Pump stroke detection device for turbocompressor e.g. axial compressor, has delta limiter comprising signal input and signal output that are connected with signal output of sensor and signal input of control device, respectively

摘要

The device (50) has a temperature sensor (51) arranged in a working fluid path directly in front of a rotor disk of a turbocompressor (1). A control device (53) forms difference of temperature signals. The control device forms a control value from the difference and outputs a pump stroke detection signal when the control value exceeds a preset limit value. A delta T/dt limiter (52) has a signal input (52a) and a signal output (52b) that are connected with a signal output (51a) of the sensor and a signal input (53b) of the control device, respectively. An independent claim is also included for a method for detecting pump stroke in a turbocompressor.