In many combined cycle, co-generation, and refuse-recovery plants
there is a requirement to operate the boiler while simultaneously
performing maintenance on the steam turbine.
Traditionally this has been accomplished with a separate dump
condenser. The method is costly in both equipment and space and can
accompany control and operational problems.
Ecolaire products have a zero-leakage turbine isolation damper that
will allow the main condenser to accept the steam from the
operating boiler, thus eliminating the dump condenser and attendant
systems. The isolation damper is located in the condenser extension
neck and with automatic operation allows complete isolation
typically within 10 minutes or less.
This 10’2” diameter damper will isolate a 60 MW turbine from a
35,945 square-foot condenser in a combined cycle cogeneration
facility. The damper is fabricated as a separate unit for
installation within the extension neck of this axial exhaust
turbine. The damper is fully automated and has been factory
assembled and tested for zero leakage and minus 15 psi
The Steam Turbine Isolation Damper can also be utilized in peak
load applications when process steam is required while the steam
turbine is off-line.