dress pipeline with connecting line all with jar body intercommunication, gasification pressure boost unit with connecting line connects with right the LNG that the jar body carried gasifies, the pressure regulating unit set up in the low reaches of gasification pressure boost unit to adjust NG's pressure, the buffer tank set up in the accommodation space, just the buffer tank set up in the low reaches of gasification pressure boost unit are in order to store NG, the air supply line set up in the low reaches of buffer tank, in order to outwards carry NG, just the air supply line with the connection can be dismantled to the conveying line.

In one embodiment, the number of the cold boxes is multiple; the two ends of the tank body are provided with the cold box.

In one embodiment, the frame includes two end frames disposed in parallel at an interval and two middle frames disposed in parallel at an interval, the two middle frames are disposed between the two end frames at an interval, two ends of the tank body are respectively connected to the two middle frames, and the end frames and an area between the middle frames near the end frames are used for accommodating the cold box.

In one embodiment, the number of the cold boxes is multiple; it is a plurality of the cold box all is located the same one end of jar body, and is a plurality of the cold box is range upon range of the setting.

In one embodiment, the frame includes two end frames disposed in parallel at intervals and a middle frame disposed between the two end frames, two ends of the tank body are respectively connected to the middle frame and one of the end frames, and an area between the other end frame and the middle frame is used for accommodating the cold box.

In one embodiment, the buffer tank is disposed in the cold box, and an axial direction of the buffer tank extends vertically.

In one embodiment, the buffer tank is fixed on the outer periphery of the tank body, and the axial direction of the buffer tank is parallel to the axial direction of the tank body.

In one embodiment, the cross section of the tank body is circular, the cross section of the frame is square, the periphery of the tank body is tangent to the frame, and the buffer tank is located at a gap between the periphery of the tank body and the frame.

In one embodiment, the end of the buffer tank extends into the cold box;

the inlet end of the air supply pipeline is connected with the buffer tank, and the outlet end of the air supply pipeline is close to the end part of the frame.

In one embodiment, an axial direction of the pressure regulating unit extends in a width direction of the frame.

In one embodiment, the cold box comprises a box body and an airtight door which is installed on the box body and can be opened and closed relative to the box body, and the box body is an airtight box body.

According to the technical scheme, the invention has the advantages and positive effects that:

the LNG powered ship comprises a ship body and the fuel supply device detachably connected with the ship body, so that the fuel supply device loaded with LNG can be replaced by the fuel supply device on the current ship body, namely, the time for waiting for filling the fuel supply device can be saved by replacing the fuel supply device, and the efficiency is improved.

And the fuel supply device comprises a frame, a tank body, at least one cold box and an air supply mechanism which is arranged corresponding to the cold box. The gas supply mechanism comprises a buffer tank, and a pressure regulating unit, a filling pipeline, a connecting pipeline and a gas supply pipeline which are arranged in the cold box, so that the functions of gas supply, filling, disassembly, lifting and the like are integrated into a whole by the fuel supply device, the fuel supply device can be installed on a ship body to provide fuel required by the ship body, and can also be used as a tank box for LNG (liquefied natural gas) water and land combined transportation, the influence of sites and the environment is avoided, and the universality is higher.

Drawings

Fig. 1 is a front view of a fuel supply apparatus in a first embodiment of an LNG-powered ship according to the present invention.

Fig. 2 is a side view of a fuel supply apparatus in a first embodiment of the LNG-powered ship of the present invention.

Fig. 3 is a front view of a fuel supply apparatus in a second embodiment of the LNG-powered ship of the present invention.

Fig. 4 is a side view of a fuel supply apparatus in a second embodiment of the LNG-powered ship of the present invention.

Fig. 5 is a side view of a fuel supply arrangement in a second embodiment of the LNG-powered vessel of the invention, wherein the arrangement inside the cold box is visible.

