Apparatus for detecting operational anomalies in pressurized flu

Details Apparatus for detecting operational anomalies in pressurized flu Apparatus for detecting operational anomalies in pressurized flu

1995-06-07

1997-01-21

Hofsass, Jeffrey

Signals and indicators

Indicators

Fluid flow

116272, 116DIG42, 340607, G01L 1912

Patent

active

055951384

ABSTRACT:
The present invention relates to an apparatus for detecting operational anomalies in a pressurized fluid circuit having a main pump, a fluid filter and a booster pump connected in series. The apparatus has an indicating detector to provide an indication of a system malfunction and a switching device connected to the indicating detector, as well as to various points in the pressurized fluid circuit, to enable the indicating detector to detect a malfunction in either the booster pump or the filter. The switching device has pressurized fluid inlets connected to a point upstream of the booster pump, a point between the booster pump and the filter inlet and to a point between the filter outlet and the inlet of the main, high pressure pump. The switching device monitors the pressure drop between the inlet and outlet of the fluid filter and, should the filter become clogged, when the pressure drop across the filter reaches a predetermined threshold value, the indicating detector will automatically indicate such a malfunction to the fluid circuit user. Similarly, the switching device will also detect a malfunction in the booster pump so as to cause the indicating detector to indicate such a malfunction.

REFERENCES:
patent: 3200787 (1965-08-01), Darnell
patent: 4133621 (1978-09-01), Frank
patent: 4899535 (1990-02-01), Dehan et al.

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