Safety air bag device used for submarine

Abstract

The invention provides a safety air bag device used for a submarine. The safety air bag device comprises bag bodies arranged on the two sides of a shell of the submarine. The two sides of the shell are recessed inwards to form containing cavities. The portions, in the recessed positions, of the shell serve as the inner side walls of the containing cavities. The bag bodies are placed in the containing cavities when not inflated. Outer protective boards are arranged on outer openings of the containing cavities. The outer surfaces of the outer protective boards and the outer surface, on the periphery of the outer surfaces of the outer protective boards, of the shell are in smooth transition. The inner side walls of the containing cavities are fixedly connected with the inner side bag walls ofthe bag bodies. The inner side bag walls of the bag bodies are connected with inflation and deflation valves. Each inflation and deflation valve is connected with a gas generator through an air pipe.The outer side bag walls of the bag bodies are suspended, and safety valves are embedded in the outer side bag walls of the bag bodies. The safety air bag device has the beneficial effects that no protruding structure exists, resistance and noise are not increased, and submarine navigation safety is guaranteed. An inflation source is controlled simply, devices are few, inflation pipelines are short, and independence is high. A pressure relief device is installed, the buoyancy performance is not affected by the water depth, and deep water floatation assistance can be achieved.

Description

technical field [0001] The invention relates to a safety airbag device for a submarine. Background technique [0002] Submarines have unexpected situations in the depths of the ocean, such as power failures that cause them to fail to float, and the buoyancy of the cabin due to the rupture of the hull, which causes the submarine to lose buoyancy and cannot float. The current method is to use underwater robots and other equipment at the place of sinking To carry out foreign aid rescue, first rescue the people in the cabin, and then use the salvage equipment to salvage the submarine out of the water. [0003] Using inflated airbags to increase the buoyancy of the submarine to reduce the sinking speed or to achieve buoyancy to float has many technical solutions, but considering the safety and functionality of the submarine, the aforementioned solutions have the following disadvantages: [0004] First, external airbags are commonly used. During normal navigation, the airbags are...

AI Technical Summary

Problems solved by technology

[0004] First, external airbags are generally used. During normal navigation, the airbags are folded and placed on a certain position on the surface of the submarine’s shell. Such a raised structure changes the streamlined shape of the submarine, which not only increases the resistance of high-speed navigation for the submarine, but also Increased power demand, and will increase the friction and eddy current noise of the water flow in the submarine shell, which poses a threat to the underwater silence of the submarine and increases the danger of safe underwater navigation

[0005] Second, the symmetrical arrangement of multiple groups of airbags is generally adopted, connected by pipelines, and equipped with high-pressure gas cylinders or air pumps. Such a structure requires the layout of inflatable equipment inside the submarine, which occupies a large internal space. The key problem Especially in the event of an emergency, the control and operation of the inflation valve is very difficult. If a certain valve happens to be in a faulty partition cabin, it will be closed once the water enters, and the valve cannot be accessed, which will cause the airbag to inflate fail

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