Beam structure for LNG tank of dual-fuel vehicle roll-on / roll-off ship

Abstract

The application discloses a LNG cabin box-shaped beam structure of a dual-fuel automobile roll-on / roll-off ship, which comprises a LNG cabin deck above a LNG fuel tank; a support column is fixedly arranged on the upper surface of the LNG cabin deck; a first supporting beam, a second supporting beam, a first longitudinal beam and a second longitudinal beam are fixedly arranged on the lower surface of the LNG cabin deck; the vertical projection of the support column is located in the quadrilateral area surrounded by the first supporting beam, the second supporting beam, the first longitudinal beam and the second longitudinal beam; a panel is fixedly arranged on the bottom of the first supporting beam, and the panel is fixedly connected to the bottom of the second supporting beam, the first longitudinal beam and the second longitudinal beam. The application reduces the bending deformation and yield stress of the beam below the LNG cabin support column, and improves the safety of the structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ship technology, in particular to a liquefied natural gas tank beam structure of a dual-fuel vehicle roll-on / roll-off ship. BACKGROUND

[0002] The dual-fuel vehicle roll-on / roll-off ship is generally provided with a liquefied natural gas tank, and a liquefied natural gas independent tank is located in the liquefied natural gas tank.

[0003] Two struts are usually fixed above the deck of the liquefied natural gas tank. One of the struts is not close to the edge of the deck of the liquefied natural gas tank, and is usually arranged at the upper left of the deck of the liquefied natural gas tank. Due to the presence of the liquefied natural gas independent tank, the strut cannot extend to the area below the deck of the liquefied natural gas tank. When the strut bears vertical pressure, the liquefied natural gas tank frame will be deformed greatly, and the strength is difficult to meet.

[0004] For the conventional strengthening form of the strut, local thickening is usually used. In order to meet the strength requirement, the plate thickness of the thickening area is large, and the plate thickness often reaches more than 60 mm, the component width exceeds the conventional size, causing difficulty in structure transition, large vertical deformation, and leading to large structure risk. SUMMARY

[0005] The present application aims to overcome the above-mentioned defects in the prior art, and provides a liquefied natural gas tank beam structure of a dual-fuel vehicle roll-on / roll-off ship.

[0006] The present application solves the above-mentioned technical problems by the following technical solutions:

[0007] The liquefied natural gas tank beam structure of the dual-fuel vehicle roll-on / roll-off ship comprises a liquefied natural gas tank deck located above a liquefied natural gas fuel tank; a strut is fixed on the upper surface of the liquefied natural gas tank deck; a first support beam, a second support beam, a first longitudinal beam and a second longitudinal beam are fixed on the lower surface of the liquefied natural gas tank deck; the vertical projection of the strut is located in the area of the quadrilateral surrounded by the first support beam, the second support beam, the first longitudinal beam and the second longitudinal beam; a panel is fixed on the bottom of the first support beam, and the panel is also fixed on the bottom of the second support beam, the first longitudinal beam and the second longitudinal beam.

[0008] The first support beam, the second support beam, the first longitudinal beam, the second longitudinal beam, the panel and the liquefied natural gas tank deck form a box-shaped component.

[0009] The distance between the first support beam and the second support beam is not less than the longitudinal length of the strut; the distance between the first longitudinal beam and the second longitudinal beam is not less than the transverse length of the strut.

[0010] The first longitudinal beam and the second longitudinal beam are both T-shaped beams.

[0011] The first support crossbeam and the second support crossbeam are parallel.

[0012] The first longitudinal beam and the second longitudinal beam are parallel.

[0013] A third longitudinal beam is arranged between the first longitudinal beam and the second longitudinal beam, and the third longitudinal beam is located directly below the support column.

[0014] The panel is fixed to the bottom of the third longitudinal beam.

[0015] The third longitudinal beam is a T-shaped beam.

[0016] The edges of the panel extend to the outside of the area surrounded by the first support crossbeam, the second support crossbeam, the first longitudinal beam and the second longitudinal beam.

[0017] The box-shaped member formed by the first support crossbeam, the second support crossbeam, the first longitudinal beam, the second longitudinal beam, the panel and the liquefied natural gas tank deck in the application is used to bear the downward load on the support column, which greatly improves the bending modulus of the first support crossbeam and the second support crossbeam, thereby reducing the vertical deformation of the first support crossbeam and the second support crossbeam. The thickness of the reinforced area below the support column is reduced, the structure transition is natural, the bending deformation and yield stress of the crossbeam below the liquefied natural gas tank support column are reduced, and the safety of the structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a top view of the preferred embodiment of the application.

[0019] Figure 2 It is a side view of the preferred embodiment of the application. Figure 1 It is a sectional view along A-A in the preferred embodiment of the application.

[0020] Figure 3 It is a sectional view along B-B in the preferred embodiment of the application. Figure 2 DETAILED DESCRIPTION The preferred embodiment of the application is described below in combination with the drawings.

[0021] As shown in Figs. 1-4, a liquefied natural gas tank box crossbeam structure of a dual-fuel automobile roll-on / roll-off ship comprises a liquefied natural gas tank deck 10 located above a liquefied natural gas fuel tank; a support column 20 is fixedly arranged on the upper surface of the liquefied natural gas tank deck.

[0022] As shown in Figs. 1-4, a liquefied natural gas tank box crossbeam structure of a dual-fuel automobile roll-on / roll-off ship comprises a liquefied natural gas tank deck 10 located above a liquefied natural gas fuel tank; a support column 20 is fixedly arranged on the upper surface of the liquefied natural gas tank deck. Figure 1 、 Figure 2 and Figure 3 As shown in Figs. 1-4, a liquefied natural gas tank box crossbeam structure of a dual-fuel automobile roll-on / roll-off ship comprises a liquefied natural gas tank deck 10 located above a liquefied natural gas fuel tank; a support column 20 is fixedly arranged on the upper surface of the liquefied natural gas tank deck.

