B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
B08B 3/12 (2006.01) B01F 11/00 (2006.01) B01J 19/00 (2006.01) B06B 1/20 (2006.01) B09C 1/02 (2006.01) G01V 1/133 (2006.01)
Patent
CA 2142971
2142971 9404944 PCTABS00030 A method and apparatus are disclosed for generating intense acoustic pulses by means of the water hammer effect. The method involves generating a water hammer in a conduit by suddenly interrupting a high velocity flow of fluid through the conduit. The kinetic energy of the fluid flowing in the conduit is converted into a high pressure pulse which propagates along the conduit away from the point where the fluid flow was interrupted. The high pressure pulse deforms the wall of the conduit so as to radiate acoustic energy away from the conduit into a fluid medium surrounding the conduit. The relative amount of energy dissipated in the form of mass flow in the surrounding fluid and acoustic energy in the surrounding fluid can be adjusted by changing the characteristics of the conduit wall. The direction in which acoustic energy is radiated into the fluid medium surrounding the conduit can be set by making the conduit wall asymmetrical or by bending the conduit. Embodiments of the invention for acoustic cleaning, viscosity reduction in fluids and acoustic sedimentation are disclosed.
Bridgestone Corporation
Cyprus Foote Mineral Company
Industrial Sound Technologies Inc.
Oyen Wiggs Green & Mutala Llp
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