CN109606572B

CN109606572B - B-type fuel cabin structure arrangement applied to container ship

Info

Publication number: CN109606572B
Application number: CN201811291581.3A
Authority: CN
Inventors: 王小宁; 姜甲志
Original assignee: Hudong Zhonghua Shipbuilding Group Co Ltd
Current assignee: Hudong Zhonghua Shipbuilding Group Co Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2021-01-19
Anticipated expiration: 2038-10-31
Also published as: CN109606572A

Abstract

The invention relates to a structural arrangement of a B-type fuel cabin applied to a container ship, which mainly comprises an enclosure system, a main body structure and a support system, wherein the enclosure system comprises an insulating plate, a gas dome and a liquid accumulation device; the support system comprises a fixed support, an anti-rolling socket and a floating stopping device; the main structure consists of bulkhead plates, longitudinal ribs, longitudinal girders, rib plates and a swinging bulkhead. The B-type fuel cabin applied to the container ship and the structural arrangement are formed based on the special structural arrangement of the container ship, and can effectively prevent the B-type fuel cabin from being damaged by impact after the main ship body collides, isolate heat transfer and improve safety.

Description

B-type fuel cabin structure arrangement applied to container ship

Technical Field

The invention belongs to the technical field of ship manufacturing, and particularly relates to a structural arrangement of a B-type fuel tank applied to a container ship.

Background

LNG bunkers typically employ either membrane type cargo tanks or stand-alone type cargo tanks. The membrane type cargo tank has a long construction period, so that the independent type cargo tank has certain advantages as a fuel tank. The independent LNG cargo tank is divided into a B-type independent tank and a C-type independent tank, wherein the B-type independent tank has the characteristics of large tank capacity, flexible arrangement and the like, so that the application of the B-type LNG fuel tank has a wide market prospect.

The B-type LNG fuel tank is used for loading LNG fuel and is characterized in that a B-type independent self-supporting full-cooling low-temperature liquid cargo tank can provide LNG as power fuel for a container ship, and the B-type fuel tank is required to be arranged in appropriate areas such as the front part of a cabin of the container ship according to the structural arrangement characteristics of the container ship. But the structure of the B-type fuel tanks and the arrangement thereof must be designed according to the hull conditions.

Disclosure of Invention

The invention relates to a structural arrangement of a B-type fuel cabin applied to a container ship, in particular to the characteristic of a 'step-shaped' structure of the container ship. The B-type fuel tank of the invention is formed based on the special structural arrangement of the container ship and can be applied to the B-type fuel tank of the container ship. The B-type fuel tank can be effectively prevented from being damaged by impact after the main ship body is collided, heat transfer is isolated, and safety is improved.

In order to achieve the above purpose, the technical scheme provided by the invention is as follows:

a structural arrangement of a B-type fuel cabin applied to a container ship is characterized by comprising a main body structure, a containment system and a support system, wherein the main body structure comprises the B-type fuel cabin with a hexagonal cross section and an air dome extending from the upper end of the B-type fuel cabin, the B-type fuel cabin is inverted in a 'Lu' shape along the width direction of the ship to adapt to a 'step-shaped' placing space on the container ship, an independent empty cabin is arranged between the main body structure and a main ship body, the containment system and the support system are arranged in the empty cabin, the containment system comprises an insulating plate, a leakage channel and a liquid loading device, insulating plates are laid on the top, the bottom and four side walls of the B-type fuel cabin, gaps are reserved between the insulating plates and the B-type fuel cabin to serve as the leakage channel, the leakage channel is connected with an exhaust pipe, and a gas detector is arranged on the exhaust pipe, a left liquid accumulating device and a right liquid accumulating device are arranged below the B-type fuel tank and above an inner bottom plate of the main ship body, and each liquid accumulating device comprises a guide pipe, an ejector, a liquid accumulating tank and a temperature sensor; the support system comprises a fixed support for preventing the B-type fuel tank from rolling, an anti-rolling socket for preventing the B-type fuel tank from pitching and a floating stopping device for preventing the B-type fuel tank from floating.

In the structural arrangement of the B-type fuel tank applied to the container ship, the top of a liquid accumulating tank on the liquid accumulating device is fixedly connected with a guide pipe, the guide pipe is communicated with the bottom of a leakage channel, the lower end of the liquid accumulating tank is fixedly provided with an ejector, the ejector is fixedly connected with a liquid discharging pipe, and the liquid discharging pipe extends to the outside of the main ship body and is communicated with a liquid main pipe.

