초록 ▼

A compression intercooled gas generator operating at high-cycle pressure ratios of 35 to 65 atmospheres to furnish hot pressurized gas sequentially to a diffuser, to a reheat combustor and then to a power turbine. An associated method of compression intercooling with an optimum intercooling pressure

A compression intercooled gas generator operating at high-cycle pressure ratios of 35 to 65 atmospheres to furnish hot pressurized gas sequentially to a diffuser, to a reheat combustor and then to a power turbine. An associated method of compression intercooling with an optimum intercooling pressure ratio to minimize overall combined-cycle efficiency degradation when said gas generator, diffuser, reheat combustor and power turbine are operating in conjunction with a heat-recovery boiler and a steam or vapor turbine. A coaxial shafting arrangement for driving the low-pressure and high-pressure compressor sections. A pressure-retaining casing arrangement enclosing the high-pressure portion of said gas generator to contain the higher than normal pressure of said gas generator.

대표청구항 ▼

An open cycle axial flow turbo hot gas generator assembly of modular construction for generating a hot gas at a bakc pressure above atmospheric with essentially an axial movement of the working fluid past any row of moving blades comprising: a. A cylindrically shaped sectionalized outer casing to re

An open cycle axial flow turbo hot gas generator assembly of modular construction for generating a hot gas at a bakc pressure above atmospheric with essentially an axial movement of the working fluid past any row of moving blades comprising: a. A cylindrically shaped sectionalized outer casing to retain and direct the flow of said working fluid and to provide structural integrity of said gas generator assembly, b. An air intake at one end of said casing, c. A low pressure axial flow compressor mounted in said casing, connected directly to said intake to receive air therethrough and having a plurality of rows of moving blades whereof there is given flow pitchline radius of r2 and wherein the torque transmitted to overhung rotating parts of said low pressure compressor and the rotating forces thereof are carried by a single axle style bearing and stub shaft arrangement. d. A low pressure compressor discharge air housing connected to said casing and forming part of said casing with at least one radial discharge flange for discharging said low pressure compressor heated air to an external intercooling means, e. A low pressure return air housing removably connected and fitted to said low pressure discharge housing forming part of said casing with at least one radial return air flange for receiving cooled air from said external intercooling means, f. A high pressure axial flow hollow compressor mounted in said casing, connected directly to said return air housing having a plurality of rows of moving blades and variable stator blades whereof there is a given flow pitchline radius r3 wherein said flow pitchline radius r2 of said low pressure compressor is substantially greater than that of said radius r3 of said high pressure compressor and wherein the RPM of said high pressure compressor is substantially greater than that of said low pressure compressor, g. Combustion apparatus mounted in said casing and connected directly to said high pressure compressor to receive the air compressed by said high pressure compressor and wherein the temperature of said working fluid is elevated by burning a fuel therein, h. An axial flow high pressure turbine having an open hub with at least one stage mounted in said casing and connected to said combustion apparatus therefrom and drivingly connected to said high pressure compressor by means of a hollow shaft passing axially through said combustion apparatus, the power developed being substantially wholly absorbed by said high pressure compressor, i. An axial flow low pressure turbine with at least one stage mounted in said casing connected directly to said high pressure turbine to receive the exhaust therefrom and drivingly connected directly to said low pressure compressor by means of a short compressor stub shaft and thereto a second driving shaft passing coaxially through said high pressure turbine open hub, said high pressure hollow shaft and said high pressure hollow compressor, the power developed by said low pressure turbine being substantially wholly absorbed by said low pressure compressor, j. An axial flow annular discharge duct and flange mounted in said casing connected directly to said low pressure turbine to receive the exhaust therefrom and to provide means for connecting thereto the hot gas generated: in which said low pressure compressor of said hot gas generator contains multiple stages to accomplish a compression ratio no greater than about 3.2 with said single bearing overhung design and in which said high pressure compressor of said hot gas generator contains multiple stages to accomplish an overall compression ratio for both low and high pressure compressors of at least about 35 and wherein said low pressure discharge housing contains a low pressure compressor discharge axial duct and radial diffuser flaring outwardly to said radial discharge flange and wherein said low pressure return housing contains an “S”shaped low pressure reverse flow return duct tucked inside and under said low pressure discharge duct wherein adequate volumetric dimensions are provided with the radii of said r2 and r3 and compressor stub shaft to yield a return velocity inside and return duct of about 75 feet per second therein resulting typically in a 0.25 percent pressure loss.