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Now available... A new technology Turbine Rotor Deflection Monitor System with the ability to prevent seal contact damage and prolong close seal clearance efficiency... something the status quo 70-year old technology bearing orbit monitors can’t do!
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In the 2004 ground-breaking study “Replacement Interstage Seals for Steam Turbines” (EPRI 1010214) Steve Hesler of EPRI assembled a thorough technical and economic analysis of the efficiency of a variety of turbine steam seal upgrade designs and the added fuel costs of operating with enlarged seal clearances. The results of the study yielded the following findings...
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Rotor Deflection Monitoring In Action...
Go/No Go Startup Advisory Video Demos
#1 Example of bowed rotor which will impact seals (No Go).
... This turbine needs continued monitored steam roll prior to startup.
#2 Example of straight rotors for start-up (Good to Go).
...This turbine is ready for startup.
The steam seal damage and resulting efficiency losses by blind startups are prevented by the operator advisories which are adapted to the plant DCS or control room computer system.
Typical slow-roll rotor straightening times are fifteen to thirty minutes depending upon the bow severity. The Good-to-Go advisory is shown when the bow has been reduced to the levels to safely pass the first critical speed.
The Rotor Deflection Monitor (RDM) is a modern, high technology replacement of both OEM Analog Eccentricity Monitors and Bearing Orbit Vibration Monitors which are obsolete on flexible rotors with tilting pad bearings. Virtually ALL of rotor seal damage events examined occurred without any turbine supervisory system detection.
Contact LCC for details on a Rotor Deflection Monitors for your turbines
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