Ship flexible structure duct

Abstract

The present invention discloses a ship flexible structure air duct, which is arranged below the vehicle deck of a roll-on / roll-off ship; it includes a transverse pipe section and a vertical pipe section; the transverse pipe section is fixedly arranged at the bottom of the vehicle deck; the upper end of the vertical pipe section is fixedly connected to the transverse pipe section; an air outlet is arranged below the transverse pipe section; the pipe wall of the transverse pipe section and the pipe wall of the vertical pipe section are both ribbed plates; the ribbed plate includes a plate-like body, the plate-like body is provided with a plurality of grooves, and the grooves are distributed along the plate-like body in a straight line; the grooves are parallel to each other; the vertical distance from the bottom of the groove to the plate-like body is less than 50mm; the groove of the ribbed plate of the transverse pipe section is perpendicular to the length direction of the transverse pipe section; the groove of the ribbed plate of the vertical pipe section is perpendicular to the length direction of the vertical pipe section; the opening of the groove of the ribbed plate of the vertical pipe section is all located inside the vertical pipe section. The present invention has a light structure, low design difficulty, no need to consider the problem of cracks easily generated at the edge of the air duct opening, and low manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a ship flexible structure air duct. Background Art

[0002] The vehicle deck of a ro-ro ship has a large design load (generally a uniformly distributed load of 3 tons per square meter and an axle load of about 20 tons) because it needs to carry heavy trucks. The ventilation ducts of the equipment compartments (such as the engine room) under the vehicle deck are currently generally designed as rigid ducts, that is, the traditional plate rib structure.

[0003] This type of duct structure will be used as a strong component to bear the load of the vehicle deck. According to the corresponding specifications of the hull structure, the calculated structural dimensions will be large, which will greatly increase the weight of the duct. At the same time, the reinforcement ribs on the duct wall increase the ventilation resistance and affect the ventilation effect. In addition, at the duct outlet, it is inevitable to open a large hole on the structural duct, and cracks are easily generated at the edge of the hole.

[0004] Existing structural duct designs all adopt a rigid structure design in the form of plate reinforcement, which is difficult to design, has large structural dimensions, heavy weight, and high cost, affecting the economy of the ship; in addition, cracks are easily generated on the edges of the duct openings, affecting the safety of the ship. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a ship flexible structure air duct.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A ship flexible structure air duct is arranged below the deck; it comprises a transverse pipe section and a vertical pipe section; the transverse pipe section is fixedly arranged at the bottom of the deck; the transverse pipe section and the deck form a transverse ventilation duct; the upper end of the vertical pipe section is fixedly connected to the transverse pipe section; the vertical pipe section forms a vertical ventilation duct; the transverse ventilation duct and the vertical ventilation duct are connected; an air outlet is arranged below the transverse pipe section; the pipe wall of the transverse pipe section and the pipe wall of the vertical pipe section are both ribbed plates; the ribbed plate comprises a plate-like body, a plurality of grooves are arranged on the plate-like body, and the grooves are distributed in a straight line along the plate-like body; the grooves are parallel to each other; the vertical distance from the bottom of the groove to the plate-like body is less than 50 mm; the groove of the ribbed plate of the transverse pipe section is perpendicular to the length direction of the transverse pipe section; the groove of the ribbed plate of the vertical pipe section is perpendicular to the length direction of the vertical pipe section; the groove openings of the ribbed plate of the vertical pipe section are all located inside the vertical pipe section.

[0008] The distances between adjacent grooves on the ribbed plates of the transverse pipe section are all the same.

[0009] The distances between adjacent grooves on the ribbed plates of the vertical pipe sections are all the same.

[0010] The groove openings of the transverse pipe section are all located outside the transverse pipe section.

[0011] The cross section of the vertical pipe section is rectangular.

[0012] The upper end of the vertical pipe section is also fixed to the deck.

[0013] The upper end of the vertical pipe section is connected to the horizontal pipe section by welding.

[0014] The upper end of the vertical pipe section is connected to the deck by welding.

[0015] The cross section of the transverse pipe section is rectangular.

[0016] The deck is a vehicle deck of a ro-ro ship.

[0017] The beneficial effects of the present invention are as follows: the ship's flexible structural air duct of the present invention has an air duct wall composed of a ribbed plate structure; by utilizing the flexible structural characteristics of the ribbed plate in a direction perpendicular to the groove, the structural air duct does not need to bear the load of the vehicle deck, and does not need to meet the corresponding specifications of the hull structure, and the vehicle load is still borne by the original hull structure. The ship's flexible structural air duct of the present invention only needs to ensure air tightness, the structural dimensions can be greatly reduced, the weight of the air duct can be reduced, and the shipyard construction cost can be saved; at the same time, there are only grooves of less than 50 mm on the air duct wall, and there is no need to weld reinforcing ribs, which reduces ventilation resistance and has a better ventilation effect. In addition, at the air outlet of the air duct, the openings on the wall do not need to consider the strength problem, and the size of the openings can be freely selected, which not only reduces the design difficulty of the structural air duct, but also avoids the problem of cracks easily occurring at the edges of the openings of the rigid air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention.

[0019] Figure 2 for Figure 1 AA section diagram.

[0020] Figure 3 It is a schematic structural diagram of a ribbed plate according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0021] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0022] like Figure 1 , Figure 2 and Figure 3As shown, a ship flexible structure air duct is arranged below the vehicle deck 10 of a ro-ro ship; it includes a transverse pipe section 20 and a vertical pipe section 30; the transverse pipe section 20 is fixed to the bottom of the vehicle deck 10; the upper end of the vertical pipe section 30 is fixed to the transverse pipe section 20; and an air outlet 11 is provided below the transverse pipe section 20.

