WELDED TERMINATIONS SLEEVES Russian patent published in 2017 - IPC F16L33/00 

FIELD: machine engineering.

SUBSTANCE: sleeve seal consists of sealing and power envelopes and comprises an inner tube and an outer sleeve, between the tapered portions of which are fixed and sealed with said shell. The tapered portion of the inner tube with sealing interfaces with teeth complementary tapered portion of the outer sleeve, recessed with respect to the base portion by an amount (1.21.6…) tolerances sleeve thickness. The end fitting is further provided with bushings intermediate and resistant where power shell having a greater length with respect to the sealing chamber for the length of intermediate sleeves is not more but not less than two thicknesses of the structural envelope, and this portion propulsion hull is fixed through a spacer having a compensation protrusion minimum thickness the wire diameter of the structural envelope, and the retaining sleeve, with the end protrusion, made equal thickness with the adjacent section of the outer sleeve and the length of the projection from one to three times the thickness of its cross-section, is welded to the outer sleeve in tension fastening.

EFFECT: invention improves the manufacturability of the sleeve.

3 dwg