AEROPLANE CABIN EMERGENCY HERMETIC SEALING DEVICE FOR WATER LANDING Russian patent published in 2008 - IPC B64D25/00 F16K17/36 

FIELD: transport.

SUBSTANCE: invention is intended aeroplane cabin emergency hermetic sealing during water landing and may be used in situations requiring free air flow and preventing liquid flow. Device for aeroplane cabin emergency hermetic sealing in emergency water landing consists of casing with lid and floating ball valve. At that device is equipped with elastic ring rigidly secured on hull upper part, guide made as spring-loaded rod with flat centering spring with bends over periphery. Floating ball valve has on one side spherical surface contacting with elastic ring and on other side its cylinder-shape surface is rigidly connected with spring-loaded rod with flat centering spring with bends over periphery and lid. At that casing has windows for air flow.

EFFECT: improvement of valve hermetic sealing preventing penetration of water, simplification and improvement of valve performance under conditions of vibratory and impact loads, and automatic valve performance at expense of its buoyancy.

3 dwg