Detecting leaks

Details Detecting leaks Detecting leaks

1984-01-17

1986-03-25

Wyse, Thomas

Measuring and testing

With fluid pressure

Leakage

G01M 304

Patent

active

045774897

ABSTRACT:
The leak detector comprises an annular chamber 11 which leads to a circumferential orifice 14 which in turn leads to an annular duct 21 which is symmetrical about the axis of the detector. Barrier gas is fed to the annular chamber 11, for example from an annular chamber 18 and emerges from the opening 20 to form a substantially laminar flow. Leaks are detected by means of a signal gas within an enclosure at a pressure slightly in excess of ambient, and the signal gas is detected from leaks via a probe 2 which is connected for example to a mass spectrometer. The curtain 1 is stable and enables uneven surfaces to be tracked.

REFERENCES:
patent: 3302449 (1967-02-01), Roberts
patent: 4477986 (1984-10-01), Marshall et al.
patent: 4478096 (1984-10-01), Heilard et al.
Instruments & Experimental Techniques, vol. 19, No. 6, Nov./Dec. 1976, pp. 1734-1736, Plenum Publishing Corp., N.Y. US, V. F. Rogal, et al., "Jet Probe of a Halide Leak Detector".

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