Method of repairing by lining heat exchanger tubes

Details Method of repairing by lining heat exchanger tubes Method of repairing by lining heat exchanger tubes

1990-08-30

1992-10-20

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

2940216, 29523, B23P 1526

Patent

active

051558947

ABSTRACT:
A method of repairing a defective tube in a heat exchanger of the tube-in-shell type comprises inserting a tubular sleeve into the defective tube and extending through the tube from one tubeplate to the other, and bonding the sleeve to each tubeplate. The extremities of the sleeve are preferably welded to the outer surface of the respective tubeplate. In repairing a defective tube which has one end which is bonded to a tubular tubeplate boss having a bore which is of larger diameter than the external diameter of the tube, the diameter of a poriton of the sleeve is preferably expanded to fit the bore of the tubeplate boss after insertion of the sleeve into the tube.

REFERENCES:
patent: 4811759 (1989-03-01), Billoue
patent: 4922605 (1990-05-01), Cartry et al.
patent: 4937933 (1990-07-01), Dietrich
patent: 4960650 (1990-10-01), Vigneron et al.
Patent Abstracts of Japan, vol. 12, No. 464 (M-771)(3311), Dec. 6, 1988.

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