SEALED DEVICE Russian patent published in 2018 - IPC G01M3/00 

FIELD: machine building.

SUBSTANCE: invention relates to engineering and can be used, for example in testing cavities of aircraft and rocket equipment. Essence: device comprises body (1), at outer end (2) of which there is bore (3) communicating with inner cavity (4) of body (1). Body (1) has fluid supply nozzle (5) with channel (6) extending into inner cavity of bore (3). In bore (3), pin (7) is installed and two grooves (10, 11) are formed. Two radial seals (8, 9) are installed in grooves (10, 11) of bore (3) contacting with pin (7) along its cylindrical surface (12). Pin (7) is axially movable relative to body (1) and locked in two positions-the initial position, in which channel (6) of nozzle (5) communicates with inner cavity (4) of body (1) and is isolated from the outside by radial seal (8), and the end position, in which channel (6) of nozzle (5) is isolated from inner cavity (4) by radial seal (9). Channel (6) enter the inner cavity of bore (3) between radial seals (8, 9). Pin (7) on the side of outer end (2) of body (1) has radial protrusions (13) perpendicular to its axis (14), and lead-in chamfer (15) at opposite end (16). Through hole (17) perpendicular to axis (14) of pin (7) is made in pin (7) at the side of outer end (2) of body (1). In through hole (17) of pin (7), stud (18) is installed with the possibility of touching outer end (2) of body (1) at initial position of pin (7). In body (1), blind hole (19) perpendicular to the bore (3) axis and intersecting bore (3) is made. Two radial protrusions (13) of pin (7) are formed by stud (18) portions protruding beyond the outer cylindrical surface of pin (7). Through hole (17), stud (18) and blind hole (19) have the same diameter.

EFFECT: simpler design and improved manufacturability.

1 cl, 2 dwg