Channel structure for narrow space of B-type cabin of oversized ethane transport ship

Abstract

The utility model relates to the field of shipbuilding, and provides a channel structure of a narrow space of a B-type cabin of a super-large ethane transport ship. Gaps between the inner walls of the cabin and the corresponding outer side walls of the B-type fuel cabin form channels, a plurality of channel units are installed on the vertical cabin wall of the cabin from top to bottom at equal intervals, each channel unit comprises a plurality of triangular supporting frames evenly distributed in the length direction of the B-type fuel cabin, and each triangular supporting frame comprises a horizontal supporting piece and an inclined supporting piece. Hinge seats are welded to the ends, away from the bulkhead, of the horizontal supporting pieces, the hinge seats are rotationally connected with widened supporting pieces through bolts, glass fiber reinforced plastic grids are installed on the top face pieces of the adjacent horizontal supporting pieces, and glass fiber reinforced plastic grids are installed between the adjacent widened supporting pieces. Through the adjustable channel structure, planning of a conventional construction space is reduced, the space of the channel structure is utilized, the width of the B-type cabin is widened, the cabin capacity is increased, and the loading capacity is improved.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding, specifically to the passage structure of the narrow space in the B-type compartment of a super-large ethane carrier. Background Technology

[0002] The global shipping market is currently experiencing a surge in demand for clean energy, and orders for ethane carriers are also increasing significantly. Due to their larger loading capacity and better fit with the hull structure, Type B cargo tanks are increasingly being used as cargo tanks in very large ethane carriers (VLECs).

[0003] As Type B tanks become increasingly larger, large Type B tanks are often installed in dry dock in two parts, with the external insulation at the joined section needing to be installed inside the dock. Shipyards typically use scaffolding for construction, and after the scaffolding is removed, to ensure adequate access for routine inspection and construction of the Type B tank, a sufficiently large passageway and space for insulation work are left between the Type B fuel tank and the main hull. Therefore, during the design phase, the width of the Type B tank is intentionally reduced, and the volume of the Type B tank directly affects the ship's loading capacity. Summary of the Invention

[0004] To ensure sufficient construction and inspection access within the ship's hold without reducing the size of the Type B fuel tank, this invention provides a passageway structure for the confined space of the Type B hold on ultra-large ethane carriers.

[0005] The technical solution adopted by this utility model is as follows:

[0006] The passageway structure of the confined B-type compartment of a supertanker ethane carrier includes the compartment itself and B-type fuel tanks installed within it. The gaps between the inner walls of the compartment and the corresponding outer walls of the B-type fuel tanks form passageways. The bottom of the B-type fuel tanks is supported on the inner bottom surface of the compartment by multiple matrix-distributed vertical supports. The shoulders of the B-type fuel tanks are connected to the corresponding side walls of the compartment by diagonal braces. A row of transverse anti-roll supports connects the bottom and top centerlines of the B-type fuel tanks to the corresponding inner walls of the compartment. Multiple passageway units are installed at equal intervals from top to bottom on the vertical bulkheads of the compartment, each extending along the length of the B-type fuel tank. The passage unit includes multiple triangular support frames evenly distributed along the length of the Type B fuel tank. The triangular support frames in the same passage unit are set at the same height. Each triangular support frame includes a horizontal support member and a diagonal brace member. The horizontal support member is fixedly welded to the tank wall, and the diagonal brace member is supported between the horizontal support member and the tank wall. A hinge seat is welded to the end of the horizontal support member away from the tank wall. The hinge seat is rotatably connected to a widened support member by bolts. When the widened support member is rotated to a horizontal position towards the Type B fuel tank, its end face cooperates with the end face of the horizontal support member for limiting the movement. Fiberglass grating is installed on the top surface of adjacent horizontal support members, and fiberglass grating is installed between adjacent widened support members.

[0007] Furthermore, connecting plates are welded to the end faces of the horizontal support and the widened support, respectively. Threaded holes are provided on the connecting plates. When the widened support rotates outward to a horizontal position, the two connecting plates are connected and fixed through the threaded holes and bolts.

[0008] Furthermore, limiting angle irons are welded to both ends of the top of the horizontal support member and the widened support member, and each limiting angle iron connects two adjacent horizontal support members or two adjacent widened support members. The fiberglass grating is supported and limited by the limiting angle irons.

[0009] Furthermore, a slope corresponding to the bottom slope of the Type B fuel tank is provided between the vertical inner wall and the bottom surface of the cabin, and an inclined ladder is installed on the slope.

