Large ethane transport ship liquid cargo tank structure with bulkheads and swing stopping walls

Abstract

The utility model relates to the field of ship construction, and provides a large ethane transport ship liquid cargo tank structure with bulkheads and swing stopping walls. A vertical sub-bulkhead is installed in the middle of the B-type liquid cargo tank in the length direction, the sub-bulkhead comprises a wall plate, a plurality of manholes distributed in a matrix mode are formed in the wall plate, manhole covers are installed at the manholes, the manhole covers are detachably installed on the front face of the wall plate, and the manhole covers are matched with the manholes in a sealed mode. When a hole cover is mounted on the manhole, the B-type liquid cargo tank is divided into two independent cabins by the sub-bulkhead; and after the manhole cover is detached, the sub-bulkhead is used as a swing stopping wall in the B-type liquid cargo tank. According to the technical scheme, the split bulkhead and the swing stopping wall can be used together through the structural design, the liquid cargo tank structure can be simplified, the structural weight can be reduced, the utilization rate of the liquid cargo tank is increased, and the liquid cargo loading flexibility is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of shipbuilding, and concretely relates to a large ethane transport ship liquid cargo hold structure with a bulkhead and a roll damping bulkhead. BACKGROUND

[0002] Due to the advantages of greater loading capacity, higher adhesion to the ship structure and higher cost performance, a B-type liquid cargo hold is used as a liquid cargo hold in a super large liquid cargo transport ship for transporting clean energy such as ethane and LNG. The main challenge of a liquid cargo ship lies in the sloshing of liquid cargo in the hold during transportation. The sloshing may have an adverse effect on the lateral stability of the ship, and may even cause capsizing or rolling in severe cases. This brings great risks to the operation of the crew and the safety of the cargo. Therefore, a large liquid cargo hold is usually provided with a liquid cargo hold roll damping structure to reduce the sloshing of liquid cargo in the hold and improve the navigation safety of the ship.

[0003] Three to four liquid cargo holds are usually provided on a large transport ship. In order to optimize the transportation space and realize the transportation of multiple liquid cargos, the liquid cargo hold needs to be divided into areas by a bulkhead to separate the B-type hold into two or more independent hold rooms. This results in the B-type hold having both a bulkhead and a roll damping bulkhead, which increases the cost and the structure weight, and the bulkhead arrangement limits the utilization rate of the liquid cargo hold, resulting in an increase in transportation cost. SUMMARY

[0004] In order to meet the requirements of bulkhead transportation when a large liquid cargo transport ship transports multiple liquid cargos and roll damping when the ship transports the same type of liquid cargo, the utility model provides a large ethane transport ship liquid cargo hold structure with a bulkhead and a roll damping bulkhead, which reduces the structure weight of the liquid cargo hold and improves the space utilization rate.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] The liquid cargo tank structure of a large ethane transport ship with a bulkhead and a stabilizing bulkhead comprises a closed B-type liquid cargo tank, a vertical bulkhead is installed at the middle position of the B-type liquid cargo tank in the length direction, the cross section of the bulkhead corresponds to the inner cross section of the B-type liquid cargo tank, the edges of the bulkhead are welded with the inner wall of the liquid cargo tank to form a seal, the bulkhead comprises a wall plate, a plurality of uniformly distributed vertical T-shaped profiles are welded on the back of the wall plate, and a plurality of uniformly distributed horizontal T-shaped profiles are welded on the back of the wall plate, the vertical T-shaped profiles and the horizontal T-shaped profiles are perpendicularly crossed and connected, the webs of the vertical T-shaped profiles are fixedly welded with the back of the wall plate, the webs of each horizontal T-shaped profile are provided with a T-shaped groove corresponding to a row of vertical T-shaped profiles, the horizontal T-shaped profiles are fixedly welded with the vertical T-shaped profiles through the T-shaped grooves, a plurality of manholes are arranged on the wall plate in a matrix, each manhole is located in a frame formed by the vertical T-shaped profiles and the horizontal T-shaped profiles, a manhole cover is installed at the manhole, the manhole cover is detachably installed on the front of the wall plate, and the manhole cover is in sealing cooperation with the manhole; when the manhole cover is installed on the manhole, the bulkhead divides the B-type liquid cargo tank into two independent compartments; after the manhole cover is removed, the bulkhead serves as a stabilizing bulkhead in the B-type liquid cargo tank.

[0007] Further, a plurality of uniformly distributed T-shaped grooves are arranged on the four side edges of the wall plate, and the T-shaped grooves are connected and matched with the inner wall of the B-type liquid cargo tank through connecting pieces.

