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Cooling Tower Vibration Monitoring

Cooling Tower Vibration Monitoring. Closed Loop Cooling Tower System. Types of Mechanical Draft Towers. Typical Power Plant. Cooling Towers At Nuclear Plants. Cooling Tower Critical Components. Fans Gear Boxes Motors. Cooling Tower Failures - Blades. Cooling Tower Failures - Gearboxes.

reuben-delaney
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Cooling Tower Vibration Monitoring

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  1. Cooling Tower Vibration Monitoring

  2. Closed Loop Cooling Tower System

  3. Types of Mechanical Draft Towers

  4. Typical Power Plant

  5. Cooling Towers At Nuclear Plants

  6. Cooling Tower Critical Components • Fans • Gear Boxes • Motors

  7. Cooling Tower Failures - Blades

  8. Cooling Tower Failures - Gearboxes

  9. Cooling Tower Application Issues • Towers are very flexible • High vibration values during startup. • Complex gearbox (1800/120 RPM) • Neighboring cells effect measurement • Starting cell 2 can shut down cell 1 • Reversing fans in cold climates • Water build up in blades • Speeds are slow and based on diameter • Distance to control room • Corrosion from bad pH

  10. Existing “Earthquake” Sensors • Calibrated by dropping sledgehammer • Do not always trip • Some use Ball and Pedestal • Operators do not like climbing the tower • Alarm value usually set to high to help • No provision for Startup (Tx) • No OK Circuit

  11. CMCP-500 Series Monitoring • Transmitter or Monitor • 24 VDC Powered • Trip Multiply Standard • OK Circuit • ADC Option • RF Link option • Fiberglass or SS NEMA 4X Enclosures

  12. 12 Cell Cooling Tower Monitoring System • Typical Rotating Machinery and Sensors • Circulating Water Pumps (2) • 6 Accelerometers • 4 Eddy Probe Systems • 2 Phase • Cooling Tower Pumps (2) • 6 Accelerometers • Gearbox and Fan (12) • 12 Accelerometers or Velocity • Motor and Jackshaft (12) • 12 Accelerometers (Output Shaft)

  13. 10 Cell Cooling Tower Monitoring System

  14. Dual Path Monitoring • Displacement (mils) • Running speed (1X) • Blade passing • Blade multiples • Velocity (in/sec) • Gear mesh • Bearings

  15. Dual Path Monitoring System • CMSS793V Transducer • CMCP-602L-32-01-01 Cable • CMCP-5302 Monitoring System w/ • CMCP-530-100V-02R-XXX-XXX • 0 to 1.0 in/sec (0 to 25 mm/sec) • CMCP-535-100V-03-XXX-XXX • 0 to 15 mils (0 to 375 microns)

  16. Circulating Water Pumps

  17. Where are the Cooling Towers ? • Power Generation • Steam • Nuclear • Geothermal • Hydrocarbon Processing (HPI) • Refineries • Chemical Plants • Food Processing • Tropicana • Campbell Soup • Large Buildings (HVAC)

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