FUEL TANK PRESSURIZATION SYSTEM PRESSURE SWITCH Russian patent published in 2021 - IPC B64D37/24 

FIELD: aircrafts.

SUBSTANCE: invention relates to a pressurization system of aircraft fuel tanks. The pressure switch of the fuel tank pressurization system contains a housing (1) with an internal cylindrical bore section. In the upper part of the housing there is a cover (2) with an inlet fitting (3), inside which a spring-loaded valve (4) is installed. In the lower part of the body there is a cover (5) with an inlet fitting (6), inside which a sensitive element - a bellows (7) is installed. On the side of the bellows (7), in the switch housing, coaxially to the spring-loaded valve (4), there is a cylindrical rod (10) with the possibility of axial movement, one end rigidly fixed in the bellows (7), and with the other end interacting with the spring-loaded valve (4).

EFFECT: invention ensures the production of fuel from the aircraft outboard tanks and increases the reliability of the aircraft fuel system as a whole.

1 cl, 2 dwg