Pipeline safety joint

Patent · Tue Aug 25 04:00:00 EDT 1987

OSTI ID:6105644

Bassett, M

This patent describes a pipeline safety joint to provide a controlled point of weakness in at least one pipeline, the safety joint comprising, in combination: (a) at least one pair of tubular mandrels, each mandrel of a pair being sized to be securable to a pipe-end of a pipeline; (b) a portion of one mandrel of at least one pair and a part of the other mandrel thereof, the portion being insertable in the part to provide fluid communication between the pipe-ends; (c) a latch mechanism on the portion of at least one pair engageable with the part of the other mandrel thereof, effective to hold the mandrel against axial separation; (d) retaining means on one mandrel of at least one pair retaining the latch mechanism in engagement; (e) a sealing ring positioned to seal at least one pair of tubular mandrels; (f) a fluid-tight pressure compensation chamber surrounding the portion of one mandrel of at least one pair and engageable on one mandrel and the other mandrel of at least one pair; (g) fluid passage means providing communications between the interior of at least one mandrel and its associated fluid-tight pressure compensation chamber, at least one seal and its associated compensation chamber being dimensioned whereby forces produced to separate the mandrels of a pair by fluid pressure within the mandrels are equalized by the fluid compensation chamber; and (h) frangible securing means normally holding the mandrels of at least one pair in interengagement.

• Assignee: James Howden and Co., Limited, Glasgow
• Patent Number(s): US 4688827
• OSTI ID: 6105644
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
42 ENGINEERING
420205 -- Engineering-- Transport & Storage Facilities-- (1980-)
ENERGY SOURCES
FASTENERS
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
JOINTS
NATURAL GAS
PETROLEUM
PIPE JOINTS
PIPELINES
SAFETY
SEALS
STRESSES
TRANSPORT