Tyco Flow Control has developed an advanced Fasani bled steam check valve specifically for supercritical coal-fired power stations. The valve was custom-engineered for a major boiler manufacturer, in a contract for several power stations in different locations around the globe. The check valve portion of the contract is worth EUR 2.5 million.
The valve was designed to meet two key requirements; it must close up to ten times faster than current valves and close 100 times without deformation. Tyco’s Fasani engineers met these stipulations through modifications to the hinge design without changing the body, actuation system or seat. The typical closing time of the new Fasani bled steam check valves is 0.1 seconds, compared with 0.6 – 1 second in previous designs.
The space limitations of newer plants with an 800MW or higher output and improved efficiencies demand re-designs and a more complex layout, such as around the boiler. The Fasani bled steam check valve is designed to be situated closer to the turbine, and to handle a harsher operating environment. Its proximity to the turbine demands an increased closing speed to protect the turbine blades from damage from reverse steam flow.
The valve was in design and development for more than a year and is available for situations where resilience to the environment and speed in closing are essential. Collaboration with the Politecnico di Milano formed a key stage in this design process.
The valve was designed to meet two key requirements; it must close up to ten times faster than current valves and close 100 times without deformation. Tyco’s Fasani engineers met these stipulations through modifications to the hinge design without changing the body, actuation system or seat. The typical closing time of the new Fasani bled steam check valves is 0.1 seconds, compared with 0.6 – 1 second in previous designs.
The space limitations of newer plants with an 800MW or higher output and improved efficiencies demand re-designs and a more complex layout, such as around the boiler. The Fasani bled steam check valve is designed to be situated closer to the turbine, and to handle a harsher operating environment. Its proximity to the turbine demands an increased closing speed to protect the turbine blades from damage from reverse steam flow.
The valve was in design and development for more than a year and is available for situations where resilience to the environment and speed in closing are essential. Collaboration with the Politecnico di Milano formed a key stage in this design process.
