Air leak detector

Details Air leak detector Air leak detector

1975-02-24

1976-04-20

Queisser, Richard C.

Measuring and testing

With fluid pressure

Leakage

73 498, G01M 328

Patent

active

039509834

ABSTRACT:
An apparatus for detecting leaks in a joint between a tube sheet and a tube end fitted into an opening in the sheet comprising a barrel having a near end adjacent one side of said sheet; sealing means between said near end and said face, said sealing means surrounding said joint, a draw rod axially mounted in said barrel for reciprocal motion toward and away from said sheet, one end of said rod adapted to project into said tube, means for reciprocating said rod, a radially expandable plug adjacent said one end, the end of said rod being spaced from plug, resilient means between the end of said rod and said plug, means for expanding said plug radially when said rod is moved in a first direction away from said sheet, a chamber in said barrel adjacent said near end, means for introducing vacuum or pressure into said chamber, a gauge in communication with said chamber whereby the pressure in said chamber can be measured, means for isolating said chamber from the source of said vacuum or pressure.

REFERENCES:
patent: 2342616 (1944-02-01), O'Brien
patent: 2507124 (1950-05-01), Stillinger
patent: 3029630 (1962-04-01), Cummins

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