Abstract: A method of manufacturing a gear wheel including a shaft and a tooth system. The method includes the steps of hardening and annealing the gear wheel, heating the gear wheel to an annealing temperature, spinning the gear wheel when the annealing temperature is reached, spinning the gear wheel while cooling the gear wheel and grinding the gear wheel to a final size. The method allows the manufacture of gear wheels having an increased service life.

Abstract: In a friction- and form-grip connection of rotating components (1, 2) which have different expansion behavior in the region of the connection during rotation, the form grip is effected via a stepped centering seat (3). The friction grip between the two components is effected by way of axially prestressed elements. At least one of the components has a cavity (6) in the interior, in which cavity (6) an insert ring (7), which exerts a radial force on the centering seat (3) during operation, is arranged. The prestressed insert ring (7) bears with only part of its axial extent against the component (1) interacting with it.

Abstract: A joint between a first and a second joint partner where each joint partner has at least one flat, cylindrical surface section via which force is applied to the other joint partner. The joint partners being brought into contact with one another in a sliding fashion such that the flat, cylindrical surface sections of the joint partners partially overlap and form a common bearing surface in the contact region. The flat, cylindrical surface sections of the joint partners are each bonded on one side by an undercut and the joint partners are joined such that the common bearing surface of the joint partners is bounded in one direction by the undercut of the first joint partner and in the opposite direction by the undercut of the second joint partner. This arrangement allows zones of maximum stress gradient to be shifted into the region of the undercut structures and for crack-opening, surface-parallel stresses to be substantially avoided.

Abstract: A method of controlling turbomachines is specified, a characteristic signal, in particular a performance signal, normally being fed to the controller as a controlled variable, but this performance signal, together with a number of further signals significant of the performance from the plant circuit, forming a signal set in a comparison and selection unit, and the signals from this signal set being compared with one another. The maximum selection among the signals, formed at the same time in the comparison and selection unit 2.1, yields the signal of the controlled variable that is forwarded to the controller 1.1. In addition, monitoring as to whether the performance signal is the maximum signal is performed. In addition, a device for controlling turbomachines according to the method is specified, which device has a control loop 1 for the output of actuating signals for control devices of the plant, the control loop 1 being preceded by a monitoring loop 2 that has a comparison and selection unit 2.

Abstract: An improved cableway system for providing a track over which a vehicle traverses. The improved system includes a catenary cable system and a pair of track cable systems. The track cable systems are hung from the catenary cable system and support tracks over which a vehicle traverses. A plurality of hangers is employed to suspend the track cable systems from the catenary cable system. A plurality of pylons support the catenary and track cable systems. A pylon includes a base pylon, a lower saddle, and an upper saddle. The lower saddle is pivotally mounted to the base pylon and supports the track cable systems. Preferred embodiments of the lower saddle include apparatuses that dampen the application of loads to the pylon by the vehicle traversing the system. The upper saddle is supported by the base pylon and supports the catenary cable system while providing for deflection of the catenary cable system in response to forces applied to the cableway system.

Abstract: According to the invention, turbine blades are provided that have increased functional reliability, which is achieved in that the interior space (8) of the blade body (3) in the region of the suction-side wall (4), the pressure-side wall (5) and the trailing blade edge (7) has a closed steam-cooling system (9) having at least one cooling passage (10, 27, 28). An open cooling system (11) having at least one cooling passage (14, 15) and a plurality of film-cooling holes (22) which pass through the blade body (3) is formed in the region of the leading blade edge (6).

Abstract: A gas-turbine blade of solid construction and having cooling passages is specified, which cooling passages run in its interior and through which the cooling medium flows essentially from the blade root through the gas-turbine blade (100), these cooling passages (20) having a relatively small cross section in relation to the blade thickness and being arranged so as to run close to the lateral surface (100.1) of the gas-turbine blade (100), and the cooling-medium feed and discharge being effected in the base (60) of the gas-turbine blade (100).

Abstract: In an arrangement for fixing blades (5) to a rotor (1) or stator, a number of slots (7) which run helically on the circumferential surface of the body to be fitted with blades are provided, filling pieces (6) which serve to space apart the blades (5) and fix the blades (5) in a frictional manner being present between individual blade rows (3).

