PRESSURE-TIGHT DEVICE AND METHOD FOR SUPPLY OF FLUID MEDIUM TO CAVITY OF PRESSURE-TIGHT DEVICE WITH ITS PRESSURE-TIGHTENING Russian patent published in 2013 - IPC G01M3/00 

FIELD: test equipment.

SUBSTANCE: pressure-tight device includes a housing with a bore interconnected with inner cavity of the housing, a pin installed in the bore, two radial seals installed in series in the bore grooves, a nozzle with a channel led to the inner cavity of the bore; at that, the pin is installed with possibility of axial movement and fixation in initial and final positions and equipped with radial projections; the channel is led to the inner cavity of the bore between radial seals, and two grooves are made in the bore for radial projections. When implementing the method, the nozzle is interconnected with the supply line, radial projections of the pin are aligned with grooves on the first connecting strip, the pin is axially moved till radial projections of the pin are borne against the wall of the first groove; at that position, angular movement of the pin is performed till the end faces of radial projections, which are the closest to external end face, are borne against the first connecting strip, and after the inner cavity of the bore and the housing is filled with fluid medium, radial projections of the pin are aligned with cavities on the second connecting strip, and after axial movement of the pin till radial projections of the pin are borne against the wall of the second groove is finished, angular movement of the pin is performed till end faces of radial projections, which are the closest to external end face of the housing, are borne against the second connecting strip.

EFFECT: improving processibility and enlarging useful life.

2 cl, 9 dwg