VALVE FOR CONTROL OF HOT GAS FLOW RATE Russian patent published in 1998 - IPC

FIELD: mechanical engineering; valves working at high temperatures, up to 2300 K and pressures, up to 10 MPa; control of thrust vectors of flying vehicles. SUBSTANCE: valve has body with inlet and outlet branch pipes and seat with supply hole. Seat is also provided with through cylindrical hole which is perpendicular to axis of supply hole. Fitted in cylindrical hole is cylindrical adjusting member with supply port made perpendicular to axis of its cylindrical surface. Adjusting member is provided with circular bead whose end surface is engageable with surface of seat. Adjusting member is mounted for rotation and is kinematically linked with shaft through cardan coupling. Clearance formed between end surfaces of adjusting member and cardan coupling is used for placing flexible member made from free-burning material; its thickness exceeds amount of end clearance. EFFECT: enhanced operational reliability of valve. 3 cl, 2 dwg