In the structural arrangement of the B-type fuel tank applied to the container ship, the main structure is composed of an outer plate, longitudinal ribs, longitudinal girders, rib plates and oscillating bulkheads, and the main structure is arranged in a grid structure and is a cross beam system structure.

In the structural arrangement of the type B fuel tank applied to the container ship of the present invention, the outer surface of the insulating plate has a protective layer.

In the structural arrangement of the type-B bunker applied to the container ship of the present invention, a plurality of combustible gas detectors for detecting leaked combustible gas are provided in the empty bunker between the main hull and the type-B bunker.

Based on the technical scheme, the invention obtains the following technical effects through practical application:

according to the invention, an independent empty cabin is arranged between the B-type fuel cabin and the main ship body so as to arrange a support system and lay an insulation plate and other containment systems, and the B-type fuel cabin can be effectively prevented from being impacted and damaged after the main ship body collides so as to leave a certain buffer space. The support system comprises a fixed support for preventing the B-type fuel tank from rolling, an anti-rolling socket for preventing the B-type fuel tank from pitching, and a floating stopping device for preventing the B-type fuel tank from floating. All the support systems are composed of laminated wood and support structures, through reasonable design, longitudinal and vertical loads of the B-type fuel cabin can be effectively transmitted to the main ship body, the loads are transmitted through the laminated wood, heat transmission is avoided, and effective heat insulation of the low-temperature B-type fuel cabin is guaranteed.

Drawings

Figure 1 is a schematic view of the position of a type B fuel tank of the present invention in a container ship.

Fig. 2 is a schematic view of the structural arrangement of the type B fuel tanks on the container ship of the present invention.

Fig. 3 is a schematic diagram of longitudinal ribs and longitudinal girders of a main structure in the structural arrangement of the type B fuel tank applied to the container ship.

Fig. 4 is a schematic view of the rib plate of the transverse frame of the main structure in the structural arrangement of the B-type fuel tank applied to the container ship.

Fig. 5 is a schematic structural view of the wash bulkheads in the structural arrangement of the type B fuel tank applied to the container ship according to the present invention.

Fig. 6 is a schematic structural view of a rear bulkhead in a structural arrangement of a type B fuel tank applied to a container ship according to the present invention.

In the figure: 1. a type B bunker; 2. a body structure; 3. a support pad; 4. an insulating plate; 5. a protective layer; 6. emptying the cabin; 7. a main hull; 8. an anti-roll socket; 9. a fixed support; 10. a float-stopping device; 11. a conduit; 12. a liquid accumulation tank; 13. an ejector; 14. a temperature sensor; 15. a liquid discharge pipe; 16. a leakage path; 17. a gas dome; 18. a leakage gas detector; 19. an exhaust pipe; 20. an outer plate; 21. a longitudinal bone; 22. a stringer; 23. a rib plate; 24. fabricating a bulkhead; 25. a combustible gas detector; 26. a manhole; 27. vertical aggregate; 28. a vertical truss; 29. and a horizontal girder.

Detailed Description

In order that the technical contents of the present invention can be more clearly understood, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

On a container ship, the B-type fuel cabin 1 is in an inverted L shape so as to adapt to the step-shaped structural characteristics of the container ship. The B-type fuel tank 1 mainly comprises a containment system, a main body structure 2 and a support system.

An independent empty cabin 6 is arranged between the B-type fuel cabin 1 and the main ship body 7 so as to be convenient for arranging a support system, laying an insulating plate 4 and other containment systems, and a certain buffer space is reserved, so that the B-type fuel cabin 1 can be effectively prevented from being impacted after the main ship body 7 collides, and the safety of the B-type fuel cabin 1 is ensured. Preferably, the clearance between the B-tank 1 and the main hull 7 is 1010 mm.

