A multi-functional support device for a rhombic independent fuel tank

Abstract

The present invention relates to a multifunctional support device for a rhombic independent fuel tank, belonging to the technical field of ship design and manufacturing. A multifunctional support device is provided between the fuel tank and the hull. The multifunctional support device includes a main hull side support structure, a fuel tank side support structure, and laminated wood; the longitudinal support structure part between the main hull side support structure and the fuel tank side support structure is arranged along the ship length direction, and the vertical support structure part is arranged along the ship width direction. The vertical load is transmitted by the laminated wood between the main hull side horizontal support panel and the fuel tank side horizontal support panel, and the longitudinal load is transmitted through the laminated wood before and after between the main hull side longitudinal baffle and the fuel tank side longitudinal baffle. By means of the present invention, while adding the longitudinal support function, the load of other vertical support devices is not increased, the bearing capacity is stronger, the structure is smaller, and the number of laminated wood can be saved.

Description

Technical Field

[0001] The present invention relates to a multifunctional support device for a rhombic independent fuel tank, and belongs to the technical field of ship design and manufacturing. Background Art

[0002] Vessels using liquefied gas as fuel or vessels transporting liquefied gas all need to use special liquid tanks to load liquefied gas. The rhombic independent fuel tank adopts a flat bulkhead structure form and is connected to the main hull through a variety of support devices. Among them, the vertical support device provides vertical support for the fuel tank, the anti-pitching support device can limit the longitudinal displacement of the fuel tank, and the anti-floating device prevents the liquid tank from floating up and colliding with the main hull after the main hull is damaged and flooded. At present, for the design scheme of the tank support device structure of the rhombic independent fuel tank or the transport ship, for example, Chinese Patent No. CN 104925226 B discloses a longitudinal limit structure of a liquefied gas carrier. The longitudinal limit structure includes front and rear limit bodies at the bottom of the main hull and a matching support seat on the bottom surface of the liquid tank. Laminated wood and epoxy resin are provided in the gap between the end faces of the matching support seat and the front and rear limit bodies. It can effectively bear the longitudinal components of the static and dynamic loads of the main hull, the liquid tank and the liquid cargo loaded therein, and prevent the longitudinal movement of the liquid tank relative to the main hull. However, the above longitudinal limit structure scheme is usually only applicable to transport ships. This limit structure occupies a position where a vertical support seat can be arranged. Due to the large bottom area of the liquid tank, the number of vertical support seats is relatively large. For the fuel tank, due to the short length of the fuel tank and the inward contraction of the bottom line of the main hull, the bottom area of the fuel tank is small; the number of vertical support seats is small and each one bears a large force, so it is not advisable to further reduce the number of vertical support seats. In this way, there is a problem that the longitudinal support device is difficult to arrange. Chinese Patent No. CN 212921872 U discloses a B-type independent storage tank support device, and a top support mechanism is arranged between the storage tank body and the inner shell of the main ship. By adopting the top support mechanism, this scheme reduces the bottom support structure and disperses the B-type independent storage tank support structure from being concentrated at the bottom to multiple constraint surfaces at the top, which is particularly applicable to the tank type with a smaller cross-sectional area at the bottom of the storage tank. However, the above support structure is not applicable to the bottom of the liquid tank because the vertical load at the bottom of the liquid tank is greater and the available space for arrangement is smaller. The height of the longitudinal support seat on the side of the main hull of this structure is greater than the sum of the height of the anti-floating support seat on the side of the main hull, the thickness of the anti-floating laminated wood and the width of the longitudinal laminated wood, and the size is difficult to be further optimized; the acting point of the longitudinal laminated wood is at a relatively large distance from the longitudinal support seat on the side of the main hull, and the bending moment acting on it and the size requirements are also relatively large. The vertical and longitudinal loads are transmitted through different laminated woods, and the number of laminated woods used is relatively large, increasing the use cost. Therefore, the existing technologies have the following problems: 1. The layout space at the bottom of the rhombic independent fuel tank is small, and it is difficult to arrange the longitudinal support device; 2. The bearing capacity of the existing top support device of the rhombic independent fuel tank is weak and cannot be used at the bottom; 3. The number of laminated woods used in the existing support device of the rhombic independent fuel tank is relatively large, resulting in high costs. Summary of the Invention

[0003] The object of the present invention is to solve the technical problems existing in the prior art, namely, the insufficient layout space for the vertical support base and the longitudinal support device, and the relatively large number of laminated woods used.

