Gland sealing steam supply system for steam turbines

Details Gland sealing steam supply system for steam turbines Gland sealing steam supply system for steam turbines

1987-11-13

1988-12-27

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Having apparatus cleaning, sealing, lubricating, purging,...

60646, F01K 2100

Patent

active

047931418

ABSTRACT:
In order to recover the heat of the waste gas from a gas turbine, a waste heat recovery boiler is provided, which has a high-pressure steam generating portion consisting of an economizer, a high-pressure steam generator and a superheater, and a low-pressure steam generating portion consisting of an economizer, and a low-pressure steam generator. The steam from the high-pressure generating portion is supplied to the turbine through a high-pressure steam pipe, and the steam from the low-pressure steam generating portion to the same through a low-pressure steam pipe. The high-pressure gland sealing steam is supplied to a high-pressure side steam gland portion the steam turbine through a high-pressure steam extracton pipe branching from the high-pressure steam pipe, a steam pressure regulator adapted to regulate the steam pressure and introduce the excess steam to a condenser, and a high-pressure gland sealing steam pipe. The low-pressure gland sealing steam is supplied to a low-pressure side steam gland portion through a low-pressure steam extraction pipe branching from the low-pressure steam pipe, a reducing valve adapted to supply steam of a constant pressure due to a depressurization operation, and a low-pressure gland sealing steam pipe.

REFERENCES:
patent: 3062553 (1962-11-01), Juzi
patent: 3906730 (1975-09-01), Bellati et al.
patent: 3935710 (1976-02-01), Dickinson
patent: 4517804 (1985-05-01), Ura et al.
patent: 4589256 (1986-05-01), Akiba et al.

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