SEALED DEVICE Russian patent published in 2019 - IPC G01M3/08 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in testing cavities of aircraft and rocket equipment, as well as in other fields of engineering. Summary: device comprises housing (1) with inner cavity (2) and bore (3), in which groove (12) is made. Cover (4) is provided in bore (3) provided with fitting for fluid medium (5) with radial outlet (6) extending to cylindrical surface (7) of cover (4). In first (10) and second (11) grooves on cylindrical surface (7) of cover (4) first (8) and second (9) radial sealing rings are arranged, which seal radial clearances between bore (3) and cover (4). Radial outlet (6) of fitting (5) is located between first (10) and second (11) grooves. Cover (4) is axially movable relative to housing (1) and fixed in two positions. At one position of cover (4), radial outlet (6) of fitting (5) channel is interconnected with inner cavity (2) of housing (1), and in the other position – isolated from inner cavity (2). Cylindrical surface (7) of cover (4) and bore (3) have identical diameters. First (8) and second (9) radial sealing rings also have identical diameters. First (10) and second (11) grooves also have identical diameters. At the point of intersection of turnery (12) with bore (3) in housing (1) on both sides of turnery (12) there are conic bevels (13, 14) introduced for sealing rings (8, 9). Note here that distance between intersection of surfaces of conic bevels (13, 14) with bore (3) is less than or equal to distance between closest ends of first and second grooves (10, 11).

EFFECT: technical result is simple design of the device and reduced range of components of its products.

1 cl, 2 dwg