[0004] To achieve the above object, the technical solution adopted by the present invention is to provide a multi-functional support device for a rhombic independent fuel tank. The multi-functional support device includes a main hull side support structure, a fuel tank side support structure, and laminated woods; the fuel tank side support structure includes a fuel tank side longitudinal partition along the length direction of the hull; fuel tank side longitudinal baffles are respectively provided at the front and rear ends of the fuel tank side longitudinal partition, and the main hull side support structure is provided with main hull side longitudinal baffles corresponding to the front and rear fuel tank side longitudinal baffles; a horizontal main hull side horizontal support panel is provided on the side of the main hull side longitudinal baffle close to the fuel tank side longitudinal partition, a fuel tank side horizontal support panel is provided in the fuel tank side support structure above the main hull side horizontal support panel, and laminated woods are provided between the main hull side horizontal support panel and the fuel tank side horizontal support panel, and the laminated woods are arranged between the fuel tank side longitudinal baffle and the main hull side longitudinal baffle.

[0005] Preferably, the main hull side support structure includes two front and rear support units, and the fuel tank side support structure is provided between the two support units.

[0006] Preferably, each support unit includes a main hull side longitudinal end knee plate, a main hull side longitudinal inner knee plate, a main hull side transverse knee plate, a main hull side horizontal support panel, and a main hull side longitudinal baffle; the main hull side longitudinal end knee plate and the main hull side longitudinal inner knee plate are successively vertically provided on the side of the support unit close to the fuel tank side support structure, a main hull side transverse knee plate is provided in the ship width direction between the main hull side longitudinal end knee plate and the main hull side longitudinal inner knee plate, a horizontal main hull side horizontal support panel is provided at the upper end of the main hull side transverse knee plate, and a main hull side longitudinal baffle is provided on the side of the main hull side horizontal support panel away from the fuel tank side support structure.

[0007] Preferably, the main hull side longitudinal baffle is perpendicular to the main hull side horizontal support panel.

[0008] Preferably, the fuel tank side support structure includes a fuel tank side longitudinal end knee plate, a fuel tank side longitudinal support plate, a fuel tank side transverse knee plate, a fuel tank side upper horizontal panel, a fuel tank side lower horizontal panel, and a fuel tank side longitudinal partition; a fuel tank side longitudinal support plate is vertically provided along the ship length direction below the fuel tank, fuel tank side longitudinal end knee plates are provided at the front and rear ends of the fuel tank side longitudinal support plate, and a fuel tank side transverse knee plate is vertically provided in the ship width direction between the fuel tank side longitudinal support plate and the fuel tank side longitudinal end knee plate; a horizontal fuel tank side upper horizontal panel is provided at the lower end of the fuel tank side longitudinal support plate, and the fuel tank side upper horizontal panel is connected to a horizontal fuel tank side lower horizontal panel through a vertical fuel tank side longitudinal partition.

[0009] Preferably, the length of the upper horizontal panel on the fuel tank side is greater than that of the lower horizontal panel on the fuel tank side. The parts of the front and rear ends of the upper horizontal panel on the fuel tank side that exceed the lower horizontal panel on the fuel tank side are provided as horizontal support panels on the fuel tank side.

[0010] Preferably, longitudinal baffles on the fuel tank side are vertically provided at the front and rear ends of the longitudinal partition on the fuel tank side along the ship width direction; the lower ends of the longitudinal baffles on the fuel tank side are connected to the front and rear ends of the lower horizontal panel on the fuel tank side.

[0011] Preferably, the horizontal support panel on the fuel tank side and the longitudinal baffle on the fuel tank side are perpendicular to each other; there is a gap between the laminated wood and the longitudinal baffle on the fuel tank side.

[0012] Preferably, a plurality of vertical triangular support plates on the main hull side along the ship length direction are provided between the horizontal support panel on the main hull side and the transverse bracket on the main hull side.

