Testing device for measurement of a leak rate of a spraying or i

Details Testing device for measurement of a leak rate of a spraying or i Testing device for measurement of a leak rate of a spraying or i

1991-08-02

1993-05-25

Williams, Hezron E.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73 40, 73 46, 356436, G01M 302, G01M 338

Patent

active

052129799

ABSTRACT:
The testing device for measurement of a hydraulic leak rate of a spraying valve (11) with a closable outlet opening(11B) includes a vessel (10) filled with an indicating liquid (12) and a device for holding the valve to be tested with the outlet opening (11B) in an inclined position pointing downward into the indicating liquid during testing, a riser tube (14) formed as a glass capillary tube connected with the vessel (10), a balancing reservoir (17) also connectable with the vessel (10) but disconnectable from the vessel (10) with a shutoff valve (15), a light source (18) positioned relative to the riser tube (14) so as to illuminate the riser tube (14) and the liquid level (M) in the riser tube (14) and a linear scanning camera (19) positioned relative to the riser tube (14) so as to observe the height (H) of the liquid level (M) in the riser tube for accurate measurement of a change in the height (H) of the liquid level M when the closed valve is pressurized. The leak rate is calculable from the change in height of the liquid level as measured accurately by the linear scanning camera, the cross sectional area of the liquid in the riser tube and the measurement time.

REFERENCES:
patent: 3106835 (1963-10-01), Henderson
patent: 3152473 (1964-10-01), Emerson
patent: 3725052 (1989-02-01), Ronniger
patent: 3768305 (1973-10-01), Pechko

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