초록 ▼

A gas turbine engine of simple construction having a compressed air cooler between the first and second stages of compression. A turbine with a heat recuperator is arranged to transfer heat from the exhaust gas stream to the combustion inlet. The air cooler and recuperator are of tubular type, forme

A gas turbine engine of simple construction having a compressed air cooler between the first and second stages of compression. A turbine with a heat recuperator is arranged to transfer heat from the exhaust gas stream to the combustion inlet. The air cooler and recuperator are of tubular type, formed by a plurality of small diameter tubes uniformly distributed forming coaxial cylindrical bodies placed one within the other. Heat exchange flanges are joined to each other and are situated in the same plane. The stator parts of the engine constitute a shell assembly having plural shells arranged one within the other with their free ends supported on the flanges of the heat exchangers, hermetically sealing the annular spaces and forming inlet and outlet areas of compressed air in the cooler and in the recuperator.

대표청구항 ▼

1. A gas turbine engine, comprising a compressor with a compressed air cooler between stages and a turbine with a heat recuperator for exhaust gases, characterized by the fact that the air cooler is formed by a set of parallel tubes joined at both ends to a first flange and uniformly distributed so

1. A gas turbine engine, comprising a compressor with a compressed air cooler between stages and a turbine with a heat recuperator for exhaust gases, characterized by the fact that the air cooler is formed by a set of parallel tubes joined at both ends to a first flange and uniformly distributed so as to form a hollow body in the inner part of which the heat recuperator is housed, said heat recuperator being formed by a set of parallel tubes joined at both ends to a second flange, both flanges being joined to each other and to the body of the engine, the compressor and the turbine comprising a shell assembly having plural shells arranged one within the other and fixed to the body of the engine, said shells forming the diffusers of the compression stages with their free ends supported on the flanges of the heat exchangers and hermetically closing the different compressed air chambers therein, each annular space so described coinciding with the corresponding inlet and outlet areas of compressed air in the cooler and in the heat recuperator, and housed within said shell assembly are: a distribution chamber for combustion gases connected to a flame tube, turbine nozzles, and a rotor assembly formed by the rotors of the compressor and of the turbine assembled on a single shaft and coupled to an output shaft by means of a reduction gear box joined to the body of the engine. 2. A gas turbine engine, as claimed in claim 1, characterized by the fact that the distribution chamber for the combustion gases is formed by two parts, one of said parts supporting the nozzles of the turbine and the other part forming the external boundary of the gases in the rotor area. 3. A gas turbine engine, as claimed in claim 1, characterized by the fact that the last of the internal shells of the engine is divided into two portions joined to each other, said last shell holding in its inner part the distribution chamber for the combustion gases. 4. A gas turbine engine, as claimed in claim 1, characterized by the fact that the turbine heat recuperator has a cover on the external portion of the set of tubes fixed to the second flange, and one or more inernal partitions that delimit the exhaust gas flow. 5. A gas turbine engine, as claimed in claim 1, characterized by the fact that the air cooler has a cover on the external portion of the set of tubes joined to the first flange, and one or more internal partitions that delimit the cooling air flow. 6. A gas turbine engine, as claimed in claim 1, characterized by the fact that the air cooler has an annular chamber to distribute cooling air. 7. A gas turbine engine, as claimed in claims 1 or 6, characterized by the fact that it has a cover on the external part of the heat exchangers that leads the cooling air and the exhaust gas flow outside the engine.