Pipes and tubular conduits – Plural duct – Coaxial
Patent
1998-07-31
2000-07-11
Brinson, Patrick
Pipes and tubular conduits
Plural duct
Coaxial
138 30, 138109, F16L 918
Patent
active
06085796&
ABSTRACT:
A dual containment hydraulic system includes an inner hose for transmitting and containing pressurized fluids and an outer hose completely encasing the inner hose. The inner and outer hoses are capped and sealed together at each end and secured in place by a locking device, thereby creating a bladder between the outer surface of the inner hose and the inner surface of the outer hose, to contain any fluids leaking from the inner hose should a break occur. The locking device may be sandwiched between two floating bolts and the outermost set of floating bolts may be reverse threaded. The density of the wall of the outer hose and the volume of the bladder of the dual containment hydraulic system may be varied so as to (i) maintain equalized pressure of any contained fluid leaking from the inner hose after a break in the inner hose or (ii) allow for controlled reduction in both volume and pressure of the contained fluid. Other embodiments of the dual containment system include: (i) inner and outer hoses capped and sealed together at each end and secured in place by a locking device, thereby creating a bladder encompassing a portion of the capping and sealing device; and (ii) an inner hose attached at each end to a hard line with an outer hose completely encasing the inner hose and the attaching device and capped and sealed together with the hard line, thereby creating a bladder encompassing the inner hose and the attaching device.
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