RU2555078C2 - Lifeboat of free-fall for emergency evacuation of personnel from offshore facilities in ice conditions - Google Patents

Abstract

FIELD: rescue equipment.

SUBSTANCE: lifeboat of free-fall has a housing of fire-resistant material. The shock-absorbing system of reduction of impact loads is made in the form of a shock-absorbing cushion arranged in the housing of the boat in the area of its bottom. The boat is equipped on the boards with jet nozzle-movers. In the housing or on the housing of the boat the high-pressure cylinders are mounted, connected with the nozzle-movers through pipelines with controlled valves. In the boat the seat means for personnel are provided. The material of the housing can be used as polyether fiberglass filled with foamed polyurethane. The shock-absorbing cushion may be made of reinforced rubber with air cavities.

EFFECT: contact of boat with ice, safe for personal, when its dropping from offshore facilities and its independent movement on ice to escape the danger zone.

4 cl, 1 dwg

Description

The invention relates to the field of shipbuilding, in particular to floating rescue equipment - boats and rafts, and relates to the issue of ensuring the evacuation and rescue of personnel of marine facilities in extreme cases, as well as crews of ships operating in the Arctic and Far Eastern freezing seas.

Known resettable lifeboat (RF patent for the invention No. 208943 of 09/10/1997, "Resettable lifeboat"), comprising a housing made with impermeable modules, each of which has two hinges in the lower part, by means of which it is installed in the housing with the possibility swing around the axes of these hinges, with each module, with the exception of the bow, is equipped with autonomous ventilation, lighting and internal radio communication systems, as well as with carrier and safety cables fixed to the housing, fixedly connected E with the upper parts of said modules. This technical solution is taken as a prototype.

However, it is not possible to use the well-known free fall boat taking into account ice conditions, due to the fact that it:

- designed to evacuate and save people only in clean water;

- does not have a shock-absorbing device that ensures the safety of personnel in contact with ice;

- Does not have the ability to independently move with personnel on ice, after contact with ice.

The objective of the invention is the creation of a life-saving tool for emergency evacuation of personnel from offshore facilities in ice conditions, ensuring safe contact with ice when it is dumped with personnel of the offshore facility and its further independent movement on ice to leave the danger zone in arctic conditions.

The problem is solved due to the fact that in the free fall rescue boat for emergency evacuation of personnel from offshore facilities in ice conditions, containing a hull and a shock-absorbing system for reducing shock loads, the hull is made of fire-resistant material, and the shock-absorbing system for reducing shock loads is made in the form located on the bottom of the boat cushioning pad.

The boat is also equipped with onboard mounted jet propulsion nozzles and high-pressure cylinders located in / on the boat's hull, connected with pipelines to the nozzle-propulsors via controlled valves.

As the material of the hull of the lifeboat used polyester fiberglass with a filling of foamed polyurethane.

At the same time, the shock-absorbing pillow is made of reinforced rubber with air cavities.

Moreover, the lifeboat is equipped with boarding equipment for personnel.

The implementation of the hull of a fire-resistant material, which can be used as reinforced polyester fiberglass with a filler made of foamed polyurethane, provides it with the necessary strength when the boat falls with personnel from a height after it is dropped from a marine object, as well as the fire resistance of the boat in case of a fire at sea object.

Equipping the lifeboat with a bottom shock-absorbing pad of reinforced rubber with air cavities makes it possible to mitigate the impact on the ice field when the boat falls with personnel and thereby ensure the safety of personnel.

High-pressure cylinders with compressed air and two outboard mounted propulsion nozzles, connected by pipelines to high-pressure cylinders through controlled valves, allow the lifeboat to independently move from the place it fell onto the ice and leave the danger zone together with personnel.

The invention is illustrated in the figure, which shows the proposed lifeboat (cross section of the hull along the diametrical plane of the boat (with a cutout in the stern)).

The free fall lifeboat for emergency evacuation of personnel from offshore facilities in ice conditions has a sturdy hull 1 made of fire-resistant material, which is reinforced polyester fiberglass with a filler 2 made of foamed polyurethane. On the bottom of the boat there is a shock-absorbing cushion 3 made of reinforced rubber with air cavities 4, designed to reduce the impact force when in contact with ice after dropping it with personnel from a marine object. The lifeboat is equipped with high-pressure cylinders with compressed air 5 located in / on the hull 1 and mounted on the hull by jet propulsion nozzles 6, which ensure the movement of the boat with personnel after it is discharged from the marine object. The connection of the cylinders 5 with jet propulsion nozzles 6 is carried out by pipelines 7 through controlled valves 8.

Emergency evacuation of personnel from offshore facilities using the proposed free fall rescue boat is as follows.

The lifeboat is dropped by a free fall method from an offshore facility together with personnel placed on it in ice conditions and due to the shock-absorbing cushion 3 made of reinforced rubber with air cavities 4 ensures the safety of passengers in the fall. After dumping and contact with ice, jet propulsion nozzles 6 connected to high-pressure cylinders 5 are turned on by means of controlled valves 8, and a boat with personnel leaves the danger zone. The cessation of the movement of the lifeboat is carried out by closing the controlled gate valves 8.

In the hull of the boat placed landing means 9 for personnel.

The proposed free fall boat allows for emergency evacuation and rescue of personnel and crews from offshore facilities in ice conditions, with further movement of the lifeboat with personnel on ice to leave the danger zone, which compares favorably with the prototype.

Claims (4)

1. A free fall lifeboat for emergency evacuation of personnel from offshore facilities in ice conditions, comprising a hull and a shock-absorbing system for reducing shock loads, characterized in that the hull is made of fire-resistant material, and the shock-absorbing system for reducing shock loads is made in the form of a shock-absorbing pad located in the hull of the boat in the area of its bottom, while the boat is equipped with onboard mounted jet propulsion nozzles and high or low cylinders located in or on the hull of the boat phenomena associated with propulsion nozzles via pipelines with controlled valves. 2. The lifeboat according to claim 1, characterized in that a reinforced polyester fiberglass with a filling of foamed polyurethane is used as the fireproof material of the boat hull. 3. The lifeboat according to claim 1, characterized in that the shock-absorbing pillow is made of reinforced rubber with air cavities. 4. The lifeboat according to claim 1, characterized in that it is equipped with landing means for personnel.