FÜLL- UND DRUCKAUFSCHLAGSEINRICHTUNG

摘要

Fill and pressurization apparatus having a sectional fluid conductor having a first section fixed relative to the surroundings, and a second section which moves toward the first section to form an enclosure through which a high volume flow rate-low pressure flow may be passed to fill an adjacent open end of a tube with liquid. Said fluid is passed through an inlet conduit, which may be a rigid conduit, to the fixed first section. A seal head insertable into the end of the filled tube has an elastomeric seal member and a rod and a sleeve relatively axially displaceable to compress the seal member and deform it into sealing engagement with a surface of the tube. A stop member on one of the rod and sleeve and a stop surface on the other of the rod and sleeve limit the axial displacement and hence also the compressive force applied to the seal member. The relative displacement is achieved by retracting one of the rod and the sleeve and blocking the retraction of the other. The blocking is provided by two telescoping cylinders, one of which has abutments thereon running in channels provided in the other cylinder. To effect blocking one cylinder is rotated relative to the other so that the abutments are out of register with the channels and engage stop surfaces in an extended condition of the cylinders relative to one another.