Compressor surge counter

Details Compressor surge counter Compressor surge counter

1981-04-13

1983-08-16

Gruber, Felix D.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Determining machine or apparatus operating time or...

377 23, 340683, G01M 700

Patent

active

043995489

ABSTRACT:
A surge counter for a rotating compressor is provided which detects surging by monitoring the vibration signal from an accelerometer mounted on the shaft bearing of the compressor. The circuit detects a rapid increase in the amplitude envelope of the vibration signal, e.g., 4 dB or greater in less than one second, which is associated with a surge onset and increments a counter. The circuit is rendered non-responsive for a period of about 5 seconds following the detection which corresponds to the duration of the surge condition. This prevents multiple registration of counts during the surge period due to rapid swings in vibration amplitude during the period.

REFERENCES:
patent: 3641550 (1972-02-01), Lynas et al.
patent: 3677072 (1972-07-01), Weichbrodt et al.
patent: 3758758 (1973-09-01), Games et al.
patent: 3775763 (1973-11-01), Couch et al.
patent: 3955070 (1976-05-01), Suzuki et al.

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