[0023] The transverse pipe section and the deck form a transverse ventilation passage 51, and the vertical pipe section forms a vertical ventilation passage 52. The transverse ventilation passage and the vertical ventilation passage are connected.

[0024] The pipe wall of the transverse pipe section 20 and the pipe wall of the vertical pipe section 30 are both ribbed plates 40. In this embodiment, the material of the ribbed plates is steel.

[0025] The ribbed plate 40 includes a plate-like body 41 , on which a plurality of grooves 42 are arranged, and the grooves are distributed in a straight line along the plate-like body; the grooves are parallel to each other; and the vertical distance from the bottom of the groove 42 to the plate-like body 41 is less than 50 mm.

[0026] The grooves of the ribbed plate of the transverse pipe section 20 are perpendicular to the length direction of the transverse pipe section 20. The distances between adjacent grooves on the ribbed plate of the transverse pipe section 20 are the same. The openings of the grooves of the transverse pipe section 20 are all located outside the transverse pipe section. The cross section of the transverse pipe section is rectangular.

[0027] The grooves of the ribbed plate of the vertical pipe section 30 are perpendicular to the length direction of the vertical pipe section 30 ; and the openings of the grooves of the ribbed plate of the vertical pipe section 30 are all located inside the vertical pipe section.

[0028] The distances between adjacent grooves on the ribbed plate of the vertical pipe section 30 are all the same. The cross section of the vertical pipe section is rectangular.

[0029] The upper end of the vertical pipe section 30 is also fixed to the vehicle deck.

[0030] The upper end of the vertical pipe section 30 is connected to the transverse pipe section by welding. The upper end of the vertical pipe section 30 is connected to the vehicle deck by welding.

[0031] exist Figure 2 In the figure, the solid arrow indicates the direction of wind flow.

[0032] Rigid plate (such as Figure 3 (As shown) is a pressed profile plate with a thickness of generally 5 to 6 mm. It has the advantages of light weight and simple construction.

[0033] The ribbed panels have different strength characteristics in two directions, such as Figure 3 As shown, the rigidity in the X direction is relatively large, and it can be used as a strength wall; the rigidity in the Y direction is relatively small, and due to the presence of the groove, deformation within a certain range can be allowed, and it has the characteristics of a flexible structure.

[0034] The ship's flexible structural air duct of the present invention has an air duct wall composed of a ribbed plate structure. By utilizing the flexible structural characteristics of the ribbed plate in the Y direction, the structural air duct does not need to bear the load of the vehicle deck and does not need to meet the corresponding specifications of the hull structure. The vehicle load is still borne by the original hull structure.

[0035] The ship flexible structure air duct of the present invention only needs to ensure air tightness, the structural size can be greatly reduced, the weight of the air duct can be reduced, and the shipyard construction cost is saved; at the same time, there is only a groove of less than 50mm on the air duct wall, and there is no need to weld reinforcing ribs, which reduces ventilation resistance and has a better ventilation effect.

[0036] In addition, at the air outlet of the air duct, there is no need to consider the strength of the openings on the surrounding wall, and the size of the openings can be freely selected, which not only reduces the design difficulty of the structural air duct, but also avoids the problem of cracks easily forming on the edges of the openings in the rigid air duct.

[0037] The structure of the present invention is light in weight, has low design difficulty, does not need to consider the problem of cracks being easily generated at the edge of the air duct opening, and has low manufacturing cost.

[0038] 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 ship flexible structure air duct, which is arranged below the deck; characterized in that: It comprises a transverse pipe section and a vertical pipe section; the transverse pipe section is fixed at the bottom of the deck; the transverse pipe section and the deck form a transverse ventilation duct; the upper end of the vertical pipe section is fixed to the transverse pipe section; the vertical pipe section forms a vertical ventilation duct; the transverse ventilation duct and the vertical ventilation duct are connected; an air outlet is arranged below the transverse pipe section; the pipe wall of the transverse pipe section and the pipe wall of the vertical pipe section are both ribbed plates; the ribbed plate comprises a plate-like body, a plurality of grooves are arranged on the plate-like body, and the grooves are distributed in a straight line along the plate-like body; the grooves are parallel to each other; the vertical distance from the bottom of the groove to the plate-like body is less than 50 mm; the groove of the ribbed plate of the transverse pipe section is perpendicular to the length direction of the transverse pipe section; the groove of the ribbed plate of the vertical pipe section is perpendicular to the length direction of the vertical pipe section; the groove openings of the ribbed plate of the vertical pipe section are all located inside the vertical pipe section; the upper end of the vertical pipe section is also fixed to the deck; the cross section of the transverse pipe section is rectangular; the deck is a vehicle deck of a roll-on / roll-off ship.

2. The ship flexible structure air duct according to claim 1, characterized in that: The distances between adjacent grooves on the ribbed plates of the transverse pipe section are all the same.

3. The ship flexible structure air duct according to claim 1, characterized in that: The distances between adjacent grooves on the ribbed plates of the vertical pipe sections are all the same.

4. The ship flexible structure air duct according to claim 1, characterized in that: The groove openings of the transverse pipe section are all located outside the transverse pipe section.

5. The ship flexible structure air duct according to claim 1, characterized in that: The cross section of the vertical pipe section is rectangular.

6. The ship flexible structure air duct according to claim 1, characterized in that: The upper end of the vertical pipe section is connected to the horizontal pipe section by welding.

7. The ship flexible structure air duct according to claim 1, characterized in that: The upper end of the vertical pipe section is connected to the deck by welding.

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