DETACHABLE CONNECTION Russian patent published in 2014 - IPC F16L37/28 

FIELD: machine building.

SUBSTANCE: in a detachable connection consisting of a stationary socket piece and a replaceable socket piece with an end face sealing element in-between, a lock in the form of a collet sleeve with external and internal collar and a locking bush, the replaceable sealing socket piece is made of two parts: external and internal ones which are coupled by a leakproof bellows. One end of the bellows is welded to the external part of the replaceable socket piece, and the other end - to its internal part. The said internal part is rigidly connected to the guiding bush on which a resilient element is mounted between the collar of the guiding bush and the flange set on the external part of the replaceable socket piece and fixed to the collet sleeve.

EFFECT: provision for leaktightness in case external bending forces occur on the side of the replaceable socket piece from a supply pipeline of a lower block in a launch vehicle.

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