[0023] A first support crossbeam 11, a second support crossbeam 12, a first longitudinal beam 21 and a second longitudinal beam 22 are fixedly arranged on the lower surface of the liquefied natural gas tank deck 10.

[0024] The first support cross beam 11 and the second support cross beam 12 are distributed transversely, and the first longitudinal beam 21 and the second longitudinal beam 22 are distributed longitudinally; the first support cross beam 11, the second support cross beam 12, the first longitudinal beam 21 and the second longitudinal beam 22 enclose a quadrilateral. The quadrilateral is a rectangle.

[0025] The vertical projection of the support column 20 is located in the area of the quadrilateral enclosed by the first support cross beam 11, the second support cross beam 12, the first longitudinal beam 21 and the second longitudinal beam 22.

[0026] The distance between the first support cross beam 11 and the second support cross beam 12 is not less than the longitudinal length of the support column 20.

[0027] The distance between the first longitudinal beam 21 and the second longitudinal beam 22 is not less than the transverse length of the support column 20.

[0028] In the embodiment, the first longitudinal beam 21 and the second longitudinal beam 22 are both T-shaped beams.

[0029] In the embodiment, the first support cross beam 11 and the second support cross beam 12 are parallel; the first longitudinal beam 21 and the second longitudinal beam 22 are parallel.

[0030] The bottom of the first support cross beam 11 is fixedly provided with a panel 30, and the panel 30 is also fixedly connected to the bottom of the second support cross beam 12, the first longitudinal beam 21 and the second longitudinal beam 22.

[0031] The first support cross beam is fixedly connected to the first longitudinal beam and the second longitudinal beam; and the second support cross beam is fixedly connected to the first longitudinal beam and the second longitudinal beam.

[0032] The first support cross beam, the second support cross beam, the first longitudinal beam, the second longitudinal beam, the panel and the liquefied natural gas tank deck enclose a box-shaped member.

[0033] The edge of the panel 30 extends to the outside of the area enclosed by the first support cross beam 11, the second support cross beam 12, the first longitudinal beam 21 and the second longitudinal beam 22.

[0034] A third longitudinal beam 23 is arranged between the first longitudinal beam 21 and the second longitudinal beam 22, and the third longitudinal beam 23 is located directly below the support column 20. In the embodiment, the third longitudinal beam 23 is a T-shaped beam.

[0035] The panel 30 is also fixedly connected to the bottom of the third longitudinal beam 23.

[0036] In the present application, the box-shaped member formed by the first support cross beam, the second support cross beam, the first longitudinal beam, the second longitudinal beam, the panel and the liquefied natural gas tank deck is used to bear the downward load on the support column. The box-shaped member is a connecting structure, which greatly improves the bending modulus of the first support cross beam and the second support cross beam, thereby reducing the vertical deformation of the first support cross beam and the second support cross beam.

[0037] The present application reduces the thickness of the reinforced area below the support column, and the structure transition is natural.

[0038] The present application reduces the bending deformation and yield stress of the cross beam below the liquefied natural gas tank support column, and improves the safety of the structure.

[0039] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the protection scope of the present application.

Claims

1. A LNG tank beam structure of a dual-fuel vehicle roll-on / roll-off ship, comprising a LNG tank deck above a LNG fuel tank; a pillar is fixedly arranged on an upper surface of the LNG tank deck; characterized in that, The lower surface of the liquefied natural gas tank deck is fixedly provided with a first support cross beam, a second support cross beam, a first longitudinal beam and a second longitudinal beam; the vertical projection of the support column is located in the quadrilateral region surrounded by the first support cross beam, the second support cross beam, the first longitudinal beam and the second longitudinal beam; the bottom of the first support cross beam is fixedly provided with a panel, and the panel is fixedly connected to the bottom of the second support cross beam, the first longitudinal beam and the second longitudinal beam; the first support cross beam, the second support cross beam, the first longitudinal beam, the second longitudinal beam, the panel and the liquefied natural gas tank deck surround a box-shaped component; a third longitudinal beam is arranged between the first longitudinal beam and the second longitudinal beam, and the third longitudinal beam is located directly below the support column; the panel is fixedly connected to the bottom of the third longitudinal beam; and the support column is arranged above the panel.

2. The LNG tank beam structure of a dual-fuel vehicle roll-on / roll-off ship according to claim 1, wherein The distance between the first support cross beam and the second support cross beam is not less than the longitudinal length of the support column; and the distance between the first longitudinal beam and the second longitudinal beam is not less than the transverse length of the support column.

3. The LNG tank beam structure of a dual-fuel vehicle roll-on / roll-off ship according to claim 1, wherein The first longitudinal beam and the second longitudinal beam are both T-shaped beams.

4. The dual-fuel vehicle roll-on / roll-off ship liquefied natural gas tank beam structure of claim 1, wherein, The first support cross beam and the second support cross beam are parallel.

5. The dual-fuel vehicle roll-on / roll-off LNG bunker box beam structure of claim 1, wherein, The first longitudinal beam and the second longitudinal beam are parallel.

6. The dual-fuel vehicle roll-on / roll-off LNG bunker box beam structure of claim 1, wherein, The third longitudinal beam is a T-shaped beam.

7. The dual-fuel vehicle roll-on / roll-off LNG bunkering tank beam structure of claim 1, wherein, The edge of the panel extends to the outside of the region surrounded by the first support cross beam, the second support cross beam, the first longitudinal beam and the second longitudinal beam.

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