Patent GB-768854-A (GB)
Title: Improvements in or relating to a gas turbine power plant
IPC: F02C7/105
Filed: 1954-10-26
Abstract: 768,854. Gas turbine plant; centrifugal compressors. CHRYSLER CORPORATION. Oct. 26, 1954 [Oct. 29, 1953], No. 30847/54. Classes 110 (1) and 110 (3). [Also in Group XIII] A gas turbine plant comprises a centrifugal compressor; a volute diffuser disposed around the axis of the compressor through which air passes to a portion of rotary regenerator mounted to rotate on an axis perpendicular to the compressor axis, a combustion chamber arranged adjacent to the portion of the rotary regenerator referred to and a turbine assembly coaxial with the compressor fed by the combustion chamber. A centrifugal compressor 10 is supplied with air through a circular air intake 12 which converges towards the compressor axis. This intake has a reverse curve configuration which, it is stated, suppresses high pitch noises produced by the compressor. If desired, a lining, such as fibre glass board, may be fitted inside the cover-plate 14 to damp these noises. A finned oil cooler 13 may also be located in the intake. The compressor rotor 26 comprises a pre-compressor 24 which supplies the air to the main compressor blades 28. The compressor discharges through a volute diffuser 30 into a domed chamber 32 which leads the compressed air into a segment of the rotary regenerator 36 which revolves about a hub 38. The regenerator 36 consists of a core structure 40 and a rim member 42 in which are mounted a series of plain stainless steel plates 136, Fig. 7, and a series of corrugated stainless steel plates 138, wound alternately about the hub 38. The plates 136,.138 may be copper brazed together to form an integral unit. The rim 42 has gear teeth 132 by means of which the regenerator is rotated. The air passes through the regenerator to chamber 44 which surrounds a turbine assembly 46 and is led from there to the combustion chamber 62. The combustion chamber 62 comprises fuel injection means 72, a flame tube 66 and ignition means 70. The combustion products from the chamber 62 pass through a conduit 64 into the annular space 74 defined by the baffles 48 and 76. The baffle 48 is made of stainless steel. The gases then pass through the turbine into a diverging exhaust conduit 78 which discharges into a chamber 80. The gases leaving the chamber 80 pass through the remaining segment of the rotary regenerator into an exhaust chamber 84 which is connected to atmosphere. The turbine assembly 46 comprises a primary turbine wheel 92 and an output turbine wheel 96. The turbine wheel 92 is carried by a bearing 102 and is attached to the compressor rotor 26 and pre-compressor 24 by a shaft 110. The turbine wheel 96 is carried by a bearing 118 and drives the output shaft 130 through a reduction gear 128. The power plant is supported by brackets attached to the sides of the compressor casing. The main casing casting 16 is preferably provided with a lining of <SP>1</SP>/ 32  inch sheet metal covering a # inch layer of dimpled aluminium sheets. A portion of the air discharged from the compressor may be directed into the space occupied by the aluminium sheets for additional cooling.