RU2392022C2 - Method to fight forest fires and fires in high buildings using helicopters - Google Patents

Abstract

FIELD: fire fighting.

SUBSTANCE: to add to efficiency of fire fighting, one or several helicopters are used. Said helicopters are communicated by flexible fire agent feed hoses. Note that, to avoid winding of said hoses on helicopter rotor and blades, tube with holes to feed said hose is secured onto any fixed part of helicopter. Note also that said tube has length exceeding that of helicopter proper and that of blades, while rotator with blades is enclosed in reticulated to be secured on helicopter fixed part. If required, all helicopter can be enclosed in said reticulated structure.

EFFECT: higher efficiency of fire fighting.

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Description

The invention relates to methods for extinguishing forest fires and fires in high-rise buildings using helicopters.

A known method of extinguishing fires in high-rise buildings using a helicopter (US patent No. 5.135.055, MKI A62C 27/00, publ. 04.08.1992). This method includes refueling the helicopter with an on-board supply of liquid extinguishing agent of the same composition, approaching a high-rise building, maneuvering the building at the required height, destroying window panes in the building and supplying horizontally extinguishing substance to the formed window openings.

The disadvantages of this method include the following: in the known method, horizontal liquid is supplied to the source of ignition and vertical is not supplied — thus, it is not possible to extinguish fires at the bottom of the helicopter. Moreover, the quenching area is limited.

Known helicopter (US Pat. RF 2152891, IPC V64C 27/04, 10.06.2000). The helicopter contains a housing with an engine, a screw with blades and a sleeve, a support device for landing, while the screw is enclosed in a mesh box covering it, which is fixed with a lower surface on the housing.

The disadvantages of the known technical solution is that this technical solution is not intended to extinguish fires.

The closest technical solution is the method of extinguishing fires in high-rise buildings using a helicopter (US Pat. RF 2288760, IPC A62C 3/00).

A disadvantage of the known technical solution is that the known method does not allow to effectively extinguish a fire of different classification on a large object.

The technical problem solved in the claimed method is to increase the efficiency in buildings and in the area of extinguishing fires (including steppe and forest) using helicopters connected by a flexible hose. The technical result of the claimed method - extinguishing fires on vertical and horizontal surfaces - is achieved using a helicopter system connected by flexible hoses, while the helicopter blades are protected by a mesh structure.

In the method of extinguishing forest fires and fires in high-rise buildings using helicopters, including refueling a helicopter with an on-board supply of extinguishing agent, approaching the extinguishing object and supplying the extinguishing agent horizontally and downward, according to the invention, the fire is extinguished using one or a system of (several) helicopters connected between each other with flexible hoses, in order to avoid winding the hose onto the screw and helicopter blades on any fixed part of the helicopter, a pipe with holes is attached, while the pipe is made longer than the helicopter itself and the length of the helicopter blades, while the screw with the helicopter blades is enclosed in a mesh structure, which is mounted on the fixed part of the helicopter, if necessary, the entire helicopter can be completely enclosed in a mesh structure.

Figure 1 shows the General scheme of extinguishing a fire. 1 - the bottom hole of the pipe; 2 - the rear hole of the pipe; 3 - front hole of the pipe; 4 - stream splitter; 5 - a flexible hose; 6 - hose with a sprinkler of the leading helicopter; 7 - the fixed part of the helicopter, to which the mesh structure is attached; 8 - leading helicopter; 9 - a pipe; 10 - hose for the supply of extinguishing agent; 11 - the rupture of the flexible hose for connection with another helicopter; 12 - sprayers of another helicopter; 13 - connection node of several sprinklers.

Figure 2 shows a diagram of a helicopter, fully protected by a mesh structure.

The claimed method of extinguishing a fire using a helicopter includes refueling the helicopter with an on-board supply of extinguishing agent, approaching the extinguishing object and supplying the extinguishing agent horizontally or vertically.

In the proposed method of extinguishing forest fires and fires in high-rise buildings using helicopters, the problem of increasing the efficiency of the methods for supplying and spraying fire extinguishing substances using a helicopter system interconnected by flexible hoses is solved. The system may include several helicopters. The helicopter rotor and blades are enclosed in a mesh structure 13, which is mounted on any fixed part of the helicopter 7. In order to avoid collisions between helicopters and power lines on any fixed part of the helicopter, a rigid grid structure of any electrically non-conductive solid material is attached to protect the screw and blades (13). Thus, the grid protects the helicopter blades from all sides and the hoses from the blades of other helicopters and power lines.

Also, in order to avoid winding the hose onto the helicopter screw, a pipe 9 with holes 1, 2, 3 is attached to any lower stationary part of the helicopter, while the pipe 9 should be longer than the length of the helicopter itself and the length of the blades to avoid touching the hose with the helicopter blades and rotate freely.

On the pipe 9 there is a system of holes for supplying a hose. The hose to the lead helicopter 8 is fed into any of the holes (1, 2, 3) on the pipe 9 and is fixed non-rigidly inside the pipe. This allows other helicopters to perform 8 maneuvers independent of the main helicopter in the air. In this case, the hose slides freely along the pipe (the hose moves freely inside the pipe 9). The most effective is the flow through the hose 5 of liquid into the hole 2 behind the pipe 9 - since the hose is practically not blocked at all. The leading helicopter 8 does not fly away far from the power plant below, for example a fire engine. The main task of the leading helicopter is to hold the extinguishing agent supply hoses and feed them through the flexible hoses to other helicopters, further from the source of ignition, and to keep the hoses on the fly, approximately at the level of other helicopters. However, using a simple stream splitter 4, the leading helicopter 8 can also participate in extinguishing the fire through the device 12. At the same time, through the gap 11 using hoses, you can connect, arrange any number (2, 3, 4 ...) of helicopters to extinguish fires and fires - the quantity is limited only by the technical capabilities of the power plants for the efficient supply of fluid.

Hose 11 delivers fluid to the next helicopter. And this helicopter through the hose 6 delivers extinguishing fluid through the system of distributors 12 to the fire sources.

It is also possible to install a protective mesh structure on the entire helicopter, while the mesh structure is mounted on the fixed parts of the helicopter (figure 2).

The proposed method improves the efficiency of extinguishing forest fires and fires in high-rise buildings using helicopters connected by a flexible hose.

Claims (1)

A method for extinguishing forest fires and fires in high-rise buildings using helicopters, including refueling a helicopter with an on-board supply of extinguishing agent, approaching the extinguishing object and supplying the extinguishing agent horizontally and downward, characterized in that the fire is extinguished using one or a system of helicopters interconnected flexible hoses for the supply of extinguishing agent, while in order to avoid winding the hose for supplying the extinguishing agent to the screw and blades of the helicopter on any fixed part of the helicopter a pipe with holes for supplying a hose, the pipe being made longer than the helicopter itself and the length of the helicopter blades, and the screw with the helicopter blades or the entire helicopter is enclosed in a mesh structure that is mounted on the fixed part of the helicopter.

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