CN103991523A - Airbag capable of autoinflation underwater - Google Patents

Abstract

The present invention designs an air bag that can be automatically inflated in water, including: a gas cylinder shell (1), a spring (2), a valve inner mouth (3), a reinforcing sleeve (4), a valve jacket (5), and a positioning groove ( 6), top screw (7), sealing ring (8), screw sleeve (9) and air bag (10). When the inside of the gas cylinder is filled with high-pressure gas, the inside of the positioning groove (6) is filled with a whole piece of edible rock sugar, the outside is sealed with paraffin, and the top wire (7) is tightened. Depth, poke a small hole in the paraffin seal outside the positioning groove (6), unscrew the top screw, then put the cylinder and air bag into the water, wait for the rock sugar in the positioning groove (6) to dissolve into the water, the spring (2) Push the inner mouth of the valve (3) to move outward for a distance L, the inner mouth of the valve (3) communicates with the vent hole on the outer casing of the valve (5), and the high-pressure gas in the gas cylinder is automatically ejected to fill the air bag.

Description

Self-inflating airbags in water

(1) Technical field

The invention relates to an air bag, in particular to an air bag with simple structure, convenient operation, safety, reliability and low cost, which can be automatically inflated in water, can be widely used in salvage operations of large sunken ships and wrecked submarines, and belongs to the technical field of maritime salvage.

(2) Background technology

Existing international large-scale submarine salvage method mainly contains two kinds at present: buoy drum method and hoisting method, that is to say, is equivalent to fishing the submarine from the seabed with bigger buoyancy boat or buoy drum. These two methods have the disadvantages of heavy workload, high cost, high risk and long period.

(3) Contents of the invention

In order to make up for the deficiencies in the prior art, the present invention provides a simple structure, convenient operation, safe and reliable airbag for salvage of large sunken ships and wrecked submarines. During operation, a diving robot is used to pull the airbags to the cabins or cabins of wrecked ships and wrecked submarines. In the corridor, the air bag is inflated automatically, squeezing the water out of the cabin or corridor, and the sunken ship floats up.

Its characteristic is that there is an axial vent hole and a transverse vent hole in the middle of the valve inner mouth of the air tank that inflates the air bag. The pressure at both ends of each vent hole is the same, so no matter how much the pressure outside and inside the air tank is Does not affect the spring to eject the inner mouth of the valve. There is an annular groove inside the valve jacket at the position of the vent hole to balance the air pressure around the vent hole of the valve inner mouth, so as to facilitate the axial movement of the valve inner mouth. There is lubricating grease between the valve jacket and the valve inner mouth, which plays the role of lubrication and sealing. The advantage is that when using this air bag to salvage sunken ships and wrecked submarines, the rescued ships do not need to be very large, and the personnel do not need to be many, and can reach small boats. The effect of saving the ship.

(4) Description of drawings

Accompanying drawing is the structure schematic diagram of the air bag that can be inflated automatically in water according to the present invention.

Among them: 1 gas cylinder casing, 2 spring, 3 valve inner mouth, 4 reinforcement sleeve, 5 valve jacket, 6 positioning groove, 7 top wire, 8 sealing ring, 9 screw sleeve, 10 air bag.

(5) Specific implementation methods

As shown in the accompanying drawings, it is a specific embodiment of the airbag that can be automatically inflated in water according to the present invention. Including: gas cylinder shell (1), spring (2), valve inner nozzle (3), reinforcement sleeve (4), valve jacket (5), positioning groove (6), top wire (7), sealing ring (8) , screw sleeve (9) and air bag (10).

