Steam generator sludge lancing apparatus

Details Steam generator sludge lancing apparatus Steam generator sludge lancing apparatus

1978-12-28

1981-06-16

Yuen, Henry C.

Liquid heaters and vaporizers

Cleaning

Blow off

122390, 122392, 122405, 239245, 239554, 15316R, F22B 3752, F22B 3754

Patent

active

042730767

ABSTRACT:
Apparatus for removing sludge that may be deposited on a tubesheet of a steam generator comprises fluid headers at the elevation of the sludge to be removed for establishing a circumferential fluid stream at that elevation. A fluid lance is also provided for being moved along the line between the headers emitting a pulsating fluid jet perpendicular to a line of movement of the fluid lance at an elevation substantially corresponding to the level of sludge deposits. The fluid jet forces the sludge to the periphery of the tubesheet where the sludge is entrained in and carried away by the circumferential fluid stream.

REFERENCES:
patent: 994727 (1911-06-01), Dwyer et al.
patent: 1139911 (1915-05-01), Shepler et al.
patent: 1827085 (1931-10-01), Huff
patent: 2613737 (1952-10-01), Schwietert
patent: 2933259 (1960-04-01), Raskin
patent: 3311092 (1967-03-01), McMahon et al.
patent: 4079701 (1978-03-01), Hickman et al.
patent: 4131233 (1978-12-01), Koenig

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