Mell How do you warm up a steam turbine?
- Crack open the steam supply isolating valve and warm up the steam pipe to the turbine stop valve.
- Crack open the main stop valve sufficient only to admit steam to the turbine casing, via the nozzles for warming through purpose.
What are the procedures during maneuvering operation for steam turbine?
Warming-through a steam turbine Obtain clearance from the bridge to turn the shaft. Engage the turning gear and rotate the turbines in each direction. Start the sea water circulating pump for the main condenser. Then start the condensate extraction pump with the air ejector recirculation valve wide open.
How do you start a gas turbine?
During startup, the gas turbine (GT) undergoes a sequence of increasing compressor spin to reach firing speed, ignition, turbine acceleration to self-sustaining speed, synchronization, and loading.
Why do we need to warm up the steam turbine?
Steam turbines have to be warmed slowly to avoid excessive differential expansion of the various components, rotor stress, and potentially reduced service life.
What is the difference between steam turbine and gas turbine?
The primary difference between steam and gas turbines is the fact that steam turbines receive power from expanding steam. Fuels such as natural gas can heat condensed water in a boiler, but it’s also possible to utilize renewable thermal energy for this heating. This water-based cycle is the Rankine Cycle.
How do you increase steam turbine speed?
Lower the temperature of the water cooling your condenser, or increase the flow. That’s about the only way to do it quickly. Even if the turbine is entirely indirect condensing, this should help some. In the long run, better turbine design for more efficient use of the steam is the best answer.
What is the standard starting process for start up of steam turbine?
What is the standard starting process for start up of steam turbine? , Assistant Engineer in CFBC Power plant. 1.Turn on LubeOil pumps and check oil flow and pressures across bearings. 2.Turn on turning gear or bearing gear. 3.Open Main Steam Stop Valve. 4.Use auxiliary steam to produce Vacuum in Condenser if its Condensing Turbine.
Crack open the steam supply isolating valve and warm up the steam pipe to the turbine stop valve. Crack open the main stop valve sufficient only to admit steam to the turbine casing, via the nozzles for warming through purpose.
What should I do during cold startup of turbine?
Check that the Trip solenoid valve is not in tripped condition. Turn the hand trip lever to “RUN” position. Slowly operate the ESV by hand wheel until the valve is fully open. Turn the hand trip lever to “TRIP” position and ESV should fall to the closed position.
When do you turn on the turning gear on a steam turbine?
The turning gear can be switched on only when all jacking oil pumps are in operation. After starting the oil system and turning gear, the condensation system can be started, that is cooling water, air ejection and condensate pumping systems. Simultaneously, gland steam system is started to prevent air in-leakage.