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INDUSTRIAL CASE|MECHANICAL ENGINEERING|COMPRESSOR STATION · BEARINGS

IE A121WORK ACCEPTANCE CERTIFICATE WITH MEASUREMENT REPORT

Turbocompressor K-500-61-1: vibration down, oil pump holds pressure again

Bearing vibration decreased across the whole unit, lubrication system pressure rose. 30–60 % — vibration displacement of the unit bearings, 5–45 → 4–17 µm; 12.2 % — main oil pump pressure, 4.9 → 5.5 atm (1999).

State Enterprise “Malyshev Plant”, EP ZIM branch — compressor station  ·  measurement report approved by the branch chief engineer A.V. Biletsky; measurements certified by the head of the compressor station, the chief field engineer and the head of the laboratory of the occupational safety department

Kharkiv, Ukraine  ·  contract No. 2505 dp  ·  treatment 17–23.03.1999, control measurements after 439 hours of operation  ·  report dated 18.05.1999

PRODUCTXADO RVSrepair-and-restoration compound, introduced into the unit's lubrication system in three stages
TEST OBJECTTurbocompressor K-500-61-1station No. 8 · compressor, gearbox, electric motor, main oil pump
DOCUMENT TYPEWork acceptance certificate
with measurement report (annex No. 1)

Key results

↓30–60%
vibration displacement of the unit bearings,5–45 → 4–17 µm
↑12.2%
main oil pump pressure,4.9 → 5.5 atm
UNIT ASSEMBLYMEASUREMENT POINTSWHAT WAS MEASURED
Compressor K-500-61-11, 2Vibration displacement in three directions
Gearbox, pinion gears3, 4Vibration displacement in three directions
Gearbox, bull gear5, 6Vibration displacement in three directions, noise level
Electric motor7, 8Vibration displacement in three directions
Main oil pumpMOPVibration displacement, lubrication system pressure

Vibration displacement by unit assembly, µm: before treatment → after 439 hours of operation

MEASUREMENT POINT · ASSEMBLYVERTICALTRANSVERSEAXIAL
1 · compressor11 → 69 → 413 → 6
2 · compressor16 → 9.58 → 624 → 15
3 · gearbox, pinion gears22 → 410 → 732 → 15
4 · gearbox, pinion gears10 → 713 → 632 → 15
5 · gearbox, bull gear5 → 75 → 69 → 8
6 · gearbox, bull gear10 → 58 → 88 → 8
7 · electric motor12 → 49 → 540 → 16
8 · electric motor9 → 510 → 8.523 → 17
MOP · main oil pump45 → 430 → 535 → 6

Measurements were taken and certified by the customer's compressor station personnel. The card above shows the typical reduction range across 27 measurement points.

Main oil pump: lubrication system pressure

PARAMETERBEFORE TREATMENTAFTER THREE STAGES
Pressure delivered by the main oil pump4.9 atm5.5 atm

At each of the three treatment stages the pressure rose by 0.2 atm within 40–50 minutes after the compound was introduced — the response repeated three times.

Noise level at the compressor station, dB

MEASUREMENT POINTBEFORE TREATMENTAFTER 439 H OF OPERATION
Point 3′ on the measurement diagram97 dB95 dB
Point 5′ on the measurement diagram97 dB96 dB

Brüel & Kjær type 2203 sound level meter; the measurement points are marked on the diagram in annex No. 1 to the report.

Conclusion of the work acceptance certificate

The certificate, signed by the chief engineer of State Enterprise “Malyshev Plant” and bearing the enterprise stamp, states: “The test results demonstrate the effectiveness of applying the technology at State Enterprise 'Malyshev Plant'”. Behind this wording are measurements taken and certified by the customer's own personnel. After 439 hours of operation, vibration displacement at the bearings of the compressor, gearbox and electric motor decreased within a typical range of 30–60 %, and at the main oil pump from 45 to 4 µm vertically and from 35 to 6 µm axially. The pressure delivered by the oil pump rose from 4.9 to 5.5 atm: the restored pump clearances hold pressure in the lubrication system again. The unit was neither disassembled nor taken out of service — the compound was introduced into the oil of a running machine.

Current equivalent

How such units are treated: Reduction gearboxGear drivePump

About this result: Vibration

Limits of this report: The results relate to the K-500-61-1 turbocompressor at the compressor station of State Enterprise “Malyshev Plant”; on other equipment and under other operating conditions the figures may differ. RVS is an obsolete XADO designation for zero-generation compounds; the current product generation is revitalizants.

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XADO Pilot Testing Programme

Application submitted by

Pilot treatment on the enterprise's equipment

  • any oil- or grease-lubricated assemblies: gearboxes, engines, compressors, bearings and others;
  • treatment within the regular operating cycle, without halting production;
  • instrumental measurements before and after: vibration, temperature, power consumption or current;
  • procedure for the specific assembly, dose calculation and support from a XADO engineer.

After the application, a XADO engineer will agree the units and the list of measurements with you.