The containment system comprises an insulating plate 4, a leakage channel 16 and a liquid accumulation device. The heat insulation material in the insulation board 4 is low temperature resistant polyurethane foam, the heat insulation material is mainly arranged on the outer side of the main structure 2 of the B-type fuel cabin 1, and the insulation board 4 meets the heat insulation performance and can bear the strength and rigidity of construction load. A gap is reserved between the insulating plate 4 and the B-type fuel cabin 1 to serve as a leakage channel 16, the leakage channel 16 is connected with an exhaust pipe 19, a gas detector 18 is arranged on the exhaust pipe (19), and in order to increase the safety performance of the containment system, the leakage gas detector 18 is fixed on the exhaust pipe 1 to detect leaked gas in real time. The liquid accumulation device comprises a guide pipe 11, an ejector 13, a liquid accumulation groove 12 and a temperature sensor 14, the top of the liquid accumulation groove 12 is fixedly connected with the guide pipe 11, the guide pipe 11 is communicated with the bottom of a leakage channel 16, the ejector 13 is fixed at the lower end of the liquid accumulation groove 12, the ejector 13 is fixedly connected with a liquid discharge pipe 15, and the liquid discharge pipe 15 extends to the outside of the main ship body 7 and is communicated with a liquid main pipe. The temperature sensor 14 is fixed on the box body of the liquid accumulation tank 12.

The B-type fuel tank 1 comprises an insulating plate 4, a leakage channel 16 and a main structure 2 which are arranged from outside to inside in sequence, and the shapes of the leakage channel 16 and the insulating plate 4 are the same as that of the B-type fuel tank 1. The top of the leakage channel 16 is provided with an exhaust pipe 19 communicated with a gas main pipe outside the main hull 7, and the bottom is provided with a liquid loading device communicated with a liquid main pipe outside the main hull 7. The hydrops device mainly used prevents that LNG from revealing, and hydrops groove 12 is linked together with pipe 11, and when taking place a large amount of LNG and revealing, the LNG of revealing passes through inside leakage channel 16 and the pipe 11 in B type bunker 1, flows into hydrops groove 12, and rethread sprayer 13 and fluid-discharge tube 15 carry to the outer liquid main pipe of main hull 7, the LNG of avoiding revealing and main hull 7 direct contact to guarantee hull structure's safety, improved the reliability of the whole hydrops whole B type bunker containment system.

The cross section of the B-shaped fuel tank 1 is inverted L-shaped, the upper end of the B-shaped fuel tank 1 extends outwards to form an air dome 17, and the shape of the leakage channel 16 is the same as that of the B-shaped fuel tank 1, so that the top of the leakage channel 16 also has a space similar to the air dome, and when a small amount of LNG is leaked, the leaked LNG can be evaporated and condensed into the air dome at the top of the leakage channel 16 and is discharged into the air main pipe of the main hull 7 from the exhaust pipe 19, and the safety of the hull is ensured.

The support system is mainly used for supporting the B-type fuel tank 1, can effectively reduce the relative movement between the independent self-supporting B-type fuel tank 1 and the main ship body 7 in the operation process, and improves the anti-sloshing characteristic of the B-type fuel tank 1. The support system comprises a fixed support 9 for preventing rolling and an anti-rolling socket 8 for preventing pitching, and a floating stop device 10 for preventing the liquid tank from floating, and all the support systems are composed of laminated wood and a support structure. The bottom of the B-type fuel tank 1 is uniformly provided with a left fixed support 9 and a right fixed support 9 which are equal in number, the center lower part of the B-type fuel tank 1 is provided with an anti-rolling socket 8 for preventing pitching, and the top of the B-type fuel tank 1 is provided with a left floating stopping device 10 and a right floating stopping device 10.

Thus, the whole support system is fixed on the structure of the main hull 7 by welding, and the B-type fuel tank 1 is stably supported by arranging corresponding structural reinforcement below the structure of the main hull 7. The support system can effectively transmit the longitudinal and vertical loads of the B-type fuel tank 1 to the structure of the main ship body 7, the loads are transmitted through laminated battens, the heat transmission can be reduced, and the B-type fuel tank 1 is ensured to have excellent heat insulation performance.

The main structure 2 of the B-type fuel tank 1 is made of a steel plate and a profile having a predetermined thickness, and is preferably made of a low-temperature resistant material such as nickel steel or manganese steel. The outer panel 20 of the B-type fuel tank 1 is surrounded by a bottom panel, a top panel, a front panel, a rear panel, a dash panel, and a side panel. The intersection positions of the plates are provided with circular arc transition. Preferably, the radius of the circular arc is generally not less than 400 mm. The outer plate 20 and the wash bulkheads 24 of the B-type fuel tank 1 are reinforced by longitudinal ribs 21 and longitudinal girders 22. Preferably, the pitch of the longitudinals 21 is in principle identical to the pitch of the longitudinals of the container ship's main hull 7. The longitudinal frame 21 is a T-shaped combined section bar and is arranged in the cabin of the B-shaped fuel cabin 1. Every three or four longitudinal ribs 21 are provided with a longitudinal girder 22, and the longitudinal girder 22 is provided with a reinforcing rib for reinforcement. One rib plate 23 is arranged at a certain distance (three or four rib distances) along the length direction of the ship to serve as a main supporting member (strong frame), and reinforcing ribs are arranged on the rib plate 23 to reinforce.