[0008] Further, the manhole cover is fixedly connected with the wall plate through a ring of bolts.

[0009] Further, a pair of pull rings are installed on the manhole cover.

[0010] Further, a support seat is installed at the corresponding position of the bulkhead and the B-type liquid cargo tank, the support seat is fixedly installed on the outer plate of the B-type liquid cargo tank, and the support seat is connected with the ship body structure.

[0011] Still further, a plurality of horizontal girder structures are welded on the back of the bulkhead, the horizontal girder structure comprises a T-shaped plate, the web of the T-shaped plate is welded with the face plate of the horizontal T-shaped profile of the bulkhead, and the T-shaped plate is fixedly welded with the face plate of the vertical T-shaped profile of the bulkhead through a plurality of rib plates.

[0012] After the above technical scheme is adopted, the utility model has the following beneficial effects: by arranging matrix manholes on the conventional bulkhead and using detachable manhole covers, the bulkhead can be used as a stabilizing bulkhead, when the manhole cover is installed, the liquid cargo tank is divided into two compartments by the water-tight and air-tight manhole cover, and different types of liquid cargo can be loaded, at this time, the liquid cargo tank is divided into small compartments, and no additional stabilizing bulkhead is needed; when the manhole cover is removed, the bulkhead is used as a stabilizing bulkhead in the middle of the liquid cargo tank, and the influence of the liquid cargo on the navigation during transportation is avoided.

[0013] The technical scheme realizes the use of the bulkhead and the anti-swing wall, can simplify the liquid cargo tank structure, reduce the structure weight, improve the utilization rate of the liquid cargo tank and the flexibility of liquid cargo transportation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model.

[0015] Figure 2 It is a structural schematic view of the bulkhead.

[0016] Figure 3 It is a back three-dimensional schematic view of the bulkhead.

[0017] Figure 4 It is a structural schematic view of the manhole cover.

[0018] In the drawing: B-type liquid cargo tank 1, bulkhead 2, wall plate 21, vertical T-shaped section 22, horizontal T-shaped section 23, T-shaped groove 24, manhole 25, manhole cover 26, T-shaped plate 3, rib plate 4, support seat 5. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described in combination with the drawings as follows:

[0020] As shown in the drawing, the bulkhead and anti-swing wall of the large ethane transport ship liquid cargo tank structure, including the closed B-type liquid cargo tank 1, the B-type liquid cargo tank 1 installs the vertical bulkhead 2 in the length direction middle position, the cross section of the bulkhead 2 corresponds to the inner cross section of the B-type liquid cargo tank 1, the edge of the bulkhead 2 is welded with the inner wall of the liquid cargo tank to form a seal. The liquid cargo tank is divided into two independent and air-tight and water-tight compartments by the bulkhead 2, which can realize the simultaneous loading of different liquid cargoes in the liquid cargo tank and improve the flexibility of the liquid cargo ship.

[0021] The main structure of the bulkhead 2 is a wall plate 21, a plurality of evenly distributed vertical T-shaped sections 22 and a plurality of evenly distributed horizontal T-shaped sections 23 are welded on the back of the wall plate 21, the vertical T-shaped sections 22 and the horizontal T-shaped sections 23 are perpendicular and cross connected, the web of the vertical T-shaped section 22 is fixedly welded with the back of the wall plate 21, the web of each horizontal T-shaped section 23 is provided with a T-shaped groove 24 corresponding to a row of vertical T-shaped sections, the vertical T-shaped section 22 passes through the T-shaped groove 24 of the horizontal T-shaped section 23 and is fixedly welded with the vertical T-shaped section 22 through the T-shaped groove 24, and the horizontal T-shaped section 23 and the vertical T-shaped section 22 are welded on the back of the wall plate to form a grid-shaped reinforcing structure, thereby increasing the stability of the structure. The four side edges of the wall plate 21 are provided with a plurality of evenly distributed T-shaped grooves, and the T-shaped grooves are connected and matched with the inner wall of the B-type liquid cargo tank 1 through ball flat steel connecting pieces.

[0022] A plurality of manholes 25 are arranged in a matrix on the wall plate 21, each manhole is located in the frame formed by the intersection of the vertical T-shaped section 22 and the horizontal T-shaped section 23, and each manhole 25 is provided with a manhole cover 26, which is detachably installed on the front surface of the wall plate and is connected and fixed to the wall plate by a ring of bolts. A pair of pull rings are installed on the manhole cover 26 to facilitate the installation and removal of the manhole cover 26. The manhole cover 26 is in sealing cooperation with the manhole 25 to form an airtight and watertight seal. When the manhole cover 26 is installed on the manhole 25, the bulkhead 2 divides the B-type liquid cargo tank 1 into two independent compartments. Since the compartments are divided, the overall length of the compartments is halved, so there is no need to additionally set up a roll damping structure. After the manhole cover 26 is removed, the matrix-distributed manholes 25 on the bulkhead 2 serve as liquid-passing holes for roll damping, at which time the bulkhead serves as the roll damping wall of the B-type liquid cargo tank, reducing the impact of liquid cargo sloshing on the stability of the ship during transportation.

