Patent ID: 11920720
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  E | IPC E  F

Claim 0:
1. A water hammer mitigation system, comprising:
a branch connection with a first end fluidly coupled to a main pipeline at a surge point on the main pipeline and a second end fluidly coupled to the main pipeline at a distal point on the main pipeline that is distal to the surge point;
a shutdown valve in the main pipeline that is downstream of a pressure source and upstream of the branch connection; and
a bi-directional surge relief device disposed on the branch connection and that comprises,
a housing with a first end proximate the branch connection first end and a second end proximate the branch connection second end,
a first cavity in the housing adjacent the housing first end and a second cavity in the housing adjacent the housing second end,
a first flow channel extending through the housing between the first cavity and the housing second end,
a second flow channel extending through the housing between the second cavity and the housing first end,
a first relief valve in the first cavity that is moveable into a first open configuration when a pressure differential across the relief device exceeds a first predetermined threshold pressure and so that the housing first and second ends are in fluid communication through the first flow channel and first cavity, and
a second relief valve in the second cavity that is moveable into a second open configuration when a pressure differential across the relief device exceeds a second predetermined threshold pressure and so that the housing first and second ends are in fluid communication through the second flow channel and second cavity.