Vertical aggregate 27 is provided as a reinforcing rib on the front bulkhead and the rear bulkhead of the B-type fuel tank 1, and a vertical girder 28 and a horizontal girder 29 corresponding to the vertical girder 22 are provided on the top plate and the bottom plate of the outer panel 21, so that the front bulkhead and the rear bulkhead form a cross beam system structure.

A longitudinal wash bulkhead 24 in the length direction of the vessel is provided at the center of the B-type tank 1. Preferably, the manholes 26 are formed in the oscillation bulkhead 24 at intervals in the front-back and up-down directions, so that the impact force of the tank sloshing on the main structure 2 can be effectively reduced, and the safety of the main structure 2 is ensured. The fabricating bulkhead 24 is provided with longitudinal ribs 21 and longitudinal girders 22, and preferably, the longitudinal girders 22 of the fabricating bulkhead 24 are connected with the longitudinal girders 22 at the front bulkhead and the rear bulkhead, so that the strong frames form a cross beam system.

In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification is, therefore, to be regarded in an illustrative rather than a restrictive sense, and all such modifications and changes are intended to be included within the scope of the appended claims.

Claims

1. A structural arrangement of a B-type fuel cabin applied to a container ship is characterized by comprising a main body structure (2), a containment system and a support system, wherein the main body structure (2) comprises the B-type fuel cabin (1) with a hexagonal cross section and an air dome (17) extending out of the upper end of the B-type fuel cabin (1), the B-type fuel cabin (1) is inverted-Lu-shaped along the width direction of the ship to adapt to a step-shaped placing space on the container ship, an independent empty cabin (6) is arranged between the main body structure (2) and a main ship body (7), the containment system and the support system are arranged in the empty cabin (6), the containment system comprises an insulating plate (4), a leakage channel (16) and a liquid accumulation device, the insulating plate (4) is paved on the top, the bottom and four side walls of the B-type fuel cabin (1), a gap is reserved between the insulating plate (4) and the B-type fuel cabin (1) to serve as a leakage channel (16), the leakage channel (16) is connected with an exhaust pipe (19), a gas detector (18) is arranged on the exhaust pipe (19), a left liquid accumulating device and a right liquid accumulating device are arranged below the B-type fuel cabin and above an inner bottom plate of the main ship body, and each liquid accumulating device comprises a guide pipe (11), an ejector (13), a liquid accumulating groove (12) and a temperature sensor (14); the support system comprises a fixed support (8) for preventing the B-type fuel tank (1) from rolling, an anti-rolling socket (9) for preventing the B-type fuel tank (1) from pitching and a floating stopping device (10) for preventing the B-type fuel tank (1) from floating.

2. A structural arrangement of a type B bunker for container ships as claimed in claim 1, characterised in that the top of the liquid accumulation tank (12) on said liquid accumulation device is fixedly connected to the conduit (11), the conduit (11) is connected to the bottom of the leakage channel (16), the lower end of the liquid accumulation tank (12) is fixed with the ejector (13), the ejector (13) is fixedly connected to the liquid discharge pipe (15), and the liquid discharge pipe (15) extends to the outside of the main hull (7) and is connected to the liquid main.

3. The structural arrangement of a type B bunker for container ships, as set forth in claim 1, characterized in that said main structure (2) is formed by external plates (20), stringers (21), stringers (22), ribs (23) and wash bulkheads (24), and the main structure (2) is arranged in a grid-like structure, being a cross-beam structure.

4. A structural arrangement of a type B fuel tank for a container ship according to claim 1, characterized in that the outer surface of the insulating plate (4) has a protective layer (5).

5. A structural arrangement of a type B bunker applied in a container ship, as set forth in claim 1, characterized in that a plurality of combustible gas detectors (25) for detecting leaked combustible gas are provided in the empty bunker (6) between said main hull (7) and the type B bunker (1).