4VRZ turbocompressor station
Turbocompressor station with a step-up gearbox (multiplier). In addition to the electrical parameters, the tooth thickness of the multiplier is measured.
4VRZ turbocompressor station, 1800 l oil system, above 11 000 rpm
The class norm is 0.8 ml per litre; for this station 1.2 ml/l has been assigned. Screw and centrifugal compressors →
What is treated
- An operable turbocompressor with no parts at 100 % wear and no macromechanical damage.
- Oil filters flushed or replaced.
What is measured before and after
| Parameter | Instrument | How and when |
|---|---|---|
| Electric power consumption over a fixed interval | electricity meter | For example, over 20 minutes with conversion to one hour; separately — at idle running. |
| Specific electric power consumption per 1000 m³ of air | calculation from the meter | Measurements are comparable only at the same temperature of the pumped air: a difference of 5–10 °C has a noticeable effect. |
| Vibration level of each bearing support | vibrometer | Vibration displacement, vibration velocity, vibration acceleration in the horizontal, vertical and axial directions. |
| Operating temperature of the plain bearings | thermometer | At the same cooling intensity. |
| Tooth thickness of the multiplier | gear tooth vernier caliper | Over the constant chord, with a description of the contact patches. |
Dosage rates
| Compound | Rate | How and when |
|---|---|---|
| Gel for compressors and bearings | 1.2 ml per 1 litre of the standard oil per stage | 1800 l system: 2160 ml per stage, 6480 ml for three stages. |
Treatment stages
- Dilute the gel in 5–7 l of the standard oil heated to 50–60 °C and introduce it into the oil system of the station.Start of the total operating time count
- The second stage — the same as the first.After 8 hours of total operating time
- The third stage — the same as the first.After another 8 hours of operating time
After treatment
- The treatment is completed after 400 hours of total operating time.
- The measurements are repeated in full and compared with the initial ones.
Points to watch
- At the first stage, 30 minutes of idle running, then under load; at the second and third stages idle running is not obligatory.
Source: XADO applied procedure, lead engineer I. N. Sharaikin. Class norm — instruction IE-24.6-25612000-005-2008, procedure No. 2. Analysis: state/DRIVE_METHODS.md.