Reciprocating Compressor

Transcript

Reciprocating Compressor Application Copyright 1999, Frank Howard, STI Vibration Monitoring, Inc. League City, Texas USA www.stiweb.com Vibration Monitoring & Machine Protection Systems Reciprocating Compressor Application  Maintenance Cost are 3.5 X that of centrifugal equipment.  Condition Monitoring can achieve substantial savings in maintenance cost and in increased run time. www.stiweb.com Vibration Monitoring & Machine Protection Systems Reciprocating Compressor Measurement Parameters:  Frame Vibration  Crosshead Vibration  Rod Drop  Rod Run-Out  Main Bearing Vibration  Valve Temperature  Pressure Volume Curve  Rod Loading www.stiweb.com Vibration Monitoring & Machine Protection Systems  Prevent Catastrophic Failure and reduce overall damage  Most common method of tripping machine.  Replaces OEM supplied “Earthquake” switch. Frame Vibration www.stiweb.com Vibration Monitoring & Machine Protection Systems Advantages over OEM “EARTHQUAKE” Switch  Solid State Design (Long Life)  Low Frequency Response  Indication of Vibration Levels  Alert & Danger Alarms  Shutdown “AND” Voting  Fault Detection  Vibration Diagnostic Capability www.stiweb.com CMCP530 Velocity Monitor Vibration Monitoring & Machine Protection Systems Crosshead Vibration www.stiweb.com Vibration Monitoring & Machine Protection Systems Crosshead Vibration CMSS2100 Accelerometer and CMCP280 Housing CMCP525 Acceleration Monitor      Increased clearance between Crosshead and the babitt surfaces. Indicator of Crosshead Pin “reversal” problem. Loose Rod Nuts & Bolts Liquid in the process Machine shutdowns for repair can be scheduled. www.stiweb.com Vibration Monitoring & Machine Protection Systems Rod Drop www.stiweb.com Vibration Monitoring & Machine Protection Systems Rod Drop Eddy Probe System CMCP545 Position Monitor  Eliminate periodic inspections that require machine shutdown and disassembly  Provide real time trend of rider ring wear. www.stiweb.com Vibration Monitoring & Machine Protection Systems Rod Runout X,Y Eddy Probe System CMCP540 Displacement Monitor  Assurance that Rod Run Out is within tolerable limits after the machine is at operating speed and temperature.  Provide early warning of gland seal failure caused by Rod Run Out.  Alarms & Shutdown available. www.stiweb.com Vibration Monitoring & Machine Protection Systems Main Bearing Vibration X,Y Eddy Probes CMCP540 Displacement Monitor  Provide early warning of main bearing failure  Alarms & Shutdown available. www.stiweb.com Vibration Monitoring & Machine Protection Systems Valve Temperature 44 Temperature Points on this machine... Cylinder  Valve failures account for greater than 40% of problems. www.stiweb.com Vibration Monitoring & Machine Protection Systems RTD Valve Temperature Cylinder Valve Cover  Provide early indication of valve problem.  Isolates the problem valve for repair.  Trending condition allows for scheduled shutdowns.  Prevent damage to cylinder lining that occurs when valve parts are ingested by the machine. www.stiweb.com CMCP560 RTD Monitor Vibration Monitoring & Machine Protection Systems Explosion Proof Transducer Housings  Transducer terminations  (+) and (-) 24Vdc Power Supplies  CMCP500 Series  Transmitter/Monitors  A/D Converter with DCS protocol. www.stiweb.com Vibration Monitoring & Machine Protection Systems DCS Link Connection to Control Room Explosion Proof Housings Xdrs Xdrs Xdrs Xdrs Xdrs Xdrs 110Vac Explosion Proof Housings www.stiweb.com Vibration Monitoring & Machine Protection Systems DCS Multi-Drop Link Rod Load Phase Reference F=PA Inboard F=PA Outboard Pressure Sensor 0 Force Mounted Inboard & Outboard through Cylinder Wall 90 180 270 360 Crank Angle www.stiweb.com Vibration Monitoring & Machine Protection Systems Auxiliary Equipment Monitoring Motor Drive: Accelerometer on coupled & Outboard bearing in Horizontal direction (Velocity Measurement). Gas Engine: Accelerometer inside the engine on main bearing supports for detonation & mechanical looseness detection (Acceleration Measurement).  Turbochargers, Cooling Water Fans, Water Pumps, and Oil Pumps www.stiweb.com Vibration Monitoring & Machine Protection Systems Reciprocating Compressor Monitoring Summary Eddy Probe (Phase Reference) CMSS2100 Accelerometer (Crosshead Vibration) Eddy Probe (Rod Drop) Pressure Sensors CMSS2100 Accelerometer (Frame Vibration) Temperature Sensors www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems www.stiweb.com Vibration Monitoring & Machine Protection Systems Thank You www.stiweb.com Vibration Monitoring & Machine Protection Systems