Helicopter fire extinguishing device

Abstract

The invention relates to the technical field of forest fire control, in particular to a helicopter fire extinguishing device. The helicopter fire extinguishing device comprises a bucket, a solid powder conveying system, a fire extinguishing agent dissolving container and a water pumping system, wherein the bucket is suspended on a helicopter; the fire extinguishing agent dissolving container surrounds the outer wall of the bucket; the solid powder conveying system is used for conveying fire extinguishing agent raw material solid powder in a helicopter inner cabin into the fire extinguishing agent dissolving container; the water pumping system is used for pumping water in the bucket into the fire extinguishing agent dissolving container; and the fire extinguishing agent dissolving container is used for dissolving the fire extinguishing agent raw material solid powder to form a liquid fire extinguishing agent and conveying the liquid fire extinguishing agent into the bucket. According to the helicopter fire extinguishing device provided by the invention, the fire extinguishing agent dissolving container is arranged around the outer wall of the bucket, and an aqueous solution and the liquid fire extinguishing agent do not need to flow through the helicopter inner cabin, so that the safety risk caused by leakage of the aqueous solution or the liquid fire extinguishing agent is avoided; and the gravity center distribution of the helicopter is not changed, so that the flight safety and the flight stability of the helicopter are ensured.

Description

technical field [0001] The invention relates to the technical field of mountain fire prevention and control, in particular to a helicopter fire extinguishing device. Background technique [0002] The use of helicopters to extinguish fires is an important way to extinguish forest fires. Helicopters fly fast, and the air flight is not restricted by road traffic conditions, so it can extinguish fires in a more timely manner. However, helicopters often need to carry water and fire extinguishing agents to improve fire extinguishing efficiency and prevent the resurgence of wildfires, so that large-scale wildfires can be effectively extinguished. [0003] However, the addition of fire extinguishing agent by helicopter is limited by the following conditions: (1) The power is the highest when hovering, and the strong wind generated can easily cause light objects on the ground to roll up and gravel to rise. It is strictly forbidden to add water under large helicopters; (2) Take water ...

AI Technical Summary

Problems solved by technology

However, there are the following problems: (1) The fire extinguishing agent is conductive and corrosive to a certain extent. Dropping it into the helicopter cabin may cause short circuit or corrosion of the helicopter control line connector, which poses a high safety risk. Therefore, it is necessary to ensure that there is no leakage during the whole adding process; (2) Helicopter load resources and space resources are very precious, and the fire extinguishing agent is added by dissolving in water, which is heavy

Due to load and space constraints, the fire extinguishing agents that can be carried into the helicopter cabin are very limited

Helicopter buckets run out of fire extinguishing agent after a small number of times of fire extinguishing. It needs to stop on the ground to add fire extinguishing agent. Proportional configuration of fire extinguishing agent requires 300kg of liquid fire extinguishing agent, which is extremely low in practicability; (3) The fire extinguishing agent is mixed with water to a degree of saturation, and circulating water is needed to dissolve the fire extinguishing agent. Equipment (such as stirring equipment, etc.), making it difficult for the fire extinguishing agent to dissolve quickly

[0005] In order to overcome the problems of traditional solutions, a helicopter fire extinguishing system that does not directly carry liquid fire extinguishing agent is provided in the related art. A fire extinguishing agent dissolving box is arranged in the helicopter cabin, and the fire extinguishing agent dissolving box is used to accommodate and dissolve solid fire extinguishing agent raw materials and A liquid fire extinguishing agent is formed. However, the dissolved liquid fire extinguishing agent is still transported from the helicopter cabin to the bucket and mixed with water for fire extinguishing. The fire extinguishing agent dissolution tank may leak due to aging or process problems, or it may be due to joint damage, blockage, etc. As a result, the joints fall off during use, which will cause a great safety risk to the operation of the helicopter; in addition, the equipment that needs to be sealed is heavy, and the pump body used for mixing also needs to occupy space and weight, and the large load will affect the center of gravity of the helicopter , which in turn affects the stability of the helicopter flight process

[0006] Therefore, there is an urgent need to develop a helicopter fire extinguishing device to solve the problems of poor practicability of adding traditional helicopter fire extinguishing agents and safety risks due to liquid leakage.

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