SEALED DEVICE Russian patent published in 2015 - IPC G01M3/00 

FIELD: machine building.

SUBSTANCE: invention relates to the machine building, and can be used during testing of cavities of the devices of aviation and rocketry crafts, and in other applications. Essence of the invention: device contains casing (1) with boring (3) connected with internal cavity (4) of the casing (1). In the sealing grooves (8, 9) of the boring (3) a pin (5), two radial sealing rings (6, 7) out of elastomer are installed. On the casing (1) a union (11) for fluid supply is located with channel (12) outgoing to cavity of the boring (3) at area between the sealing grooves (8, 9). The pin (5) is installed with possibility of axial movement relatively to casing (1) and securing in two positions: in initial - when channel (12) of the union (11) is connected with internal cavity (4) of the casing (1), and final - when the channel (12) of the union (11) is isolated from the internal cavity (4). The device contains also stop (15) to limit axial movement of the pin (5) in its end position. All external surface (10) of the pin (5) is made cylindrical. Stop (15) to limit the axial movement of the pin (5) in its end position is made in the boring (3) and is located between the first (8) sealing groove and internal cavity (4). End (16) of the pin (5) most far from the internal cavity (4) is made flat and perpendicular to the cylindrical surface (16) of the pin (5).

EFFECT: simplified design, reduced overall dimensions and weight.

2 dwg