RADIAL-AXIAL GAP MEASUREMENT SYSTEM FOR BK-1600B ENGINE ROTORS
SKU0008
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DESCRIPTION
The system provides real-time measurement of the distance in the area of moving parts at high speed. Additionally, the rotational speed is measured. When applied with multiple sensors, the system can experimentally determine the full movement pattern of rotating parts and register runouts and vibrations with high accuracy.
The gap measurement system is based on the principle of an amplitude fiber-optic sensor, consisting of parallel optical fibers. One channel of the sensor is connected to a high-stability laser light source, and the second channel receives the reflected signal from the measured object and transmits it to a photodetector. The amount of the reflected signal directly depends on the distance between the object and the sensor. The system is pre-calibrated by determining the relationship between the gap and the reflected signal power. This system allows real-time measurement of the gap, such as in a gas turbine engine compressor between the blades and the internal surface of the casing.
CHARACTERISTICS
Operational gap measurement: at least 1.2 (5) mm
Measurement accuracy: no more than 0.05 mm
Time to reach operational mode: no more than 15 minutes
Measurement frequency output: at least 800 Hz
Number of fiber-optic sensors: 1–32 units
Sensor operating temperature: -40 to 350˚C
ADVANTAGES OF THE DEVELOPMENT
Small size and weight characteristics
High measurement speed
Ability to implement a large number of change channels
Flexibility in mounting and installation on turbine casing