Abstract: In the case of a method for tracing leaks in the closed or half-cooling system of a gas turbine installation, the parts of the gas turbine installation to be cooled being cooled by means of a cooling fluid (15) other than air, and the cooling fluid (15) flowing in a special cooling fluid circuit (16), and the leak in the cooling system leading to the cooling fluid (15), entering the hot gas channel of the gas turbine (3), samples are taken from the exhaust gas (10) from the gas turbine and concentration measurements, preferably of the cooling fluid (15), are carried out on these samples. The sample taking and concentration measurement may be carried out continuously or periodically. The concentration measurement results are passed to an alarm or a protection system (21) by means of which overheating of inadequately cooled parts of the turbine (3) is prevented.

Abstract: In a power plant which essentially comprises a compressor (2), a combustion chamber (4) and a turbine (7), an injector system (30) is provided in the region of an outlet diffuser (3) of the compressor (2). This injector system (30) comprises a ring of individual injectors (31) which are arranged on the inner circumference of the outlet diffuser (3). The propulsion nozzles of these injectors (31) are loaded with steam (10) from a waste-heat steam generator (9). The throughflow cross section of the outlet diffuser (3) at the same time forms the combining nozzle of the injectors (31).

Abstract: A baffle cooling arrangement for wall parts includes a wall having a wall part to be cooled, a carrier having an inner and an outer surface, the inner surface of the carrier being arranged at a distance from the wall part, and multiple baffle tubes are provided. The baffle tubes each have an inlet end and an outlet end. The inlet ends of the baffle tubes are arranged over an area on the outer surface of the carrier and the outlet ends of the baffle tubes are directed toward the wall part, the tubes extending into a space between the inner surface of the carrier and the wall part.

Abstract: In a power plant which consists essentially of a compressor (2), of a downstream combustion chamber (6) and of a turbine (8) acting downstream of the combustion chamber, a first injector system (5a) is provided in the region of the outlet diffusor (4) of the compressor (2). A second injector system (5b) acts upstream of a burner (100) of the combustion chamber (6). The driving nozzles of these injectors are loaded by steam (10, 10a) from a waste-heat steam generator (13). In the first injector system (5a), precompressed air from the compressor (2) flows into the catching nozzle; a liquid fuel (112) flows upstream of the burner (100) into the catching nozzle of the second injector system (5b).

Abstract: In a method of operating a gas turbine group (34) with or without integrated steam process (20) and with or without an air reservoir installation (20), a series connection with one and the same air mass flow (16, 17) is used for cooling one or more structures (15, 18, 19) which are in effective connection with the mass flow of the gas turbine group (34), the cooling air mass flow being extracted from a position which has a sufficiently low temperature.

Abstract: In a combined gas/steam power station plant which consists essentially of a fossil-fired gas turbine group and a steam circuit, with an exhaust heat boiler (11) in between, intercooling and reheat are provided to maximize the efficiency. The gas turbine group consists of two compressors (1, 2), of two combustion chambers (7, 9) and of two turbines (8, 10). Downstream of the first compressor (1), there is an intercooler (3) and on the cool side of this is placed an evaporator (4) which is in effective connection with the intercooler. The steam quantity formed in the evaporator (4) is introduced into a turbine (6) of the steam circuit, the result of this being a first improvement in efficiency. Downstream of the first turbine (8), there is a second combustion chamber (9) in which the exhaust gases from the first turbine (8) are processed to produce hot gases for the second turbine (10) .

Abstract: In a method for increasing the compressor-related pressure drop of the gas turbine (8) of a gas turbine group with a waste-heat steam generator (13) connected downstream, an injector (5), through the mixing nozzle of which the precompressed air (4) from the compressor (2) flows, acts directly upstream of the gas turbine (8). At least part of the steam (10) produced in the waste-heat steam generator (13) is admitted to the driving nozzle of the injector (5), as a result of which the compressor air (4) is further compressed without consumption of power from the yield of the gas turbine (8).

Abstract: In a power station installation which is designed as a combined installation, i.e. consists of a gas turbine group (2, 3, 4, 5, 6, 8) and of a steam cycle (13, 16, 17, 18, 19, 20) downstream of the gas turbine group, the steam rate being generated in a waste heat boiler (13) by heat exchange with the exit gases from the gas turbine (5), a heat exchanger (7), which is a component of a closed cycle, with a high-temperature reactor (12) as the heat source is placed downstream of the last compressor (4) of the gas turbine group and upstream of the combustion chamber (8). In this heat exchanger (7), the compressed air undergoes vigorous caloric processing before it flows into the downstream combustion chamber (8) in which the final caloric processing of the hot gases for charging the gas turbine (5) is accomplished. The essential point here is that the pollutant emissions of any type, in particular CO.sub.