Plug for heat exchanger tubes

Details Plug for heat exchanger tubes Plug for heat exchanger tubes

1985-02-08

1987-03-31

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

165 71, F16L 5500

Patent

active

046535403

ABSTRACT:
A heat exchanger tube plug, which is used to seal the ends of heat exchanger tubes and similar conduits, comprises a hollow housing member which has at one end a relatively large open bore surrounded by a thin wall, and a relatively smaller threaded bore which communicates with the larger bore. An insert member is provided which, in use, is threaded into the smaller bore thereby causing a tapered portion which is formed on the insert member to engage the open end of the large bore causing it to expand and bear against the wall of a heat exchanger tube into which the heat exchanger tube plug has been inserted.
During use, the housing member is prevented from rotating relative to the heat exchanger tube by means of an eccentric assembly which is mounted on the end of the housing member.

REFERENCES:
patent: 1886419 (1932-11-01), Oberhuber
patent: 2764184 (1956-09-01), Fitzhugh et al.
patent: 3020929 (1962-02-01), Knecht
patent: 3044496 (1962-07-01), Maisch
patent: 3119177 (1964-01-01), Knecht
patent: 3135414 (1964-06-01), Lee
patent: 3691609 (1972-09-01), Ice et al.
patent: 3983904 (1976-10-01), Laviano
patent: 4310029 (1982-01-01), Dudek
patent: 4421137 (1983-12-01), Nasbaumer et al.

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