Among them, the shell of the gas cylinder (1) is welded with steel plates, and a reinforcing sleeve (4) is welded at the valve where the gas enters and exits. The outermost end of valve overcoat (5) has screw thread and is used for connecting air bag (10). The accompanying drawing shows the state that the inside of the gas cylinder is filled with high-pressure gas and the air bag (10) is not inflated. At this time, the inside of the positioning groove (6) is filled with a whole piece of edible rock sugar or other non-polluting solids that can dissolve in water, and the outside is covered with paraffin wax. Sealed, the positioning groove (6) is barrel-shaped, and the top wire (7) is in a tightened state. Before putting the gas bag and high-pressure gas cylinder into the water for salvage operations, according to the depth of the gas cylinder submerged in the water, place the Open a small hole with a suitable size on the paraffin seal outside the positioning groove (6), loosen and unscrew the top wire (7), then put the gas cylinder and the connected air bag (10) into the water together, at this time The rock sugar in the positioning groove (6) will slowly dissolve into the water, and finally, the spring (2) pushes the valve inner mouth (3) to move outward for a distance L, and the air holes on the valve inner mouth (3) and the valve jacket (5) In the same way, the high-pressure gas in the gas cylinder is automatically ejected to inflate the airbag (10), and the packed and folded airbag is inflated and then unfolded.

The airbag of this invention can be used repeatedly for many times. When inflating an empty cylinder, the process is reversed. First, tighten the top wire (7), and then loosen the top wire (7) after filling the gas cylinder. (3) Push inward for a distance L long, tighten the jacking wire (7), and inject heated and melted edible rock sugar into the positioning groove (6), and seal the outside with paraffin after cooling.

The reinforcement sleeve (4) and the overcoat (5) of the deflation valve can be threaded or welded together.

The gas cylinder and the air bag (10) are connected together by a screw sleeve (9), and a sealing ring (8) is added in the middle for sealing to prevent air leakage.

Claims (7)

1. The present invention relates to an airbag that can be automatically inflated in water, including: cylinder casing (1), spring (2), valve inner nozzle (3), reinforcement sleeve (4), valve outer casing (5), positioning groove (6), jacking wire (7), sealing ring (8), screw sleeve (9) and air bag (10); it is characterized in that the inner mouth of the valve (3) can move axially inside the valve jacket (5) to realize The valve inner mouth (3) communicates with the vent hole on the valve outer cover (5), and the high-pressure gas in the gas cylinder can be ejected automatically to inflate the air bag (10). 2. The airbag that can be automatically inflated in water according to claim 1 is characterized in that: when there is high-pressure gas inside the gas cylinder, the inside of the positioning groove (6) is filled with a whole piece of edible rock sugar or other non-polluting substances that can be dissolved in water The solid is sealed with paraffin on the outside to prevent the valve inner mouth (3) from moving outwards, and the valve inner mouth (3) is tightened with a top wire (7) simultaneously to prevent loosening. 3. The air bag capable of inflating automatically in water according to claim 1, characterized in that: there is a compressed spring (2) inside the valve inner mouth (3) of the gas cylinder, and the positioning groove (6) is barrel-shaped Yes, when the edible rock sugar inside the positioning groove (6) melts, the spring (2) pushes the valve inner mouth (3) to move outward for a distance L, and the valve inner mouth (3) communicates with the air hole on the valve outer shell (5), The high-pressure gas in the gas cylinder is automatically ejected to inflate the air bag (10). 4. The air bag that can be automatically inflated in water according to claim 1, characterized in that: there is an axial vent hole and a horizontal vent hole in the middle of the valve inner mouth (3) of the gas cylinder, and the two vent holes of each vent hole The pressure at both ends is the same, so no matter how much the pressure outside and inside the cylinder is, it will not affect the spring to push the inner mouth of the valve out. 5. The airbag capable of inflating automatically in water according to claim 1 is characterized in that: there is an annular groove inside the valve jacket of the gas cylinder at the position of the vent hole to balance the air pressure around the vent hole of the valve inner mouth, which is convenient The inner mouth of the valve moves axially in the outer casing of the valve. 6. The airbag that can be automatically inflated in water according to claim 1 is characterized in that: there is grease between the valve jacket of the gas cylinder and the inner mouth of the valve to play the role of lubrication and sealing. 7. The air bag that can be automatically inflated in water according to claim 1, characterized in that: the reinforcing sleeve (4) of the gas cylinder and the jacket (5) of the deflation valve can be threaded or welded together ; The gas cylinder and the air bag (10) are connected together by a screw sleeve (9), and a sealing ring (8) is added in the middle for sealing to prevent air leakage.