Steam turbine split forward flow

Details Steam turbine split forward flow Steam turbine split forward flow

1993-06-25

1994-11-08

Lazarus, Ira S.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

60656, 60679, F01K 1302

Patent

active

053615859

ABSTRACT:
In a steam turbine system including a high pressure turbine section, a reheat turbine section and a low pressure turbine section coupled to a generator, and wherein a boiler supplies steam to the high pressure turbine and wherein a condenser is arranged to receive spent steam from the low pressure turbine and to return the spent steam to the boiler, a process including the steps of: a) during cold start-up, bypassing a portion of the steam generated by the boiler around the high pressure turbine section, reheat turbine section and low pressure turbine section and feeding the bypass portion directly to the condenser, accelerating the turbine to a predetermined speed less than approximately 1000 rpm utilizing control valves at an inlet side of the high pressure turbine section while keeping closed a plurality of intercept valves at an inlet side of the reheat turbine section; and wherein steam pressure to the high pressure turbine section is controlled by a high pressure bypass valve; and b) upon reaching said predetermined speed, fixing the control valves at a learned value corresponding substantially to a valve opening required to reach the predetermined speed; and c) opening the reheat stop valves and and using the intercept valves alone to control turbine speed until a predetermined synchronization speed is reached.

REFERENCES:
patent: 3097488 (1963-07-01), Eggensberger et al.
patent: 3340883 (1967-09-01), Peternel
patent: 3879616 (1975-04-01), Baker et al.
patent: 4120159 (1978-10-01), Matsumoto et al.
patent: 4132076 (1979-01-01), Weiss
patent: 4178762 (1979-12-01), Binstock et al.
patent: 4258424 (1981-03-01), Giras et al.
patent: 4316362 (1982-02-01), Ninomaya et al.
patent: 4386498 (1983-06-01), Lee et al.
patent: 4408458 (1983-10-01), Torii
patent: 4461152 (1984-07-01), Tennichi et al.
patent: 4658590 (1987-04-01), Higashi et al.
patent: 4665706 (1987-05-01), Russell et al.
patent: 4744723 (1988-05-01), Hashimoto et al.
patent: 4748814 (1988-06-01), Tanji et al.
patent: 4793132 (1988-12-01), Okabe
patent: 4853552 (1989-08-01), Kure-Jensen et al.
patent: 4873827 (1989-10-01), Hadano et al.

Affiliated with

Also associated with

Rating

Steam turbine split forward flow does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Steam turbine split forward flow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steam turbine split forward flow will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1773502