[0013] Preferably, a plurality of vertical triangular support plates on the fuel tank side along the ship length direction are provided between the horizontal support panel on the fuel tank side and the transverse bracket on the fuel tank side.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) It can be used at the bottom of the fuel tank, adding a longitudinal support function without increasing the load of other vertical support devices.

[0016] (2) Compared with the traditional multi-functional support structure, it has stronger bearing capacity and lighter structure.

[0017] (3) Compared with the traditional multi-functional support structure, it saves the quantity of laminated wood.

[0018] (4) This device is also applicable to the top of the fuel tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic layout diagram of a multi-functional support device for a rhombic independent fuel tank of the present invention;

[0020] Figure 2 It is a schematic longitudinal sectional view of a multi-functional support device for a rhombic independent fuel tank of the present invention;

[0021] Figure 3 It is a schematic longitudinal sectional view of the main hull side support of a multi-functional support device for a rhombic independent fuel tank of the present invention;

[0022] Figure 4 It is a schematic longitudinal sectional view of the fuel tank side support of a multi-functional support device for a rhombic independent fuel tank of the present invention;

[0023] Figure 5Schematic cross-section of a multi-functional support device for a rhombus independent fuel tank according to the present invention;

[0024] Figure 6 Schematic diagram of a vertical triangular support plate of a multi-functional support device for a rhombus independent fuel tank according to the present invention;

[0025] Reference numerals: 1. hull; 2. fuel tank; 3. multi-functional support device; 4. laminated wood; 5. conventional vertical support device; 31. main hull side support structure; 32. fuel tank side support structure; 311. main hull side longitudinal end gusset; 312. main hull side longitudinal inner gusset; 313. main hull side transverse gusset; 314. main hull side horizontal support panel; 315. main hull side longitudinal baffle; 316. main hull side vertical triangular support plate; 321. fuel tank side longitudinal end gusset; 322. fuel tank side longitudinal support plate; 323. fuel tank side transverse gusset; 324. fuel tank side horizontal support panel; 325. fuel tank side longitudinal baffle; 326. fuel tank side upper horizontal panel; 327. fuel tank side lower horizontal panel; 328. fuel tank side longitudinal partition; 329. fuel tank side vertical triangular support plate. Detailed implementation manners

[0026] To make the present invention more obvious and understandable, preferred embodiments are provided below in conjunction with the accompanying drawings for detailed description as follows:

