F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
26/18, 248/66
F16L 3/00 (2006.01) F16L 3/16 (2006.01)
Patent
CA 1055912
ABSTRACT An anchor support for supporting a pipeline above the ground has a self-aligning support saddle that allows the pipeline to orient itself on the anchor support during construction to relieve stresses in the pipeline and to allow for variations from nominal pipeline elevation and angulation relative to the ground. The anchor support normally fixes the pipeline's position relative to the ground but also allows relative movement between the support and the pipeline upon occurrence of a seismic disturbance or other disturbance that would cause a dislocation of the pipeline and/or anchor support from its nominal position. The self- aligning support saddle, which includes a ball and socket connec- tion for allowing the pipeline to orient itself over the saddle, is fastened to a shiftable subassembly that rests on a stationary base assembly affixed to one or more ground engaging vertical support members. After the pipeline is aligned, the ball and socket can be permanently interconnected to restrain any further movement of the pipeline relative to the shiftable subassembly. The shiftable subassembly is capable of moving relative to the base assembly in a direction generally parallel to the longitudinal dimension of the pipeline. When a differential force is applied between the vertical support members and the pipeline, as can be caused by a seismic disturbance, the shiftable subassembly can move along with the anchor saddle and the pipeline relative to the base assembly, thereby preventing any substantial damage to the pipeline. A restraining mechanism interconnects the shiftable subassembly with the base assembly to releasably restrain the shiftable subassembly upon application a differential force of less than a predetermined magnitude. Upon application of a predetermined differential force, the restraining mechanism releases the shiftable subassembly so that it can move relative to the base assembly. Once the shiftable subassembly has begun to move relative to the base assembly, the restraining mechanism still applies a differential force opposing the movement. After the shiftable subassembly has moved a predetermined distance relative to the base assembly, an energy absorbing member deceler- ates and stops the shiftable subassembly to prevent it or the remainder of the anchor support from becoming damaged.
276746
Jacobson Conrad E.
Maple James A.
Exxon Production Research Company
Exxon Research And Engineering Company
LandOfFree
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