[0023] A plurality of horizontal girder structures are welded to the back of the bulkhead 2, which include T-shaped plates 3, the webs of the T-shaped plates 3 are welded to the face plates of the horizontal T-shaped sections 23 of the bulkhead 1, and the T-shaped plates 3 are welded and fixed to the face plates of the vertical T-shaped sections 22 of the bulkhead by a plurality of rib plates 4. The function of the horizontal girders is to strengthen the structure, which can reduce the required thickness of the horizontal / vertical T-shaped sections and achieve the purpose of overall weight reduction, and at the same time the horizontal girders can be used as a maintenance passage.

[0024] Laminated wood support seats 5 are installed at the corresponding positions of the bulkhead 2 and the B-type liquid cargo tank 1, the support seats 5 are fixedly installed on the outer plates of the B-type liquid cargo tank 1, and the support seats 5 are connected to the ship structure to form a buffer.

Claims

1. A large-sized ethane carrier ship liquid cargo tank structure of a sub- bulkhead and a roll-damping bulkhead, comprising a closed B-type liquid cargo tank, a vertical sub- bulkhead being installed at a middle position in a length direction in the B-type liquid cargo tank, a cross section of the sub- bulkhead corresponding to an inner cross section of the B-type liquid cargo tank, edges of the sub- bulkhead being welded to inner walls of the liquid cargo tank to form a seal, characterized in that, The bulkhead comprises a wall plate, a plurality of evenly distributed vertical T-shaped profiles welded on the back of the wall plate, and a plurality of evenly distributed horizontal T-shaped profiles, the vertical T-shaped profiles and the horizontal T-shaped profiles are perpendicularly crossed and connected, the web of the vertical T-shaped profile is fixedly welded on the back of the wall plate, the web of each horizontal T-shaped profile is provided with a T-shaped groove corresponding to a row of vertical T-shaped profiles, the horizontal T-shaped profile is fixedly welded on the vertical T-shaped profile through the T-shaped groove, a plurality of manholes are arranged on the wall plate in a matrix distribution, each manhole is located in a frame formed by the vertical T-shaped profile and the horizontal T-shaped profile, a manhole cover is installed at the manhole, the manhole cover is detachably installed on the front of the wall plate, and the manhole cover is sealingly matched with the manhole; when the manhole cover is installed on the manhole, the bulkhead divides the B-type liquid cargo tank into two independent compartments; after the manhole cover is removed, the bulkhead serves as a fender bulkhead in the B-type liquid cargo tank.

2. The large-sized ethane carrier ship cargo tank structure of a subdivision bulkhead and a roll-reducing bulkhead according to claim 1, characterized by, The four side edges of the wall plate are provided with a plurality of evenly distributed T-shaped grooves, and the T-shaped grooves are connected and matched with the inner wall of the B-type liquid cargo tank through connecting pieces.

3. The large-sized ethane carrier ship cargo tank structure of the subdivision bulkhead and the anti-rolling bulkhead according to claim 1, characterized by, The manhole cover is connected and fixed with the wall plate through a ring of bolts.

4. The large-sized ethane carrier ship cargo tank structure of the subdivision bulkhead and the anti-rolling bulkhead according to claim 1, characterized by, A pair of pull rings are installed on the manhole cover.

5. The large-sized ethane carrier ship cargo tank structure of a subdivision bulkhead and a roll-reducing bulkhead according to claim 1, characterized by, Support seats are installed at positions corresponding to the bulkhead and the B-type liquid cargo tank, the support seats are fixedly installed on the outer plate of the B-type liquid cargo tank, and the support seats are connected with the ship structure.

6. The large ethane carrier ship cargo tank structure of a subdivision bulkhead and a roll-reducing bulkhead according to claim 1, characterized by, A plurality of horizontal girder structures are welded on the back of the bulkhead, the horizontal girder structure comprises a T-shaped plate, the web of the T-shaped plate is welded on the panel of the horizontal T-shaped profile of the bulkhead, and the T-shaped plate is fixedly welded on the panel of the vertical T-shaped profile of the bulkhead through a plurality of rib plates.

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