HYDRAULIC COUPLING Russian patent published in 2010 - IPC F16L21/08 

FIELD: machine building.

SUBSTANCE: coupling includes the element enveloped with flare and intended to be attached to the first pipeline, and the flared element intended to be attached to the second pipeline. Enveloped element includes the first circumferential groove located on its outer surface, and flared element includes the second circumferential groove located on its inner surface. And flared element are designed for axial coupling, and as a result, pipelines are tightly joint to provide passage of fluid medium through coupling and circumferential grooves are joint in radial direction. Unlocked fixing element has the possibility of selective offset between configuration during locking, in which the fixing element passes in radial direction to both grooves to prevent axial detachment of the element enveloped with flare from flared element, and configuration during unlocking, in which the fixing element is located mainly in one of grooves at some distance from the other in order to provide axial uncoupling. In addition, coupling includes unlocking device intended for offset of fixing element from configuration at locking to the configuration at unlocking and having the hole in peripheral side wall of flared element to provide radial access to unlocked fixing element.

EFFECT: invention improves the connection reliability.

38 cl, 9 dwg