[0027] As Figure 1-6As shown in the figure, the technical solution adopted by the present invention is to provide a multi-functional support device 3 for a rhombic independent fuel tank. A multi-functional support device 3 and a conventional vertical support device 5 are provided between the fuel tank 2 and the hull 1. The multi-functional support device 3 includes a main hull side support structure 31, a fuel tank side support structure 32, and laminated wood 4. The fuel tank side support structure 32 includes a fuel tank side longitudinal partition 328 along the length direction of the hull. Fuel tank side longitudinal baffles 325 are provided at the front and rear ends of the fuel tank side longitudinal partition 328, and the main hull side support structure 31 is provided with main hull side longitudinal baffles 315 corresponding to the front and rear fuel tank side longitudinal baffles 325. A horizontal main hull side horizontal support panel 314 is provided on the side of the main hull side longitudinal baffle 315 close to the fuel tank side longitudinal partition 328. A fuel tank side horizontal support panel 324 is provided in the fuel tank side support structure 32 above the main hull side horizontal support panel 314. Laminated wood 4 is provided between the main hull side horizontal support panel 314 and the fuel tank side horizontal support panel 324, and the laminated wood 4 is provided between the fuel tank side longitudinal baffle 325 and the main hull side longitudinal baffle 315. The main hull side support structure 31 includes two front and rear support units, and the fuel tank side support structure 32 is provided between the two support units. Each support unit includes a main hull side longitudinal end knee plate 311, a main hull side longitudinal inner knee plate 312, a main hull side transverse knee plate 313, a main hull side horizontal support panel 314, and a main hull side longitudinal baffle 315. The main hull side longitudinal end knee plate 311 and the main hull side longitudinal inner knee plate 312 are vertically arranged in sequence on the side of the support unit close to the fuel tank side support structure 32. A main hull side transverse knee plate 313 is arranged in the ship width direction between the main hull side longitudinal end knee plate 311 and the main hull side longitudinal inner knee plate 312. A horizontal main hull side horizontal support panel 314 is provided at the upper end of the main hull side transverse knee plate 313, and a main hull side longitudinal baffle 315 is provided on the side of the main hull side horizontal support panel 314 away from the fuel tank side support structure 32. The main hull side longitudinal baffle 315 is perpendicular to the main hull side horizontal support panel 314. The fuel tank side support structure 32 includes a fuel tank side longitudinal end knee plate 321, a fuel tank side longitudinal support plate 322, a fuel tank side transverse knee plate 323, a fuel tank side upper horizontal panel 326, a fuel tank side lower horizontal panel 327, and a fuel tank side longitudinal partition 328. A fuel tank side longitudinal support plate 322 is vertically arranged along the ship length direction below the fuel tank 2. Fuel tank side longitudinal end knee plates 321 are provided at the front and rear ends of the fuel tank side longitudinal support plate 322. A fuel tank side transverse knee plate 323 is vertically arranged in the ship width direction between the fuel tank side longitudinal support plate 322 and the fuel tank side longitudinal end knee plate 321. A horizontal fuel tank side upper horizontal panel 326 is provided at the lower end of the fuel tank side longitudinal support plate 322, and the fuel tank side upper horizontal panel 326 is connected to the horizontal fuel tank side lower horizontal panel 327 through a vertical fuel tank side longitudinal partition 328.The length of the upper horizontal panel 326 on the fuel tank side is greater than that of the lower horizontal panel 327 on the fuel tank side. The parts of the front and rear ends of the upper horizontal panel 326 on the fuel tank side that exceed the lower horizontal panel 327 on the fuel tank side are set as the horizontal support panels 324 on the fuel tank side. Longitudinal baffles 325 are vertically provided at the front and rear ends of the longitudinal partition 328 on the fuel tank side in the ship width direction; the lower ends of the longitudinal baffles 325 on the fuel tank side are connected to the front and rear ends of the lower horizontal panel 327 on the fuel tank side. The horizontal support panel 324 on the fuel tank side and the longitudinal baffle 325 on the fuel tank side are perpendicular to each other; there is a gap between the laminated wood 4 and the longitudinal baffle 325 on the fuel tank side. Between the horizontal support panel 314 on the main hull side and the transverse bracket 313 on the main hull side, there are multiple vertical triangular support plates 316 on the main hull side with their plate surfaces along the ship length direction. Between the horizontal support panel 324 on the fuel tank side and the transverse bracket 323 on the fuel tank side, there are multiple vertical triangular support plates 329 on the fuel tank side with their plate surfaces along the ship length direction.

[0028] The present invention aims at the problems existing in the prior art and provides a multi-functional support device 3 for the bottom of a rhombic independent fuel tank. This device can bear large longitudinal and vertical loads simultaneously. By integrating the functions of the longitudinal and vertical support devices and using a laminated wood to transmit vertical and longitudinal loads at the same time, the problem of insufficient layout space in the prior art can be solved, and the stress on other vertical support devices is not increased.

[0029] The multi-functional support device 3 structure provided by the present invention is symmetrically arranged on the starboard and port sides and is divided into a main hull side support structure 31 and a fuel tank side support structure 32. The two-side support structures realize the transmission of vertical and longitudinal loads through surface contact with the laminated wood 4.

[0030] The longitudinal brackets on both sides of the main hull and the fuel tank of the support device are respectively aligned with the longitudinal girder structures on both sides of the main hull and the fuel tank; the transverse brackets on both sides of the main hull and the fuel tank of the support device are respectively aligned with the transverse strong frame structures on both sides of the main hull and the fuel tank. The longitudinal and transverse brackets of the support device are both enlarged and treated with soft toes, and the panels at both ends of the longitudinal end brackets on the hull side are beveled at both ends.

[0031] The laminated wood 4 is placed horizontally along the transverse direction in the length direction. The upper and lower surfaces of the laminated wood are respectively aligned and closely attached to the horizontal support panels on the main hull side and the fuel tank side. The front and rear surfaces of the laminated wood are aligned and closely attached to the longitudinal baffle 315 on the main hull side, and are aligned with the longitudinal baffle 325 on the fuel tank side with a gap of 5-10 mm.

