Refrigeration Compressor Vibration Measurement and Analysis | Field Vibration Inspection Standard
Excessive vibration causes 26% of refrigeration compressor pipeline crack and bolt loosening faults, xiteliduo Refrigeration Compressors provides vibration test standards for field inspection. Piston refrigeration compressor vibration velocity shall not exceed 4.5 mm/s at bearing housing under rated working condition. Semi-hermetic refrigeration compressor vibration velocity limit is 3.0 mm/s. Higher vibration indicates rotor imbalance or bearing degradation. Cold storage refrigeration compressor vibration measurement points are located at suction flange, discharge flange and bearing housing in three directions: X, Y, Z. Vibration spectrum peak at rotating frequency multiplied by 2 means misalignment or crankshaft bending; peak at 1×rotational frequency usually points to rotor unbalance. 10 recommended hot search keywords: cold storage refrigeration compressor, piston refrigeration compressor, semi-hermetic refrigeration compressor, refrigeration compressor vibration measurement, refrigeration compressor vibration velocity, refrigeration compressor spectrum analysis, refrigeration compressor pipeline crack, refrigeration compressor manufacturer, cold storage compressor field inspection, refrigeration compressor supplier
FAQ
Q1: What percentage of pipeline cracking and bolt loosening faults are caused by excessive vibration? A: 26% of pipeline and bolt failures are induced by over-limit vibration. Q2: What is the vibration velocity limit for piston compressor bearing housing? A: The limit value is 4.5 mm/s. Q3: What vibration velocity threshold applies to semi-hermetic compressor? A: Semi-hermetic compressor vibration velocity should be below 3.0 mm/s. Q4: Where are the standard vibration measurement points on compressor? A: Suction flange, discharge flange and bearing housing, X/Y/Z three axes. Q5: What does spectrum peak at 1×rotational frequency indicate? A: It generally indicates rotor mass unbalance. Q6: What fault corresponds to spectrum peak at 2×rotational frequency? A: Shaft misalignment or crankshaft bending defect. Q7: What secondary damage can continuous excessive vibration bring? A: Pipe fatigue crack, loose fasteners and accelerated seal aging.
