HOT GAS FLOW CONTROL VALVE Russian patent published in 2009 - IPC F16K5/12 F16K5/08 F16K5/04 

FIELD: engineering industry, aircraft industry.

SUBSTANCE: invention refers to engineering industry, and is meant for controlling aircraft thrust vector. Hot gas flow control valve consists of a body with inlet and outlet branch pipes, and a seat with delivery outlet and through cylindrical hole. Cylindrical regulating element comes into contact with that hole. Cylindrical regulating element is installed with an axial play and provided with delivery opening and ring-shaped collar. Delivery opening is located perpendicular relative to axis of cylindrical surface of the regulating element. End of ring-shaped collar is brought into contact with the seat surface. Between regulating element and shaft there installed is a cardan coupling with an end clearance. Elastic member made from quick-flammable material is installed in the cavity between regulating element and cardan coupling. In regulating element there made is a through hole coaxial relative to shaft and connecting cavity of its delivery opening to cavity between adjacent ends of regulating element and cardan coupling. Elastic member is made in the form of a thin-wall hollow cylinder. On side surface of this cylinder there made are through holes which are located uniformly. On the end of cardan coupling there made is an annular groove on the side of regulating element, which is axially symmetric to the shaft. Inner diametre of annular groove is equal to inner diametre of cylindrical surface of elastic member. Length of elastic member exceeds the distance between adjacent ends of regulating element and annular groove of cardan coupling. Outer diametre of elastic member is smaller than inner diametre of annular cavity between adjacent ends of regulating element and annular groove of cardan coupling. Elastic member gets into annular groove of cardan coupling.

EFFECT: improving valve operating reliability owing to quick combustion of elastic member.

2 dwg