BALANCED PRESSURE REGULATOR Russian patent published in 2021 - IPC G05D16/06 

FIELD: pneumatic automation devices.

SUBSTANCE: invention relates to pneumatic automatic devices for space equipment and can be used also in various industries for operation with compressed gases, including with helium, if necessary to reduce gas pressure to a given value and automatically maintain this pressure within specified limits. In the disclosed pressure regulator, consisting of a housing with inlet and outlet nozzles and a fixed seat, shut off by a spring-clamped valve, a sensitive element, a loading spring placed in the cup and resting on a plate on the side surface of which grooves are made with fluoroplastic rings installed in them, an adjusting screw, a two-arm lever, axis of rotation of which is fixed in housing, according to invention in housing additional seat is installed with diameter of flow section, equal to diameter of passage section of above mentioned seat, overlapped with additional valve, axis of which is parallel to axis of initially said valve, and direction of pressing of valves to saddles is mutually opposite. Double-arm lever is made with equal arms: first arm by means of pushers via intermediate element rigidly fixed on it, on one side interacts with stock of sensitive element, on other side with pin of initially said valve, and second arm through intermediate element, fixed on it with possibility of rotation, on one side, alternately, depending on pressure, by means of spherical and threaded parts interacts with additional valve, on other side with spring installed in housing.

EFFECT: providing high accuracy of outlet pressure at considerable change of inlet and high tightness on the seat when working with helium.

1 cl, 3 dwg