Top pier structure of oil storage bulk carrier

Abstract

The present invention discloses a top pier structure of an oil storage type bulk carrier, which is arranged above a groove-shaped transverse bulkhead, and the front and rear of the groove-shaped transverse bulkhead are both cargo holds; the top side tanks located on the left side and the right side of the cargo hold are both top side ballast water tanks; two plate wall members are arranged between the top of the groove-shaped transverse bulkhead and the main deck; the two plate wall members, the top of the groove-shaped transverse bulkhead and the main deck form a fuel oil tank for storing fuel oil; the left bulkhead and the right bulkhead of the fuel oil tank are both the bulkheads of the top side ballast water tank; reinforcing members are arranged on the main deck and the plate wall members, and the reinforcing members of the plate wall members are only arranged in the fuel oil tank. Aiming at bulk carriers with limited ballast water, the present invention designs a top pier arrangement scheme that can store oil, which makes up for the defects of traditional fuel oil tanks and top pier arrangements.

Description

Technical Field

[0001] The invention relates to the technical field of ships, and in particular to a top pier structure of an oil storage type bulk carrier. Background Art

[0002] With the vigorous development of the shipping industry, the requirements for ship endurance are getting higher and higher, and the capacity of fuel oil storage tanks is getting larger and larger. However, it is impossible to arrange an ultra-large fuel oil storage tank in the limited space of the engine room, so bulk carriers often arrange the fuel oil tank in the topside tank.

[0003] like Figure 1 As shown, a cargo hold 90 is provided in front and rear of the grooved transverse bulkhead 91, and the top side tanks of the cargo hold include a fuel oil tank 92 and a top side ballast water tank 93; the fuel oil tank 92 is close to the engine room 95; a longitudinal bulkhead 96 is set between the fuel oil tank 92 and the hull outer plating, and an isolation space 94 is formed between the longitudinal bulkhead 96 and the hull outer plating, so that double hull protection is formed for the fuel oil tank to avoid fuel leakage.

[0004] This arrangement will reduce the amount of ballast water in the topside tanks, which is especially disadvantageous when ballast water is in short supply. In addition, the storage of fuel oil in the topside tanks requires the arrangement of an isolated empty tank between the fuel tank and the outer plate to meet the requirements of fuel tank protection, and the additional longitudinal bulkhead causes an increase in weight.

[0005] In addition, the top pier of a traditional bulk carrier is usually of rectangular cross-section. Due to the angle of repose of the cargo, even if the hold is fully loaded, the cargo cannot fill the angle between the top pier and the main deck, resulting in insufficient utilization of the cargo hold capacity and failure to limit the longitudinal movement of the top cargo. In addition, the reinforced structure on the back of the transverse deck strips is exposed to the cargo hold, with a large corrosion allowance. For example, the standard calculates the corrosion allowance of the main deck to be 4mm, and the reinforced corrosion allowance on the back of the main deck to be 4.5mm. This results in the main deck and reinforced components being large in size and heavy in weight, and there may also be accumulation of cargo, leading to insufficient unloading. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a top pier structure for an oil storage type bulk carrier.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] A top pier structure of an oil storage type bulk carrier is arranged above a corrugated transverse bulkhead, the front and rear of the corrugated transverse bulkhead are both cargo holds; the topside tanks located on the left side and the right side of the cargo hold are both topside ballast water tanks; two plate wall members are arranged between the top of the corrugated transverse bulkhead and the main deck; one of the plate wall members extends obliquely from the top of the corrugated transverse bulkhead toward the front of the corrugated transverse bulkhead to the main deck, and the other plate wall member extends obliquely from the top of the corrugated transverse bulkhead toward the rear of the corrugated transverse bulkhead to the main deck; the two plate wall members, the top of the corrugated transverse bulkhead and the main deck form a fuel oil tank for storing fuel oil; the left bulkhead and the right bulkhead of the fuel oil tank are both bulkheads of the topside ballast water tank; reinforcing components are arranged on the main deck and the plate wall members, and the reinforcing components of the plate wall members are only arranged in the fuel oil tank.

[0009] A longitudinal reinforcing plate is provided in the fuel oil tank, the middle part of which is hollowed out; the upper end of the longitudinal reinforcing plate is fixedly connected to the main deck; the front end and the rear end of the longitudinal reinforcing plate are respectively fixedly connected to two plate wall members; and the lower end of the longitudinal reinforcing plate is fixedly connected to the top of the grooved transverse bulkhead.

[0010] There are multiple longitudinal reinforcing plates, and the longitudinal reinforcing plates are parallel to each other.

[0011] The longitudinal stiffener is perpendicular to the plate wall member and the longitudinal stiffener is perpendicular to the main deck.

[0012] The reinforcing component of the panel wall member includes a first transverse reinforcing rib, which is fixed to the panel wall member; there are multiple first transverse reinforcing ribs.

[0013] The first transverse reinforcement rib is located in the fuel oil tank.