[0032] Embodiment

[0033] As Figure 1As shown in the figure, the present invention provides a multi-functional support device 3 for a rhombus independent fuel tank. The device is installed between the main hull 1 and the fuel tank 2, and is symmetrically arranged on the port and starboard sides of the main hull. The main hull 1 provides vertical and longitudinal support for the fuel tank 2 through the support device 3.

[0034] As Figure 2 shown in the figure, the device 3 includes a main hull side support structure 31, a fuel tank side support structure 32, and a laminated wood 4 connecting the two side structures. The device 3 can transmit vertical loads and longitudinal loads simultaneously. In contrast, a conventional vertical support device 5 can only transmit vertical loads.

[0035] As Figure 3 , Figure 4 and Figure 5 shown in the figure, the longitudinal end bracket 311 on the main hull side, the longitudinal inner bracket 312 on the main hull side are aligned with the main hull longitudinal girder structure, the longitudinal end bracket 321 on the fuel tank side, the longitudinal support plate 322 on the fuel tank side are aligned with the fuel tank longitudinal girder structure. The transverse bracket 313 on the main hull side is aligned with the main hull transverse strong frame structure, and the transverse bracket 323 on the fuel tank side is aligned with the fuel tank transverse strong frame structure. The above longitudinal brackets 311, 312, 321 and transverse brackets 313, 323 are all enlarged and treated with soft toes to reduce their stress concentration and improve fatigue strength. The panel with beveled ends can also be set on the longitudinal end bracket 311 on the hull side.

[0036] The vertical load is transmitted by the main hull side horizontal support panel 314 and the fuel tank side horizontal support panel 324 through the upper and lower surfaces of the laminated wood 4. The longitudinal load is transmitted by the main hull side longitudinal baffle 315 and the fuel tank side longitudinal baffle 325 through the front and rear surfaces of the laminated wood 4 in contact. The laminated wood 4 is placed horizontally along the transverse direction in the length direction. The upper and lower surfaces of the laminated wood 4 are respectively aligned and closely attached to the main hull side horizontal support panel 314 and the fuel tank side horizontal support panel 324. The front and rear surfaces of the laminated wood 4 are aligned with the main hull side longitudinal baffle 315 and the fuel tank side longitudinal baffle 325, and are closely attached to the main hull side longitudinal baffle 315, leaving a gap of 5 - 10 mm with the fuel tank side longitudinal baffle 325. This gap can leave a construction space for the fuel tank hoisting, and at the same time release the longitudinal stress generated by the inconsistent relative deformation of the main hull 1 and the fuel tank 2 during operation. When the fuel tank 2 generates a longitudinal acceleration, it slides longitudinally relative to the main hull 1, and this gap disappears, and the fuel tank side longitudinal baffle 325 is closely attached to the laminated wood 4, thereby transmitting the longitudinal load. The main hull side horizontal support panel 314 is perpendicular to the main hull side longitudinal baffle 315, and the fuel tank side horizontal support panel 324 is perpendicular to the fuel tank side longitudinal baffle 325, so that the vertical and longitudinal support effects on the laminated wood 4 are the best.

[0037] As Figure 6As shown in the figure, the main hull side horizontal support panel 314 is provided with a plurality of main hull side vertical triangular support plates 316, and the fuel tank side horizontal support panel 324 is also provided with a plurality of fuel tank side vertical triangular support plates 329. The above-mentioned triangular plates can improve the strength and stiffness of the horizontal support panels on the hull side and the fuel tank side, and provide better support for the laminated wood 4.