[0010] Furthermore, the horizontal support, the inclined support, and the widened support are square tubes or angle steel.

[0011] Furthermore, an L-shaped connector is welded to one end of the widened support member near the horizontal support member. The L-shaped connector is hinged to the hinge seat by bolts. When the widened support member is rotated to the horizontal position in the direction of the B-type fuel tank, the top surface of the widened support member is flush with the top surface of the horizontal support surface.

[0012] Furthermore, when the widened support rotates toward the tripod side, its rotation angle is greater than 90°.

[0013] Furthermore, the length of the widened support member is half that of the horizontal support member.

[0014] After adopting the above technical solutions, the beneficial effects of this utility model are as follows: the adjustable channel structure reduces the conventional construction space planning, utilizes the space of the channel structure, widens the B-type cabin, increases the cabin volume, and improves the loading capacity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a structural diagram of a passageway unit.

[0017] Figure 3 This is a schematic diagram of the aisle unit in its retracted state.

[0018] In the diagram: Type B fuel tank, 2. Ship compartment, 3. Vertical support seat, 4. Diagonal brace seat, 5. Lateral anti-sway support, 6. Passageway, 7. Passageway unit, 71. Triangular support frame, 711. Horizontal support component, 712. Diagonal brace component, 72. Widened support component, 73. Limiting angle iron, 74. Fiberglass grating, 75. Hinge seat, 76. L-shaped connector, 77. Connecting plate, 8. Inclined surface, 9. Slope, 10. Inclined ladder. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0020] like Figure 1-3 As shown, the passageway structure of the confined space in the Type B compartment of the ultra-large ethane carrier is installed between Type B fuel tank 1 and compartment 2. The bottom of Type B fuel tank 1 is supported on the inner bottom surface of compartment 2 by multiple matrix-distributed vertical support seats 3. The shoulders of Type B fuel tank 1 are supported and connected to the corresponding side walls of compartment 2 by diagonal bracing seats 4. The bottom centerline and top centerline of Type B fuel tank 1 are respectively supported and connected to the corresponding inner walls of compartment 2 by a row of transverse anti-sway supports 5. The gaps between each inner wall of compartment 2 and the corresponding outer wall of Type B fuel tank form a passageway 6, and a passageway unit 7 for operators to stand in is installed within the passageway 6.

[0021] During the construction of the Type B fuel tank, the lower half of the fuel tank is installed and insulated first, followed by the hoisting of the upper half. Since the hull size is fixed, the Type B fuel tank can only be made as large as possible, maximizing its capacity, by minimizing the size of the passageway structure. Therefore, this technical solution adopts a foldable, adjustable passageway structure, which partially folds during hoisting to achieve the maximum design capacity of the Type B fuel tank.

[0022] Three layers of passage units 7 are installed at equal intervals from top to bottom on the vertical bulkhead of the cabin 2. Each layer of passage unit 7 extends along the length of the B-type fuel tank. The passage unit 7 consists of a triangular support frame 71, a widened support member 72, a limiting angle iron 73, and a fiberglass grating 74.

[0023] Triangular support frames 71 are evenly distributed along the length of the Type B fuel tank, with each frame at the same height. Each triangular support frame 71 consists of a horizontal support member 711 and a diagonal brace 712. One end of the horizontal support member 711 is fixedly welded to the bulkhead, and the other end is welded to the bulkhead via the diagonal brace 712, forming a stable three-way support structure. A hinge seat 75, which is a lug with a shaft hole, is welded to the end of the horizontal support member 711 furthest from the bulkhead. An L-shaped connector 76 is welded to the end of the widened support member 72 closest to the horizontal support member. The L-shaped connector 76 is hinged to the hinge seat 75 via bolts. When the widened support member 72 rotates towards the Type B fuel tank 1 to a horizontal position, its end face engages with the end face of the horizontal support member 711 for limiting movement, and the top surface of the widened support member 72 is flush with the top surface of the horizontal support member 711.

[0024] To ensure stable connection, connecting plates 77 are welded to the corresponding end faces of the horizontal support 711 and the widened support 72. Threaded holes are provided on the connecting plates 77. When the widened support 72 rotates outward to a horizontal position, the two connecting plates 77 fit together and are fixed in place by the threaded holes and bolts. Fiberglass grating 74 is installed on the top surface of adjacent horizontal support 711 members and between adjacent widened support 72 members, forming a platform for personnel to stand and work.