[0014] The reinforcing member of the main deck comprises a second transverse reinforcing rib, which is fixed to the bottom of the main deck; there are a plurality of second transverse reinforcing ribs.

[0015] The second transverse reinforcement rib is located in the fuel oil tank.

[0016] The top of the corrugated transverse bulkhead is the top plate, and the plate wall members are fixedly connected to the top plate.

[0017] The plate wall parts include vertical plates and side plates; the vertical plates are vertically fixed to the main deck, and the side plates are obliquely distributed; the two ends of the side plates are respectively fixed to the vertical plates and the top of the corrugated transverse bulkhead.

[0018] The beneficial effects of the present invention are as follows: the present invention uses the top pier of the groove-type transverse bulkhead for oil storage, thereby solving the problem of fuel storage. The fuel oil tank in the original topside tank is eliminated to form a ballast water tank, and the longitudinal bulkhead protected by the double hull is eliminated, thereby increasing the total amount of ballast water, which is beneficial to improving the stability of the ship. The longitudinal bulkhead arrangement of the topside fuel tank is eliminated to isolate the empty tank, and the corrosion allowance of the main deck and the reinforcement components is reduced, saving weight. The side plates of the plate wall parts are obliquely distributed and form an angle with the horizontal, playing a similar role to the inclined plates of the topside tanks, which can limit the longitudinal movement of cargo and improve the utilization rate of the cargo hold capacity. The vertical plates of the plate wall parts can enhance the lateral stiffness of the entire transverse bulkhead and improve the anti-buckling capacity of the deck strips. The reinforcement components of the main deck are located inside the fuel oil tank, and the reinforcement components of the plate wall parts are all placed inside the fuel oil tank, so that the surface of the plate wall parts facing the cargo hold can be a smooth surface, which makes the cargo hold smooth and is conducive to cleaning. Aiming at bulk carriers with limited ballast water, the present invention designs a top pier arrangement scheme capable of storing oil, thereby making up for the defects of traditional fuel oil tanks and top pier arrangements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the existing bulk carrier top pier structure.

[0020] Figure 2 It is a schematic top view of a preferred embodiment of the present invention.

[0021] Figure 3 for Figure 2 AA section diagram.

[0022] Figure 4 for Figure 2 Schematic diagram of the BB cross-section.

[0023] Figure 5 This is a schematic structural diagram of a fuel oil tank according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0024] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0025] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a top pier structure of an oil storage type bulk carrier is arranged above a corrugated transverse bulkhead 10, and the front and rear of the corrugated transverse bulkhead 10 are cargo holds 30.

[0026] The topside tanks located on the left side of the cargo hold 30 and the right side of the cargo hold 30 are both topside ballast water tanks 40 .

[0027] Two plate wall members 50 are provided between the top of the corrugated transverse bulkhead 10 and the main deck 20; one of the plate wall members extends obliquely from the top of the corrugated transverse bulkhead toward the front of the corrugated transverse bulkhead to the main deck, and the other plate wall member extends obliquely from the top of the corrugated transverse bulkhead toward the rear of the corrugated transverse bulkhead to the main deck.

[0028] The two plate wall members 50, the top of the corrugated transverse bulkhead 10 and the main deck 20 form a fuel oil tank 60 for storing fuel oil.

[0029] The left bulkhead 61 and the right bulkhead 62 of the fuel oil tank 60 are both bulkheads of the top ballast water tank 40 .

[0030] Both the main deck 20 and the panel wall member 50 are provided with reinforcement components, and the reinforcement components of the panel wall member 50 are only provided in the fuel oil tank 60.

[0031] A longitudinal reinforcing plate 63 is provided in the fuel oil tank 60, and the middle portion of the longitudinal reinforcing plate 63 is hollowed out.

[0032] The upper end of the longitudinal reinforcing plate 63 is fixed to the main deck 20 ; the front and rear ends of the longitudinal reinforcing plate 63 are respectively fixed to the two plate wall members 50 ; and the lower end of the longitudinal reinforcing plate 63 is fixed to the top of the corrugated transverse bulkhead 10 .

[0033] There are multiple longitudinal reinforcing plates 63 , and the longitudinal reinforcing plates 63 are parallel to each other. Figure 5 Only one longitudinal reinforcing plate is shown in the figure. The longitudinal reinforcing plate 63 is perpendicular to the plate wall member 50 and the longitudinal reinforcing plate 63 is perpendicular to the main deck 20.

[0034] The reinforcing member of the plate wall member 50 includes a first transverse reinforcing rib 71 , which is fixed to the plate wall member 50 ; there are a plurality of first transverse reinforcing ribs 71 , and the first transverse reinforcing ribs 71 are located in the fuel oil tank 60 .

[0035] The reinforcing member of the main deck 20 includes a second transverse reinforcing rib 72 , which is fixed to the bottom of the main deck 20 ; there are a plurality of second transverse reinforcing ribs 72 .

[0036] The second transverse reinforcement rib 72 is located inside the fuel oil tank 60 .

