RU200244U1 - INFLATED RESCUE RELEASE VALVE - Google Patents

Abstract

The outlet valve of an inflatable life-saving craft refers to pneumatic check valves for releasing gas from the compartment of the watercraft both freely, when the plug is opened, and with a hand bellows or other vacuum pump, and is designed to reduce the overall dimensions of inflatable watercraft in a stowed condition, used as a rescue means on ships and aircraft and engineering structures. The outlet valve consists of a body, a nut, between which the fabric of the boat compartment is clamped. A plate of elastic material, for example, rubber or polyurethane, with a slot forming a petal, a flat retaining ring, which presses the plate to the bottom of the body with an opening through which air from the compartment of the floating craft is released into the atmosphere when the cover is unscrewed, is inserted into the valve body in series. After evacuating air from the compartment by the pump, the petal under the pressure of the outside air is pressed to the bottom and closes the hole, thereby locking the device. Before being released on board an aircraft or surface vessel, the cover is screwed down and its closed position is easily controlled. This ensures its reliability. After the cylinder is triggered, the gas will not be able to escape from the compartment arbitrarily. The declared outlet valve of the inflatable life-saving craft has high reliability and is easily repaired without disconnecting the valve body from the compartment. To replace the petal element, the retaining ring and the element itself are removed. 1 ill.

Description

The outlet valve of an inflatable life-saving craft refers to pneumatic check valves for releasing gas from the compartment of the watercraft both freely when the plug is opened, and with a hand bellows or other vacuum pump, and is designed to reduce the overall dimensions of inflatable watercraft in a stowed state, used as a life-saving device on ships and aircraft and engineering structures.

Known air valve Golubev and similar valves firms "ZODIAC" (France), "ALLIGATOR" (China), group of companies "TONAR" and others [1], which consist of an outer cup, the actual valve assembly with a poppet locking element and cover. The outer cup is located inside the inflatable compartment, and the valve assembly is screwed into it from the outside, the valve inlet is closed with a lid (plug). This type of valve is also a discharge valve. To release gas from the compartment, push in the poppet pin and rotate it approximately 90 degrees. The valve remains open in this position and gas is released.

Disadvantages. Large dimensions, for minor repairs (cleaning from clogging, adjusting the spring, removing frozen water drops under the plate), it is required to unscrew the valve assembly. In this case, it is necessary to completely lower the compartment, which is absolutely impossible afloat. The part of the poppet closure is fragile, which predetermines the use of the valve only from a low pressure pump. Failure of the poppet element results in functional failure of the valve as a whole. It is completely impossible to evacuate gas from the compartment, since while the operator turns the poppet shut-off element to put it in the check valve position, air again enters the compartment. This increases the volume of the floating craft in the folded state, and when rising to a height in the unpressurized compartment of the aircraft, it causes the floating craft to swell. Valves of this design do not have an indication of the position of the poppet closure element. If it remains in the open position, then when the rescue vehicle is used in an emergency on the water, the gas coming from the gas filling system will immediately go into the atmosphere and the watercraft will not be filled.

In the gas filling system of aviation rescue craft [2, 3], separate filling is used: from a carbon dioxide cylinder through a poppet check valve and from hand bellows through separate inlet valves located on each compartment. Moreover, the inlet valve of the raft SP-12 [3] contains a rubber check valve. The outlet valve does not contain it. On LAS-5M-3, the same valve also serves as an inlet valve [2]. An exhaust valve of this type has only one drawback: while the pump hose is disconnected and the plug is screwed on, air is sucked into the interior of the craft.

The task of the proposed device is to use it for complete pumping of gas from the compartment of the craft, increasing its reliability and maintainability.

The technical result is achieved in that the proposed outlet valve contains a petal locking element, which is easy to remove without disconnecting the valve body from the shell of the compartment of the floating craft.

Figure 1 shows a cross-sectional view of an inflatable lifeboat outlet valve.

The outlet valve consists of a body 1, a nut 2, between which the fabric of the boat compartment is clamped 3. A plate 4 made of an elastic material, for example, rubber or polyurethane, is sequentially inserted into the valve body, with a slot forming a petal 5, a flat retaining ring 6, which presses the plate 4 to the bottom of the hull 1 with a hole A through which air from the compartment of the floating craft escapes into the atmosphere when the cover is unscrewed 7. After the air is pumped out of the compartment by a pump, the petal 5 is pressed to the bottom under the pressure of outside air and closes the hole A, thereby locking the device. The cover 7 with an elastic sealing gasket 8 on the cord 9 is attached to the valve body 1 or to the watercraft body in close proximity to the valve. The cover 7 is screwed onto the body 1 by hand and creates a seal for the outlet valve when the compartment is full.

The lid is screwed on before being handed over to an aircraft or surface vessel and its closed position is easily controlled. This ensures the reliability of the valve and the craft as a whole. After the cylinder is triggered, the gas will not be able to escape from the compartment arbitrarily.

The inventive outlet valve of the inflatable life-saving craft has high reliability and is easily repaired without detaching the valve body from the compartment. To replace the petal element, the retaining ring and the element itself are removed.

Used sources.

1.https: //market.yandex.ru/search?rs= air valves for boats.

2. Aviation rescue boat with five seats LAS-5M-3. Technical description and instruction manual. S.62.00.000.

3. Twelve-seat rescue raft SP-12. Technical description and instruction manual. S.344.00.000.

Claims (1)

The outlet valve of the inflatable life-saving craft, consisting of a body, a nut between which the fabric of the compartment of the flotation device is clamped with a petal locking device, and a cover, characterized in that the locking device consists of sequentially inserted into the body from its outer side plates of elastic material, for example, rubber or polyurethane, with a slot that forms a petal, and a flat retaining ring that presses the plate to the bottom of the body with a hole through which air from the compartment of the floating craft escapes into the atmosphere when the cover is unscrewed.

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