Engineered Mechanical Retrofits For Optimum Performance
Designed to enhance long-term reliability and performance, Emerson’s mechanical solutions help prevent nuisance trips, limit fluid contamination issues and reduce unplanned outages. Our equipment is engineered using industry-leading technologies that meet API standards as well as field-proven Ovation control strategies to maintain peak performance.
Mechanical Solutions
MHC to EHC Conversions
- Modernizing low-pressure mechanical-hydraulic control equipment to a high-pressure electro-hydraulic system increases reliability
- Exact valve positioning and faster response times to megawatt load, speed setpoint, or open/close/trip commands improves performance
- Integrating mechanical diagnostic data into the Ovation control system enhances troubleshooting
- PCMM 3D laser scans enable seamless integration of new and existing equipment, minimize field modifications and reduce installation time
Electronic Overspeed Protection
- Precise speed, zero-speed and creep control helps protect the turbine from potentially catastrophic overspeed events
- Redundant and failsafe design reduces nuisance trips and improves reliability
- Options to retaining existing sensors or integrate custom sensor brackets with OEM equipment helps meet budget and schedule constraints
Trip Upgrades
- Reliable and rapid trip header depressurizing prohibits turbine overspeed conditions
- Fault-tolerant design using 2-out-of-3 voting decreases nuisance trips
- Online testing with pressure feedback to the control system eliminates the need for an actual turbine trip
- Optional manual trip handle provides emergency hydraulic trip capability to enhance turbine protection
- Hydraulic or lube oil filters remove particulate contamination to reduce
Digital Hydro Governor Retrofits
- Replacing outdated mechanical control, feedback links and devices with modern hydraulics and instrumentation improves operation
- Redundant hydraulic control and tripping functions increase reliability
- Accurate, repeatable and responsive reaction to setpoint and frequency changes improves wicket gate control
- Simplified design using fewer signal converters between the control system and field instrumentation reduces communication risks and maintenance costs
Position Feedback Upgrades
- Accurate and repeatable valve stroke position feedback with high-speed response times improves turbine control and safety
- Single, duplex or triplex redundancy reduces the risk of unplanned downtime
- Modern design easily integrates into OEM assemblies, eliminates obsolescence issues, protects equipment and reduces maintenance costs
