RU2410281C1 - Device to rule out cargo displacement in hold and maintain ship floatability - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: proposed device comprises folded flexible envelopments made from airtight material and secured, all along the hold length, to deck and sides. Said envelopments are communicated with valves and accessories to the ship compressed air system.

EFFECT: ship floatability, reliable operation.

4 dwg

Description

The invention relates to the field of shipbuilding and allows to prevent the displacement of cargo in the hold and maintain the buoyancy of the vessel.

Known vessel for the transport of bulk goods by AS su No. 1318481 (1987 publication), containing underdeck and zygomatic bulkheads in the form of pneumatic blocks made of gas-tight material, connected to a compressed air system with control valves.

The disadvantage of this invention is the complexity of the design of the bulkheads, as well as the need to use a ballast-drainage system of the vessel.

Closest to the claimed is a device to prevent the displacement of packaged and bulk cargo in the hold of the vessel by AS su No. 1763285 (1992 publication), comprising a flooring in the ship’s hold made of sections hinged to the deck and sides of the panels made of soft and rigid panels alternating along the entire length of the hold of the vessel, as well as nodes for holding the sections to the free surface of the cargo in the form of power hydraulic cylinders.

The disadvantage of this invention is the metal consumption, the complexity of the design and the high cost of manufacturing panels, hinges, hydraulic cylinders and their installation in the hold of the vessel.

The technical task is to simplify the design, reduce cost, reliability, as well as maintaining the buoyancy of the vessel in an accident.

The technical result of the claimed device is to increase reliability in operation. It is achieved by the fact that along the entire length of the hold of the vessel, flexible shells of airtight material, which are folded in the form of packets, are attached to the deck and sides, which are connected to the ship’s compressed air system through shutoff valves.

The invention is illustrated by drawings.

Figure 1 shows a General view of the device;

On figa - the operation of the device when filling the hold with a small amount of bulk cargo;

On figb - the operation of the device when the cargo is completely filled with bulk cargo;

On figa - the operation of the device with a partial filling of the hold with bulk cargo;

On figb - the operation of the device in order to preserve the buoyancy of the vessel in the presence of holes in the side of the vessel;

Figure 4 is a view along arrow A in figure 2A.

A device for preventing the displacement of cargo 1 in the hold 2 and the preservation of the buoyancy of the vessel 3 contains deck and side packages 4 and 5 with flexible shells 6 and the pipes of the ship compressed air system 7 with shutoff valves 8 brought to them.

The device operates as follows:

Compressed air through the pipes of the ship’s compressed air system 7 and shutoff valves 8 fills the flexible shells of the deck and side packages 4 and 5, they are lowered onto the pre-aligned bulk cargo 1 (or other types of cargo that are stacked flat) and press it tightly, preventing it from moving in the hold 2.

Depending on the degree of loading of the vessel’s hold, the following device operation options are possible:

Option 1 (figa). Hold 2 is filled with a small amount of cargo 1. In this case, the load occupies the lower part of the hold. In this case, the load is pressed by the flexible shells 6 of only the on-board packages 5.

Option II (figb). Hold 2 is fully loaded. In this case, the load 1 is pressed by the flexible shells 6 only deck packages 4, preventing the movement of cargo in the deck.

Option III (figa). The hold 2 is partially filled with cargo 1. In this case, cargo 1 is pressed by flexible shells 6 of both deck and side packages 4 and 5.

Option IV (figb). In the case of formation of a hole 9 in the hull of vessel 3, to prevent flooding of the hold 2 overboard water, flexible shells 6 of deck and side packages 4 and 5 are filled with compressed air through the pipes of the ship’s compressed air system 7 and shutoff valves 8, which helps to reduce the intensity of outboard water in hold 2 and maintains the buoyancy of vessel 3 in an accident.

The flexible shells are returned to their original state by bleeding air from them, drying and folding in the form of deck and airborne packages, again ready for use.

The positive effect is that the use of this device does not require special, expensive equipment, a conventional air compressor, which is available on any vessel, and simple modernization of holds, which allows the effective use of this device to ensure the survivability of the vessel.

Claims (1)

Device for preventing cargo displacement in the hold and maintaining the buoyancy of the vessel, characterized in that along the entire length of the hold of the vessel to the deck and sides are attached folded in the form of packages flexible shells of airtight material that are connected through shut-off valves to the ship's compressed air system.

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