[0038] As described above, the above are only the preferred embodiments of the present invention, and there is no limitation in any form and substance to the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the premise of the present invention, several improvements and supplements can still be made, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any equivalent changes made by those skilled in the art who are familiar with this specialty without departing from the spirit and scope of the present invention by using the technical content disclosed above, all belong to the equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments according to the essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multifunctional support device for a rhombic independent fuel tank. There is a multifunctional support device between the fuel tank and the hull, characterized in that The multifunctional support device includes a main hull side support structure, a fuel tank side support structure, and laminated wood; the fuel tank side support structure includes a fuel tank side longitudinal partition along the length direction of the hull; fuel tank side longitudinal baffles are respectively arranged at the front and rear ends of the fuel tank side longitudinal partition, and the main hull side support structure is provided with main hull side longitudinal baffles corresponding to the front and rear fuel tank side longitudinal baffles; a horizontal main hull side horizontal support panel is arranged on the side of the main hull side longitudinal baffle close to the fuel tank side longitudinal partition, a fuel tank side horizontal support panel is arranged in the fuel tank side support structure above the main hull side horizontal support panel, laminated wood is arranged between the main hull side horizontal support panel and the fuel tank side horizontal support panel, and the laminated wood is arranged between the fuel tank side longitudinal baffle and the main hull side longitudinal baffle; The main hull side support structure includes two front and rear support units, and the fuel tank side support structure is arranged between the two support units; each support unit includes a main hull side longitudinal end knee plate, a main hull side longitudinal inner knee plate, a main hull side transverse knee plate, a main hull side horizontal support panel, and a main hull side longitudinal baffle; the main hull side longitudinal end knee plate and the main hull side longitudinal inner knee plate are successively and vertically arranged on the side of the support unit close to the fuel tank side support structure, a main hull side transverse knee plate is arranged in the ship width direction between the main hull side longitudinal end knee plate and the main hull side longitudinal inner knee plate, a horizontal main hull side horizontal support panel is arranged at the upper end of the main hull side transverse knee plate, and a main hull side longitudinal baffle is arranged on the side of the main hull side horizontal support panel away from the fuel tank side support structure; The fuel tank side support structure includes a fuel tank side longitudinal end knee plate, a fuel tank side longitudinal support plate, a fuel tank side transverse knee plate, a fuel tank side upper horizontal panel, a fuel tank side lower horizontal panel, and a fuel tank side longitudinal partition; a fuel tank side longitudinal support plate is vertically arranged along the ship length direction below the fuel tank, fuel tank side longitudinal end knee plates are arranged at the front and rear ends of the fuel tank side longitudinal support plate, and a fuel tank side transverse knee plate is vertically arranged in the ship width direction between the fuel tank side longitudinal support plate and the fuel tank side longitudinal end knee plate; a horizontal fuel tank side upper horizontal panel is arranged at the lower end of the fuel tank side longitudinal support plate, and the fuel tank side upper horizontal panel is connected to the horizontal fuel tank side lower horizontal panel through a vertical fuel tank side longitudinal partition.

2. The multi-functional support device for a rhombic independent fuel tank according to claim 1, characterized in that, The main hull side longitudinal baffle is perpendicular to the main hull side horizontal support panel.

3. The multi-functional support device for a rhombic independent fuel tank as described in claim 2, characterized in that, The length of the fuel tank side upper horizontal panel is greater than that of the fuel tank side lower horizontal panel, and the parts of the fuel tank side upper horizontal panel exceeding the fuel tank side lower horizontal panel at the front and rear ends are set as fuel tank side horizontal support panels.

4. The multifunctional support device for a rhombic independent fuel tank according to claim 3, characterized in that, Fuel tank side longitudinal baffles are vertically arranged in the ship width direction at the front and rear ends of the fuel tank side longitudinal partition; the lower ends of the fuel tank side longitudinal baffles are connected to the front and rear ends of the fuel tank side lower horizontal panel.

5. The multifunctional support device for a rhombic independent fuel tank according to claim 4, characterized in that, The fuel tank side horizontal support panel is perpendicular to the fuel tank side longitudinal baffle; there is a gap between the laminated wood and the fuel tank side longitudinal baffle.

6. The multifunctional support device for a rhombic independent fuel tank according to claim 5, characterized in that, Multiple main hull side vertical triangular support plates along the ship length direction are arranged between the main hull side horizontal support panel and the main hull side transverse knee plate.

7. The multi-functional support device for a rhombic independent fuel tank according to claim 5, characterized in that, Multiple fuel tank side vertical triangular support plates along the ship length direction are arranged between the fuel tank side horizontal support panel and the fuel tank side transverse knee plate.

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