Combined cycle gas turbine system

Details Combined cycle gas turbine system Combined cycle gas turbine system

2005-11-22

2005-11-22

Casaregola, Louis J. (Department: 3746)

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

C060S806000

Reexamination Certificate

active

06966171

ABSTRACT:
A combined cycle gas turbine system is improved to enhance a gas turbine efficiency and a combined efficiency by effecting steam-cooling of a combustor transition piece and a turbine blade. The combined cycle system has a gas turbine (8) having a generator (1), a compressor (2), a combustor (3), a blade cooling air cooler (4) and a turbine (6), a steam turbine (29) having a high pressure turbine (21), an intermediate pressure turbine (22) and a low pressure turbine (23), and a waste heat recovery boiler (9). Saturated water of a high pressure pump (27) is partially led into a demineralizer (118) and a water sprayer (116) for cooling steam to be supplied into a moving blade (52). The steam, after being used for cooling, is recovered into a reheater (20). Outlet steam of the high pressure turbine (21) is led into a stationary blade (53) for cooling thereof and the steam is then recovered into an inlet of the intermediate pressure turbine (22). Also, steam of an intermediate pressure superheater (16) is led into a combustor transition piece (54) for cooling thereof and the steam is recovered into the inlet of the intermediate pressure turbine (22). Thus, moving blade cooling steam is reduced and the combined efficiency is enhanced.

REFERENCES:
patent: RE36497 (2000-01-01), Tomlinson
patent: RE36524 (2000-01-01), Tomlinson
patent: 6089012 (2000-07-01), Sugishita et al.
patent: 6116017 (2000-09-01), Mori et al.
patent: 6205762 (2001-03-01), Uematsu et al.
patent: 6301874 (2001-10-01), Wakazono et al.
patent: 6389797 (2002-05-01), Sugishita et al.
patent: 6438939 (2002-08-01), Uematsu et al.
patent: 0911504 (1999-04-01), None
patent: 0939201 (1999-09-01), None
patent: 2699808 (1997-09-01), None
Patent Abstracts of Japan, vol. 1999, No. 09, Jul. 20, 1999 & JP 11 093687 A (Mitsubishi Heavy Ind Ltd), Apr. 6, 1999.
Patent Abstracts of Japan, vol. 1999, No. 12, Oct. 29, 1999 & JP 11 200889 A (Mitsubishi Heavy Ind Ltd) Jul. 27, 1999.
Patent Abstracts of Japan, vol. 1999, No. 03, Mar. 31, 1999 & JP 10 339109 A (Mitsubishi Heavy Ind Ltd), Dec. 22, 1998.

Affiliated with

Also associated with

Rating

Combined cycle gas turbine system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combined cycle gas turbine system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined cycle gas turbine system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3468274