The reference numerals are explained below: 2. a fuel supply device; 211. an end frame; 212. a middle frame; 22. a tank body; 23. a cold box; 241. a gasification pressurization unit; 242. a buffer tank; 243. a gas supply line; 244. filling a pipeline;

3. a fuel supply device; 311. an end frame; 312. a middle frame; 32. a tank body; 33. a cold box; 341. a gasification pressurization unit; 342. a buffer tank; 343. a gas supply line; 344. and (6) filling a pipeline.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

The invention provides an LNG power ship. The LNG-powered ship may be a ship using only LNG as fuel, or a ship using LNG as a main fuel and diesel oil as an auxiliary fuel.

The LNG powered vessel comprises a hull and a fuel supply device detachably connected with the hull, so that refueling time can be saved by replacing the fuel supply device, namely, the fuel supply device loaded with LNG can be replaced by the fuel supply device on the current hull, and refueling time of the fuel supply device is saved.

The following description is given by way of specific examples.

First embodiment of LNG-powered vessel

The top of the hull has an open deck. The deck is spaced from the bottom of the hull to form an interior space, and the interior space is divided as required to form a cargo hold, a cabin, a ballast tank, and the like. Wherein, a propelling engine burning NG is arranged in the engine room to provide power to realize the navigation of the whole ship.

The ship body is provided with a conveying pipeline, one end of the conveying pipeline extends into the cabin to be connected with the propulsion engine, and the other end of the conveying pipeline extends upwards to penetrate out of the deck to be connected with the fuel supply device.

Referring to fig. 1 and 2, the fuel supply apparatus 2 includes a frame 21, a tank 22, two cold boxes 23, and two air supply mechanisms.

The frame 21 has an accommodating space inside thereof, and the frame 21 is detachably connected to the hull. Specifically, the frame 21 has a square cross section, and specifically includes two end frames 211 disposed in parallel at an interval, a middle frame 212 located between the two short frames, and a side beam connecting the two end frames 211.

The end frame 211 is square and comprises two parallel corner posts arranged at intervals, an upper end beam and a lower end beam which are connected with the corner posts, and corner pieces. The corner posts, the end upper beam and the end lower beam are connected by corner pieces to form a square structure, i.e., an end frame 211.

The corner fitting is of a rectangular square structure with a hollow interior, and a through hole is formed in the corner fitting. In this embodiment, the through hole is substantially elliptical.

In this embodiment, corner pieces are disposed at four bottom corners of the frame 21. The corner pieces at the top of the frame 21 can be used for lifting and thus facilitate the replacement of the whole fuel supply apparatus 2.

The side beams include a top side beam and a bottom side beam. The top side beams connect the tops of the two end frames 211, and the bottom side beams connect the bottoms of the beam end frames 211.

The middle frame 212 includes two columns disposed in parallel and spaced apart, and a top connection beam and a bottom connection beam. The upright posts are erected between the top side beams and the bottom side beams, the top connecting beams are connected with the two top side beams, and the bottom connecting beams are connected with the two bottom side beams. The two upright posts, the top connecting beam and the bottom connecting beam are enclosed to form a square.

In the present application, the center frame 212 does not refer to the center of the center frame 212 in the longitudinal direction of the side member, but refers to the center frame 212 connected to a region of a certain length range including the center of the side member in the longitudinal direction, and does not include the end portions at both ends in the longitudinal direction of the side member.

In this embodiment, the middle frame 212 divides the accommodating space of the frame 21 into two parts along the length direction of the frame 21, which are respectively the accommodating space of the tank 22 and the accommodating space of the cold box 23.

The tank 22 is used for loading LNG. The tank 22 is disposed in the tank 22 accommodating space of the frame 21. Specifically, the tank 22 includes a cylinder and end sockets disposed at opposite ends of the cylinder, wherein one end socket is connected to the end frame 211 of the frame 21, and the other end socket is connected to the middle frame 212 of the frame 21.

Specifically, the can 22 is circular in cross-section. When the tank 22 is positioned in the frame 21, the periphery of the tank 22 is tangent to the frame 21, and gaps are formed between the four corners of the frame 21 and the tank 22. I.e. close to the side beams, there is a gap between the frame 21 and the tank 22.

The tank 22 is designed and manufactured to meet the requirements of the two specifications of IMDG and IGF, and has the dual functions of land and water transport and marine fuel tanks.

