device for monitoring the valve to a kolbenkompressors

摘要

The device exhibits a vibration pick-up for each cylinder head and a phase transmitter (10) in the area of the crank drive which detects the respective position of the crank angle. In addition, a multiplexer (33), a detector (38) for the pulse duration and a logic element (40) are provided. The detector (38) picks up the signal output by the vibration pick-up instantaneously switched on via the multiplexer (33). The logic element (40) receives the signal coming from the phase transmitter (10) and the signal processed in the detector (38). The pulse duration of the vibration signal and its phase angle result in output signals in the logic element (40) which are displayed in a recording device (42). The curves shown in the recording device show whether the valves of the compressor are "blowing" or "chattering" so that the compressor can be switched off, if necessary. IMAGE