Waterhammer suppression apparatus
AssigneeWestinghouse Electric Corp.
InventorsRobert E. Henry, James M. Farrington, Joseph M. Kalebich
Life of this patent
Estimating the term…
Abstract
Phenomena in water systems caused by hydraulic transients known as “waterhammer” are suppressed by surge vessels containing crushable, cellular, polymeric materials such as polyethylene, polyurethane and polystyrene foam. The foam may be one piece or in the form of several separate particles contained in nylon netting. A water permeable screen is located between a nozzle connection and the cellular polymeric materials for retaining the materials in the surge vessels as the water flows into and out of the vessels. The foam occupies much of the volume in the surge vessels not occupied by the water and the gas contained in the foam can not readily dissolve into the water.
Claims6
Apparatus for suppressing water hammer in a water system, comprising:
- a surge vessel having a permanently open nozzle for hydraulically connecting with the water system;
- cellular polymer particles contained in nylon netting in the surge vessel;
- and
- a water permeable screen spaced from the open nozzle, the water permeable screen separating the cellular polymer from the open nozzle and retaining the cellular polymer in the surge vessel.
Dependencies are inferred from the claim text.