Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1986-11-25
1991-01-15
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Combustion products generator
60757, F02G 100
Patent
active
049844296
ABSTRACT:
It has been found that in a dry low NOx combustor of the type having an upstream combustion chamber and a downstream combustion chamber interconnected by a venturi section, the fuel-air ratio and uniform fuel-air mixing can be improved by providing an annular shield upstream of the venturi region. The shield is impingement cooled through the venturi and provision is made for dumping cooling air farther downsteam in the downstream combustion chamber. With the aforesaid improvements in mind, the upstream combustion chamber is provided with first and second inner liners which are also impringement cooled an which provide combustion air farther upstream into the upstream combustion chamber to further improve fuel-air mixing and to maintain the desired fuel-air ratio.
REFERENCES:
patent: 3905192 (1975-09-01), Pierce et al.
patent: 4109459 (1978-08-01), Ekstedt et al.
patent: 4292801 (1981-10-01), Wilkes et al.
patent: 4480436 (1984-11-01), Maclin
patent: 4555901 (1985-12-01), Wakeman et al.
patent: 4567730 (1986-02-01), Scott
Nealy, D. A. Reider, S. B., "Evaluation of Laminated Porous Wall Materials for Combustor Liner cooling"; Transactions of the ASME, vol. 102, pp. 268-269, Apr. 1980.
Kuwata Masayoshi
Washam Roy M.
Waslo Jennifer
Casaregola Louis J.
General Electric Company
Thorpe T. S.
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