Heat exchange – With means flexing – jarring or vibrating heat exchange surface
Patent
1995-03-17
1996-07-30
Rivell, John
Heat exchange
With means flexing, jarring or vibrating heat exchange surface
165 95, 1510407, 1510404, 122361, 173122, 173211, 173124, F28G 700
Patent
active
055402755
ABSTRACT:
A rapping hammer system adapted for periodically rapping and cleaning tubes of a heat exchanger unit to remove undesired deposits from outside the tubes. A plurality of rapping hammers are each pivotably attached to a radial arm extending outwardly from and spaced apart along a rotatable shaft. A spring device is attached to each radial arm and arranged to contact the rapping hammer with sufficient force so as to substantially restrain repeated striking movements of the rapping hammer against an impact stem of the heat exchange unit following an initial impact of the hammer. A method is also disclosed for operating the rapping hammer system for periodically rapping and cleaning the outside surface of heat exchanger tubes such as boiler tubes of accumulated ash and soot deposits.
REFERENCES:
patent: 1275009 (1918-08-01), Eriksson
patent: 3835817 (1974-09-01), Tuomaala
patent: 5135966 (1994-05-01), Gamache et al.
Atkinson Christopher
Foster Wheeler Energy Corporation
Rivell John
Willis, Esq. Charles L.
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