Method and means for in situ repair of heat exchanger tubes in n

Details Method and means for in situ repair of heat exchanger tubes in n Method and means for in situ repair of heat exchanger tubes in n

1981-06-04

1986-03-04

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Utilizing transitory attached element or associated separate...

2940209, 29447, 291573C, 29DIG35, 138 98, B23P 1700, B23P 1102, B23P 1526

Patent

active

045732485

ABSTRACT:
A method for the in situ repair of heat exchanger tubes in major heat exchanger equipment is disclosed in which supercooled sleeves are inserted into cracked heat exchanger tubes and are expansion-fitted firmly against the inner walls of the cracked tubes. In order to prevent premature expansion of the relatively long, small diameter sleeves during insertion, the tubes may be filled with a heat sink material which is removed following insertion. The insertion is also preferably accomplished very rapidly by means of a power-actuated ram which maintains the sleeve at its low temperature until the very last moment before insertion. Various guide means and plug means for the sleeve are described. The technology is also indicated as being applicable to the temporary sealing of defective tubes by using a removable plug in the form of a closed-end sleeve into whose interior a cryogenic agent can be selectively introduced during insertion and removal.

REFERENCES:
patent: 1955728 (1934-04-01), Allen et al.
patent: 1980156 (1934-11-01), Emrick
patent: 2245608 (1941-06-01), Rogers
patent: 2539057 (1951-01-01), Brown
patent: 2986847 (1961-06-01), Sato
patent: 3064344 (1962-11-01), Arne
patent: 3068562 (1962-12-01), Long
patent: 3889351 (1975-06-01), Tischlinger
patent: 3900939 (1975-08-01), Greacen
patent: 4332073 (1982-06-01), Yoshida et al.

Affiliated with

Also associated with

Rating

Method and means for in situ repair of heat exchanger tubes in n does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and means for in situ repair of heat exchanger tubes in n, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and means for in situ repair of heat exchanger tubes in n will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1587969