Both cold boxes 23 are located in the cold box 23 receiving space of the frame 21. The two cold boxes 23 are stacked one above the other, i.e. the cold boxes 23 in this embodiment are located at the same end of the tank 22.

Specifically, the cold box 23 includes a box body and an airtight door provided on the box body to be openable and closable with respect to the box body. The box body adopts an airtight box body, namely, the connection of all parts of the box body is sealed connection, thereby preventing the low-temperature liquid leaked in the box body from leaking outwards and ensuring the use safety of the fuel supply device 2.

The cold box 23 is able to withstand a low temperature of-196 c so as to protect the hull in the event of a leak, avoiding damage thereto.

Two air supply mechanisms are arranged one by one with the two cold boxes 23. Each gas supply mechanism includes a gasification pressurization unit 241, a buffer tank 242, a pressure regulating unit, a charging line 244, a connecting line, and a gas supply line 243.

The connecting pipeline, the gasification pressurization unit 241, the pressure regulating unit, the air supply pipeline 243 and the charging pipeline 244 are all arranged in the cold box 23. Wherein the connecting line is in communication with the tank 22 and is further capable of receiving LNG from the tank 22.

The gasification pressurizing unit 241 is disposed at the other end of the connection line with respect to the tank 22 to receive LNG.

The gasification pressurizing unit 241 has two functions of gasification and pressurization, and the two functions of gasification and pressurization are independent. Here, the vaporization means vaporizing the LNG in the tank 22. The pressurization refers to pressurizing the inside of the tank 22 so that the LNG in the tank 22 is discharged. Specifically, the axis of the gasification pressurizing unit 241 extends in the width direction of the frame 21. With this layout, the length of the frame 21 can be reduced as much as possible.

The buffer tank 242 is disposed downstream of the gasification boost unit 241 to receive and store the gaseous fuel, i.e., NG. The setting of buffer tank 242 can guarantee that the hull has sufficient energy power when beginning to start under the prerequisite of not opening the pressure regulating unit, can provide the energy of life for the crew simultaneously.

The pressure adjusting unit is disposed downstream of the buffer tank 242, that is, downstream of the gasification pressurizing unit 241. The pressure regulating unit regulates the NG output from the buffer tank 242 as necessary. Specifically, the pressure regulating unit includes a plurality of valves.

In other embodiments, the buffer tank 242 may also be disposed downstream of the pressure regulating unit.

In the present embodiment, the surge tank 242 is disposed on the outer periphery of the tank 22. And the buffer tank 242 is disposed at a gap between the tank 22 and the frame 21. Specifically, the number of surge tanks 242 of each air supply mechanism is two, that is, the number of surge tanks 242 of the entire fuel supply apparatus 2 is four.

The four surge tanks 242 are provided corresponding to the four side members of the frame 21, respectively. The buffer tank 242 is fixedly connected to the frame 21. The two buffer tanks 242 located at the top correspond to the cold box 23 located at the upper layer, and the two buffer tanks 242 located at the bottom correspond to the cold box 23 located at the lower layer.

The buffer tank 242 is disposed at the gap between the frame 21 and the tank 22, i.e. the accommodating space of the frame 21 is fully utilized, and the pipelines and other equipment in the cold box 23 have a large space for arrangement.

The end of the buffer tank 242 close to the cold box 23 extends into the cold box 23 to connect with the gasification pressurizing unit 241, the pressure regulating unit and the air supply pipeline 243.

The air supply pipe 243 is located in the cold box 23, and one end of the air supply pipe 243 is connected to the buffer tank 242, and the other end is used for being connected to a delivery pipe, so as to provide fuel for the propulsion engine. The air supply pipe 243 is detachably connected to the delivery pipe, so that the pipe between the fuel supply apparatus 2 and the hull can be detached.

Specifically, the outlet end of the air supply pipeline 243 is disposed at the other side of the gasification and pressurization unit 241 away from the tank 22, that is, the outlet end of the air supply pipeline 243 is close to the end frame 211 of the accommodating space of the cold box 23, so as to facilitate the connection between the air supply pipeline 243 and the conveying pipeline.

