Abstract: A hermetically sealed hydraulic power supply having an oil reservoir with a pump for pumping oil from the reservoir which is driven by a gas turbine. The gas turbine has a turbine cavity and fluid inlet and exhaust passages communicating therewith. A pair of burst discs are positioned to block the turbine cavity and a quantity of oil fills the turbine cavity and extends to the burst discs to isolate the oil reservoir from the environment and preclude the existence of any space to which reservoir oil could leak. A bellows is positioned to permit thermal expansion and contraction of the oil sealed in the turbine cavity by the burst discs.

Abstract: A fluoroelastomer-hollow glass microsphere coating has been found to provide new and unexpected corrosion resistance to metal surfaces for protection against severely corrosive environments. The coating comprises a fluorocarbon elastomer and 3-50% by volume of hollow glass microspheres or microballoons having a size in the range of about 2-300 microns, preferably 20-200 microns. The hollow glass microspheres or microballoons substantially increases the corrosion resistance of a fluoroelastomeric liquid composition, yielding new and unexpected thermal and chemical resistance, particularly when the coating composition is applied in two or more layers.

Abstract: A turbine impeller pump particularly for use in a geothermal pumping system has a casing with a hollow cylindrical stator or axle fixedly connected in the longitudinal axis thereof which stator or axle defines a flow passage for motive fluid and enables a rotor assembly to be rotatably mounted thereon. The rotor has spaced composite impellers which lie in assembled position in medially disposed pumping chambers in the casing having a suction inlet for fluid to be pumped and a discharge outlet for pumped fluid. The rotor further has first and second multi-stage axial flow driving assemblies disposed on opposite sides of the spaced composite impellers so that the motive fluid for driving the same can be passed to the respective adjacent composite impellers and delivered with the fluid being pumped.

Abstract: A supercharger set for internal combustion engines comprising two turboblowers the two axes of which being mutually perpendicular. The high-pressure turbine is mechanically coupled to the high-pressure compressor, whereas the low-pressure turbine is mechanically coupled to the low-pressure compressor. A single casing is used for the egress of the gases from the high-pressure turbine and their ingress into the low-pressure turbine.

Abstract: In an exhaust gas turbine supercharger, a gas inlet casing is formed in a double cylindrical structure that can be divided into separate inner and outer cylindrical casing sections which are slidably fitted to each other in their axial direction, and a turbine nozzle is supported from the inner casing section. This improved structure of the exhaust gas turbine supercharger facilitates dismantling of the turbine nozzle for its cleaning or replacement.

Abstract: An exhaust-gas turbocharger includes a low pressure stage having a compressor wheel and a turbine wheel mounted on one shaft and a high pressure stage having a compressor wheel and a turbine wheel mounted on another shaft. The two shafts are arranged coaxially one within the other, and the compressor and turbine units of either stage can be located on the inner or outer shaft.

Abstract: A turbocompressor which comprises a compressor housing receiving therein the rotor of the compressor, a gas intake housing adapted to direct a hot gas to the rotor of the turbine. The rotor of the turbine is mounted on the same shaft with the rotor of the compressor. The turbocompressor further comprises a housing cooled by a fluid, for example water, for escape of exhaust gases from the turbine, comprising a load-carrying framework formed by two spaced flanges and rigid longitudinal thin-walled shaped steel elements spaced from one another and interconnecting the flanges. The spaces between the elements are filled with thin steel panels defining jointly with the shaped elements the external wall of the housing. The internal wall of the cooled housing is made in the form of a plain thin-walled trough-shaped steel sheet secured to the flanges and arranged so that a space for circulation of the cooling fluid is afforded between the external and internal walls of the housing.

Abstract: A gas turbine having a rotor including a ceramic turbine wheel and a rotor shaft formed in part of ceramic material, the wheel and ceramic shaft portion being formed as one piece. The ceramic shaft portion extends into a cooler zone of the engine where it is connected to a steel shaft portion. The ceramic shaft portion is supported by a radial bearing, preferably an air bearing. A ceramic disk projects radially from, and is formed as one piece with, the ceramic shaft portion, the disk cooperating with a thrust bearing, preferably an air bearing.

Abstract: A high speed centrifugal compressor is closely directly coupled to the power turbine of a two-shaft gas turbine having a gas generator section separate from its power turbine. Through the direct close coupling and centerline mounting of the gas turbine exhaust casing for free and uniform heat expansion, alignment between stationary and rotating parts of the power turbine and compressor is maintained free from mechanical problems. The compressor stage assembly elements are conveniently interfitted together in the vertically split compressor casing by means of compression bolts minimizing fastening means. Bearings and oil seals are fed by an integrated lubrication and sealing oil system utilizing a compact oil distribution manifold assembly incorporating a quick filter change structure. The turbine fuel distribution system includes means permitting ready replacement and maintenance of individual fuel nozzles without disassembly of the entire fuel nozzle system.

Abstract: In a two-stage exhaust-gas turbocharger the shafts for each stage are disposed in laterally spaced, parallel relation. The exhaust-gas turbine of each stage is arranged within the same housing which can be a common housing or a twin housing with the housing parts joined together by flange connections. The bearing for the end of each shaft located adjacent the turbine is positioned within the housing while the bearing for the opposite end of the shaft associated with the compressor is positioned outside the housing.

Abstract: A single shaft gas turbine engine of the type having a shaft assembly including, in axial alignment, a radial turbine element, a central slinger ring element, a radial compressor element, and a geared power takeoff element. The elements of the shaft assembly are interconnected by a tie bolt. An annular combustor liner defines a combustion chamber that encircles the central slinger ring. The shaft assembly is journaled by two bearings which are respectively located outboard of the turbine and on the geared power takeoff element. Each bearing is carried by a tubular support. Each tubular support has a free end carrying the respective bearing and another end secured to the bearing. The ends are spaced and interconnected by circumferentially spaced ribs to provide a flexible support for the prospective bearing. The gear on the power takeoff element drives a larger gear to withdraw power from the engine.

Abstract: A housing system for gas turbines, especially vehicle gas turbines, according to which in a main housing for a gas turbine there is detachably arranged a housing which includes a bell-shaped bearing housing section provided at its radially largest portion with a cast-on bearing wall, and a compressor housing section and a cover pertaining to the compressor housing section. This cover forms a partition between the compressor intake chamber and the transmission chamber in the bell-shaped bearing housing section. When viewing in the direction toward the bell-shaped bearing housing section, the cover is preceded by the compressor housing section, and the compressor housing section and the cover and the bearing housing section are successively and detachably connected to the main housing and coaxially guided and centered thereby.