| 摘要 |
<p>The invention concerns a rapid connection coupling ( 10 ) for transferring high-pressure gases and/or liquid, in particular for refilling a high-pressure, mobile container such as a gas cylinder with oxygen in a home environment or at a transfill station with a transfill device. The coupling in question comprises the following elements: a tubular housing ( 11 ), an outer sliding sleeve ( 18 ) which can slide relative to the housing ( 11 ); a number of radially expanding collet chuck elements ( 15 ) mounted on the housing ( 11 ) and provided with an engaging contour ( 17 ) which facilitates connection to a matching connection fitting ( 30 ); and a sealing piston ( 22 ) capable of sliding centrally inside the housing ( 11 ), the said sealing piston being brought into contact with the connecting fitting ( 30 ). Internal parts (e.g., pin 25 b and pin 25 c) of the coupling are characterized by having a reduced or minimized volume, thereby reducing the volume of fluid expelled when removing the fitting ( 30 ) from the coupling ( 10 ), thereby reducing the intensity of sound created by disconnecting the fitting ( 30 ) from the coupling ( 10 ). Additionally, the coupling ( 10 ) is characterized by being easy to use and by having a relatively low parts count.</p> |
