JPS584798Y2 - Spherical tank support device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a support device for a spherical tank.

For example, in low-temperature liquefied gas carriers, a support ring is installed around the equator of a spherical tank that stores liquefied gas.
A support deck is formed around the hold below the support ring, and support stands are interposed at appropriate circumferential intervals between the support deck and the support ring to support the spherical tank. .

By the way, conventionally, the above-mentioned support stand is made by welding plates one by one to form a frame body, and further welding pressure-resistant and heat-insulating support materials to both sides and bottom of the frame body, and furthermore, the top surface of the frame body is attached to the frame body. It is welded to the bottom of the lower ring plate that makes up the support ring.

Therefore, it takes a lot of time and skill to form this support, and the workability is poor.

The present invention provides a support device for a spherical tank that eliminates such drawbacks.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a structure in which a spherical tank 2 is mounted within a hull 1, and this spherical tank 2 is provided with a heat shielding device.

Reference numeral 3 denotes a support ring, which is arranged between two ring plates 4 and 5 arranged vertically and parallel to each other near and below the equator of the spherical tank 2, and between the two ring plates 4 and 5. It consists of a stiffener 6.

7 is a support deck formed around the hold below the support ring 3; 8 is a support platform interposed between the support deck 7 and the support ring 3 at regular intervals in the circumferential direction; 9 is an upper deck; be.

As shown in FIGS. 2 and 3, the support base 8 is mainly composed of a metal block 10 that is integrally formed by casting, and for example, in the circumferential direction of the upper plate 11, the lower plate 12, and the support ring 3. It is composed of corresponding side plates 13 and a partition plate 14 that reinforces these, and the lower plate 12 has, for example, hard rubber holes or A pressure-resistant and heat-insulating support material 16 made of hard resin or the like is provided, and a pressure-resistant and heat-insulating support material 18 similar to that described above is fixed to the side plates 13 by holding portions 17 extending laterally from the side plates 13. In addition, the width a in the circumferential direction of the support ring of the lower pressure-resistant heat insulating support member 16 is set to the maximum width required for load support, and the width a in the circumferential direction of the support ring of the block material 10, that is, the width 7 between the side plates 13 is The width is equal to or approximately equal to the width a of the pressure-resistant heat insulating support member 16.

As a result, there is no possibility that an eccentric load will be applied to the side plate 13 of the block material 10, and only the load of the axial force will be applied, so that the strength of the cast material can be effectively utilized.

The upper surface of the upper plate 11 of the block material 10 is the support ring 3
are arranged at regular intervals in the circumferential direction of the support ring 3 in contact with the lower surface of the lower ring plate 5 , and the upper plate 11 is bolted 19 to the lower ring plate 5 in the inner space of the block member 10 .

If necessary, a pressure-resistant liner may be inserted between the upper plate 11 of the block material and the lower ring plate 50, and the periphery of the upper plate 110 of the block material may be welded to the lower surface of the lower ring plate 5 if necessary. You can.

Reference numeral 20 denotes a bracket fixed on the support deck 7, which contacts the pressure-resistant and heat-insulating supports 18 of the side plates 13 of the support base 8, and allows the support base 8 to move only in the tank radial direction. This allows the spherical tank 2 to expand and contract.

As described above, according to the present invention, the width of the block material is made equal to, or almost equal to, the width of the pressure-insulating support material fixed to the lower plate of the block material, so that no eccentric load is applied to the side plate of the block material. Since the load is only the axial force, the strength of the cast material can be effectively utilized.

Further, by reducing the width of the pressure-resistant and heat-insulating support material to the minimum necessary for supporting the load, the width of the block material can be reduced, and the space between the support stands can be widened, and workability can be improved accordingly.

Furthermore, precision control can be improved by making the block material lighter and smaller.

Also, since the block material and support ring are connected by bolts,
The installation work is easy, and the structure of the block material is also easy.

In addition, pressure-resistant heat insulating material is fixed to the holding parts protruding from the lower plate periphery and both side plates of the metal block, and the block material and upper plate are connected to the support ring with bolts, so the entire support base is It is not an expensive product that has a pressure-resistant and heat-insulating support material applied to it, so it is possible to save on material costs.

Furthermore, since the pressure-resistant and heat-insulating support material is fixed to the metal block side, heat insulation is also provided around the metal block.

[Brief explanation of the drawing]

FIG. 1 is an overall cross-sectional front view, FIG. 2 is a partial cross-sectional front view of essential parts showing an embodiment of the present invention, and FIG. 3 is a side view thereof. 2... Spherical tank, 3... Support ring, 8... Support stand, 10... Block material, 11-... Top plate, 12...
・Lower plate, 13... Side plate, 16... Pressure-resistant insulation support material,
19... Bolt connection, a... Width of the pressure-resistant heat insulating support material 16, b... Width of the block material 10.

Claims (1)

[Scope of utility model registration request] In a support device that supports the spherical tank by support stands arranged at appropriate intervals in the circumferential direction of a support ring provided around the equator of the spherical tank, the support stand is mainly made of a metal block material integrally formed by casting. The width of the block material is equal to or almost equal to the width of the pressure-resistant and heat-insulating support material fixed to the holding part protruding from the periphery of the lower plate of the block material. A spherical tank support device, characterized in that a pressure-resistant and heat-insulating support member is fixed to a holding portion protruding from the support ring, and a block upper plate is connected to the support ring by bolts.