case study: subsea pump pump condition monitoring
TRANSCRIPT
Pioneering Innovation in Optical Fiber Sensing Pioneering Optical Fibre Sensing
Case Study: Subsea pump Pump Condition
Monitoring 2007-2010
© Smart Fibres Ltd
1
Partners: Smart Fibres, Flowserve, SKF, Teledyne ODI Project Sponsor: Shell Upstream Americas – Deepwater Platform: Subsea twin-screw pump and motor Objective: Develop fibre optic condition monitoring Why fibre: Harsh environment, no subsea electronics
© Smart Fibres Ltd
2
18 motor temperature sensors
© Smart Fibres Ltd
3
Pump lube oil pressure & temperature
© Smart Fibres Ltd
4
Bearing housing tri-axis acceleration
© Smart Fibres Ltd
5
Bearing condition monitoring (with SKF)
© Smart Fibres Ltd
6
Bearing loads match FE model within 5%
© Smart Fibres Ltd
7
10 kHz raw data. Odd signal on one roller
Enveloping shows defect. Time period = cage speed
© Smart Fibres Ltd
8
Enveloping of FFT
Healthy bearing
Damage bearing
© Smart Fibres Ltd
9
Data analysis predicted: 3.0 mm scratch length, minimal scratch depth
© Smart Fibres Ltd
10
Inspection found… 3mm scratch length, and 2 micron scratch depth
© Smart Fibres Ltd
11
Image c/o Shell
on a bearing inside here
visible on an instrument here
A 2 micron scratch here
+44 1344 484111 [email protected] smartfibres.com Smart Fibres Ltd, Spectrum House, Brants Bridge, Bracknell, RG12 9BG, United Kingdom
Pioneering Optical Fibre Sensing
Thank You