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My curiosity is, I know in base load compressor discharge pressure is around 225 PSI. But when base load, turbine is on Premixed mode. Thats why there is continuous purge in the D5 manifold. I don't understand, if by D5 manifold, continuous purge pressure is 225 PSI, how the flame in combustion chamber establish? Because, 225 PSI is so high pressure, flame can be blown off. So, How this is happening?
Again referring GE Document, "GEK 110832a", in description, it is said that, all 63PG (1A/1B/1C/3A/3B/3C) pressure switches are used for give proper block and bleed system. again referring, "0414 - Device Summary", it is said that, all switches will start acting, while cavity pressure will be higher than, 50 PSI. I am so much confused, how is it possible to maintain 50 PSI? because CPD pressure is around 225 PSI during base load.
I will be very grateful to someone , who will kindly make it clear to me.
Thanx a lot
Again referring GE Document, "GEK 110832a", in description, it is said that, all 63PG (1A/1B/1C/3A/3B/3C) pressure switches are used for give proper block and bleed system. again referring, "0414 - Device Summary", it is said that, all switches will start acting, while cavity pressure will be higher than, 50 PSI. I am so much confused, how is it possible to maintain 50 PSI? because CPD pressure is around 225 PSI during base load.
I will be very grateful to someone , who will kindly make it clear to me.
Thanx a lot