[0025] Limiting angle irons 73 are welded to both ends of the top of the horizontal support 711 and the widened support 72. Each limiting angle iron 73 is connected to two adjacent horizontal support 711 or two adjacent widened support 72. The fiberglass grating 74 is supported and limited by the corresponding limiting angle iron 73. The fiberglass grating 74 is fixed to the corresponding limiting angle iron 73 with screws to prevent slippage.

[0026] The top and bottom sides of the Type B fuel tank 1 are provided with inclined surfaces 8. A slope 9 corresponding to the bottom slope of the Type B fuel tank is provided between the vertical inner wall of the tank and the bottom surface. An inclined ladder 10 is installed on the slope 9, and personnel can carry out construction operations through the inclined ladder 10.

[0027] In this technical solution, the horizontal support 711, the inclined support 712, and the widened support 72 are made of square tubing or angle steel. The length of the widened support 72 is half that of the horizontal support 711, meaning that one-third of the passageway width can be retracted during hoisting. When the widened support 72 rotates towards the tripod side, its rotation angle is greater than 90°, preventing overturning during construction and avoiding safety accidents.

Claims

1. A passage structure of a narrow space of a B-type cabin of an ultra-large ethane carrier, comprising a ship cabin and a B-type fuel cabin installed in the ship cabin, a gap between each inner wall of the ship cabin and a corresponding outer side wall of the B-type fuel cabin forming a passage, a bottom of the B-type fuel cabin being supported on an inner bottom surface of the ship cabin through a plurality of vertically distributed vertical support seats, a shoulder of the B-type fuel cabin being supported and connected with a corresponding side wall of the ship cabin through an inclined support seat, a bottom center line and a top center line of the B-type fuel cabin being respectively supported and connected with a corresponding inner wall of the ship cabin through a row of transverse anti-rolling supports, characterized in that, The vertical bulkhead of the cabin is provided with a plurality of passage units at equal intervals from top to bottom, each of the passage units extends along the length direction of the B-type fuel tank, the passage units are uniformly distributed along the length direction of the B-type fuel tank and include a plurality of triangular support frames, the triangular support frames of the same passage unit are arranged at equal heights, the triangular support frames include horizontal support members and inclined support members, the horizontal support members are fixedly welded to the bulkhead, and the inclined support members are supported between the horizontal support members and the bulkhead; the end of the horizontal support member away from the bulkhead is welded with a hinge seat, the hinge seat is rotatably connected with a widened support member through bolts, and the end surface of the widened support member is limited by the end surface of the horizontal support member when the widened support member is rotated to a horizontal position towards the B-type fuel tank; the top surface of the adjacent horizontal support members is provided with a glass fiber reinforced plastic grid, and the glass fiber reinforced plastic grid is arranged between the adjacent widened support members.

2. The passage structure of the super large ethane carrier B-type hatch narrow space according to claim 1, characterized in that, The end surfaces of the horizontal support members and the widened support members are respectively welded with connecting plates, the connecting plates are provided with threaded holes corresponding to each other, and the two connecting plates are fixed through the threaded holes and bolts when the widened support member is rotated to a horizontal position outward.

3. The passage structure of the super large ethane carrier B-type hatch narrow space according to claim 2, characterized in that, The top of the horizontal support member and the widened support member is respectively welded with a limiting angle iron at both ends, the limiting angle iron connects two adjacent horizontal support members or two adjacent widened support members, and the glass fiber reinforced plastic grid is supported and limited by the limiting angle iron.

4. The ethane supercarrier B-type hatchway structure of claim 1, wherein, The vertical inner wall and the bottom surface of the cabin are provided with a slope surface corresponding to the slope of the bottom of the B-type fuel tank, and the slope surface is provided with an inclined ladder.

5. The ethane ultra large carrier B type hatchway structure according to claim 1, wherein, The horizontal support member, the inclined support member and the widened support member are square tubes or angle steels.

6. The ethane ultra large carrier B type hatchway structure of claim 1, wherein, The end of the widened support member close to the horizontal support member is welded with an L-shaped connecting piece, the L-shaped connecting piece is hingedly connected with the hinge seat through bolts, and the top surface of the widened support member is flush with the top surface of the horizontal support surface when the widened support member is rotated to a horizontal position towards the B-type fuel tank.

7. The ethane ultra large carrier B type hatchway structure according to claim 1, wherein, The widened support member is rotated to one side of the tripod, and the rotation angle is greater than 90°.

8. The ethane ultra large carrier B type hatchway structure according to claim 1, wherein, The length of the widened support member is half of the length of the horizontal support member.

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