A filling line 244 is located in the cold box 23 and the filling line 244 communicates with the tank 22 to fill the tank 22. In particular, the filling opening of the filling line 244 is arranged at the other side of the gasification pressurizing unit 241 from the tank 22, i.e. the filling opening of the filling line 244 is close to the end frame 211 of the receiving space of the cold box 23, in order to facilitate the connection of the filling line 244 with the outside.

The fuel supply device 2 in the embodiment integrates functions of gas supply, filling, disassembly, lifting and the like into a whole through the structure, so that the fuel supply device 2 can be installed on a ship body to provide fuel required by the ship body and can also be used as a tank for LNG (liquefied natural gas) water-land combined transportation, the influence of fields and environments is avoided, and the universality is high.

When the LNG in the tank 22 needs to be filled, the LNG-powered vessel drives to the gas station, disconnects the hull from the frame 21, removes the current fuel supply 2 from the hull, replaces a LNG-filled fuel supply 2 on the hull, and connects the fuel supply 2 to the hull. At this point, the LNG-powered vessel may continue to sail.

In addition, when the fuel supply device 2 on the hull is out of order and needs to be repaired or maintained, the fuel supply device 2 can be removed from the hull and a fuel supply device 2 can be hoisted to the hull again, and the LNG-powered ship can continue to sail. The fuel supply apparatus 2 requiring maintenance or service is then repaired or serviced on shore.

Second embodiment of LNG-powered vessel

Referring to fig. 3, 4 and 5, the present embodiment differs from the first embodiment of the LNG-powered vessel in that:

in this embodiment, the fuel supply apparatus 3 has one cooling tank 33 and one air supply mechanism.

Specifically, the cold box 33 is located at one end of the tank 32, i.e., the cold box 33 is located between the end frame 311 and the middle frame 312.

The buffer tank 342 of the air supply mechanism is erected in the cold box 33. The buffer tank 342 and the vaporization pressurizing unit 341 are sequentially provided in the width direction of the frame.

The gas supply line 343 and the charging line 344 are located on the side of the gasification pressurizing unit 341 away from the tank 32, that is, the gas supply line 343 and the charging line 344 are close to the end frame 311.

Other features of the LNG-powered vessel in this embodiment may be referred to the first embodiment and will not be described in detail.

Third embodiment of LNG-powered vessel

The present embodiment differs from the first embodiment of the LNG-powered vessel in that:

the number of the cold boxes in the embodiment is two, and the two cold boxes are respectively arranged at two ends of the tank body.

Specifically, the frame comprises two end frames and a middle frame positioned between the two end frames. Namely, along the length direction of the frame, the end frame, the middle frame and the end frame are arranged in sequence.

The area enclosed by the two middle frames is the tank body accommodating area, and the area enclosed by the end frame and the middle frame close to the end frame is the cold box accommodating area. I.e., the frame in this embodiment includes a tank receiving area and two cold box receiving areas.

The jar body sets up in jar body accommodation area, and the both ends of jar body are connected with two center respectively promptly. The cold box is arranged in the cold box accommodating area, namely the cold box is respectively connected with the end frame and the middle frame.

The buffer tanks are grouped in pairs and belong to two gas supply mechanisms respectively.

Other features of the LNG-powered vessel in this embodiment may be referred to the first embodiment and will not be described in detail.

According to the technical scheme, the invention has the advantages and positive effects that:

the LNG powered ship comprises a ship body and the fuel supply device detachably connected with the ship body, so that the fuel supply device loaded with LNG can be replaced by the fuel supply device on the current ship body, namely, the time for waiting for filling the fuel supply device can be saved by replacing the fuel supply device, and the efficiency is improved.

And the fuel supply device comprises a frame, a tank body, at least one cold box and an air supply mechanism which is arranged corresponding to the cold box. The gas supply mechanism comprises a buffer tank, and a pressure regulating unit, a filling pipeline, a connecting pipeline and a gas supply pipeline which are arranged in the cold box, so that the gas supply device integrates the functions of gas supply, filling, disassembly, lifting and the like into a whole, the fuel supply device can be installed on a ship body to provide fuel required by the ship body, and can also be used as a tank box for LNG (liquefied natural gas) water and land combined transportation, the influence of sites and the environment is avoided, and the universality is higher.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.