Apparatus for deslagging steam generator tubes

Details Apparatus for deslagging steam generator tubes Apparatus for deslagging steam generator tubes

1987-02-04

1988-08-02

Favors, Edward G.

Liquid heaters and vaporizers

Cleaning

165 84, 165 95, F22B 3718, F22B 3748

Patent

active

RE0327239

ABSTRACT:
An apparatus for deslagging tubes in a modern high temperature steam generator by the application of high frequency shock energy is disclosed. The apparatus includes a pneumatic vibrator, a connecting shaft connected at one end to the vibrator by an interference fit tapered connection for transmission of high frequency shock energy from the vibrator to the shaft, a base plate for distributing the high frequency shock energy over a relatively large area encompassing portions of at least a plurality of tubes, the base plate being connected to the other end of the connection shaft by an interference fit tapered connection for transmission of high frequency shock energy from the shaft to the base plate, and the base plate being secured in position adjacent the tubes for the transmission of high frequency shock energy from the base plate to the tubes while allowing for thermal expansion of the tubes during operation of the steam generator.

REFERENCES:
patent: 3721217 (1973-03-01), Willach et al.
patent: 3835817 (1974-09-01), Tuomaala
patent: 3971343 (1976-07-01), Ulrich et al.
patent: 4018267 (1977-04-01), Tomasicchio

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