[0037] The top of the corrugated transverse bulkhead 10 is a top plate 11 , and the plate wall member 50 is fixedly connected to the top plate 11 .

[0038] The panel wall member can have various structural forms. In this embodiment, the panel wall member 50 includes a vertical plate 52 and a side plate 51; the vertical plate 52 is vertically fixed to the main deck 20, and the side plate 51 is obliquely distributed; the two ends of the side plate 51 are respectively fixed to the vertical plate 52 and the top of the corrugated transverse bulkhead 10.

[0039] The present invention uses the top pier of the grooved transverse bulkhead for oil storage, thereby solving the fuel oil storage problem.

[0040] The present invention eliminates the original fuel oil tank in the top side tank to form a ballast water tank, and eliminates the longitudinal bulkhead protected by the double hull, thereby increasing the total amount of ballast water and being beneficial to improving the stability of the ship.

[0041] The present invention eliminates the need for longitudinal bulkhead arrangement of the top fuel tank isolating the void tank, reduces the corrosion allowance of the main deck and the reinforcement components, and saves weight.

[0042] In the present invention, the side plates of the panel wall members are obliquely distributed and form an angle with the horizontal, playing a role similar to that of the inclined plates of the top side tanks, which can limit the longitudinal movement of the cargo and improve the utilization rate of the cargo hold capacity.

[0043] In the present invention, the vertical plates of the panel wall members can enhance the transverse rigidity of the entire transverse bulkhead and improve the anti-buckling capacity of the deck strips.

[0044] In the present invention, the reinforcement components of the main deck are located inside the fuel oil tank, and the reinforcement components of the panel wall parts are all placed inside the fuel oil tank, so that the surface of the panel wall parts facing the cargo hold can be smooth, thus making the cargo hold smooth and facilitating cleaning.

[0045] Aiming at bulk carriers with limited ballast water, the present invention designs a top pier arrangement scheme capable of storing oil, thereby making up for the defects of traditional fuel oil tanks and top pier arrangements.

[0046] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A top pier structure of an oil storage bulk carrier, which is arranged above a corrugated transverse bulkhead, and the front and rear of the corrugated transverse bulkhead are both cargo holds; characterized in that: The topside tanks on the left and right sides of the cargo hold are both topside ballast water tanks; two plate wall members are provided between the top of the corrugated transverse bulkhead and the main deck; one of the plate wall members extends obliquely from the top of the corrugated transverse bulkhead toward the front of the corrugated transverse bulkhead to the main deck, and the other plate wall member extends obliquely from the top of the corrugated transverse bulkhead toward the rear of the corrugated transverse bulkhead to the main deck; Two plate wall members, the top of the grooved transverse bulkhead and the main deck form a fuel oil tank for storing fuel oil; the left bulkhead and the right bulkhead of the fuel oil tank are both bulkheads of the top ballast water tank; reinforcing components are provided on the main deck and the plate wall members, and the reinforcing components of the plate wall members are only provided in the fuel oil tank; the reinforcing components of the plate wall members include first transverse reinforcing ribs, which are fixedly connected to the plate wall members; there are multiple first transverse reinforcing ribs; the reinforcing components of the main deck include second transverse reinforcing ribs, which are fixedly connected to the bottom of the main deck; there are multiple second transverse reinforcing ribs.

2. The top pier structure of an oil storage type bulk carrier according to claim 1, characterized in that: A longitudinal reinforcing plate is provided in the fuel oil tank, the middle part of which is hollowed out; the upper end of the longitudinal reinforcing plate is fixedly connected to the main deck; the front end and the rear end of the longitudinal reinforcing plate are respectively fixedly connected to two plate wall members; and the lower end of the longitudinal reinforcing plate is fixedly connected to the top of the grooved transverse bulkhead.

3. The top pier structure of an oil storage type bulk carrier according to claim 2, characterized in that: There are multiple longitudinal reinforcing plates, and the longitudinal reinforcing plates are parallel to each other.

4. The top pier structure of an oil storage type bulk carrier according to claim 2, characterized in that: The longitudinal stiffener is perpendicular to the plate wall member and the longitudinal stiffener is perpendicular to the main deck.

5. The top pier structure of an oil storage type bulk carrier according to claim 1, characterized in that: The first transverse reinforcement rib is located in the fuel oil tank.

6. The top pier structure of an oil storage type bulk carrier according to claim 1, characterized in that: The second transverse reinforcement rib is located in the fuel oil tank.

7. The top pier structure of an oil storage type bulk carrier according to claim 1, characterized in that: The top of the corrugated transverse bulkhead is the top plate, and the plate wall members are fixedly connected to the top plate.

8. The top pier structure of an oil storage type bulk carrier according to claim 1, characterized in that: The plate wall parts include vertical plates and side plates; the vertical plates are vertically fixed to the main deck, and the side plates are obliquely distributed; the two ends of the side plates are respectively fixed to the vertical plates and the top of the corrugated transverse bulkhead.

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