Abstract: In a method for operating a power plant by means of a CO2 process, isentropic compression first takes place, subsequently an isobaric heat supply, then isentropic expansion, and finally isobaric heat discharge. The CO2 process broken down here takes place with internal combustion, a fuel (21) and the oxygen (18) necessary for oxidization being supplied. After the charging of the CO2 circuit (23) has been carried out, the excess CO2 formed from combustion is discharged continuously, in that this gas is led through a cooler (14), in which said gas is condensed. In order to dispose of this condensed CO2 (15), there are available here, for example, the possibilities of storing this CO2 on the ocean floor or of introducing the condensed CO2 into a worked-out deposit of natural gas.

Abstract: An improved cableway system for providing a track over which a vehicle traverses is disclosed. 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: A gas turbine system comprises a compressor that takes in suction air on the inlet side and compresses it to compressor end air that is available on the outlet side, a combustor in which a fuel is burned by using the compressor end air while resulting in the formation of hot gas, as well as a turbine in which the hot gas is expanded while providing work output. In a method for cooling this gas turbine system, compressed air is removed from the compressor, is fed as cooling air for cooling inside an internal cooling channel through thermally loaded components of the combustor and/or the turbine, is then compressed and added to the compressor end air. An improved cooling without disadvantage for the efficiency of the system is achieved in that, in the manner of a targeted leakage, a small part of the cooling air is fed for film cooling into the turbine stream through drilled film cooling openings provided on the components.

Abstract: In a method for the operation of a power plant with a closed or quasi-closed cycle, the power plant substantially comprises at least one compressor unit (1) or a pump, at least one combustion chamber (2), at least one turbine (3) and at least one heat sink (4). In the combustion chamber (2), a fuel mass flow (14) reacts with at least one oxygen flow (12), the excess combustion products which are formed as a result (CO2, H20) are removed from the cycle at a suitable location (5, 6), and the oxygen stream (12) fed to the combustion chamber is obtained by means of an air fractionation installation (11). Means (9) for coarse fractionation of the supplied air (8) are connected upstream of the air fractionation installation (11) in order to supply oxygen-enriched air (10) to the air fractionation installation (11).

Abstract: A rotor (10) for a turbomachine, comprising at least one first, preferably disk-like rotor section (12), which is exposed to high operating temperatures and consists of a particularly creep-resistant material, in particular a nickel-based alloy, and at least one second, preferably disk-like rotor section (11), which is exposed to lower operating temperatures and consists of a less creep-resistant material, in particular steel, the first and second rotor sections (11, 12) being joined to one another by welding. In a rotor of this type, a crack-free welded joint is achieved by the fact that, to join the two rotor sections (11, 12), a transition region (13) is arranged between the two rotor sections (11, 12), which transition region is produced by powder metallurgy, is welded to one of the two rotor sections (11, 12) at least on one side, and on this side has the same composition as the rotor section to which it is welded.

Abstract: Described is a fixation device for blading of a turbo-machine, in which, longitudinally to a mounting groove (1), a plurality of blades (31, 32) is positioned, and in which, between at least two blades (31, 32) positioned adjacent to each other inside the mounting groove (1), a mounting gap is provided, having two insertion elements constructed as collar halves (41, 42) that can be inserted into the mounting gap, and each of which has a width adapted to the width of the mounting gap and which enclose between themselves a gap space (5) into which a wedge element (43) can be inserted that can be wedged in such a way that both collar halves (41, 42) are fixed in a force-derived manner by means of the wedge element (43) inside the mounting groove (1).

Abstract: An improved cableway system for providing a track over which a vehicle traverses is disclosed. 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: A gas turbine system comprises a compressor that takes in suction air on the inlet side and compresses it to compressor end air that is available on the outlet side, a combustor in which a fuel is burned by using the compressor end air while resulting in the formation of hot gas, as well as a turbine in which the hot gas is expanded while providing work output. In a method for cooling this gas turbine system, compressed air is removed from the compressor, is fed as cooling air for cooling inside an internal cooling channel through thermally loaded components of the combustor and/or the turbine, is then recooled and subsequently compressed and added to the compressor end air. The influence of the cooling on the efficiency of the system is minimized by the fact that at least part of the compressor end air is used to recool the cooling air.

Abstract: A rotor (10) for a turbomachine, comprising at least one first, preferably disk-like rotor section (12), which is exposed to high operating temperatures and consists of a particularly creep-resistant material, in particular a nickel-based alloy, and at least one second, preferably disk-like rotor section (11), which is exposed to lower operating temperatures and consists of a less creep-resistant material, in particular steel, the first and second rotor sections (11, 12) being joined to one another by welding.

Abstract: A device is shown for fixing blades of a turbo-machine having a plurality of blades positioned longitudinally relative to a mounting groove. At least two blades are positioned adjacent to each other inside the mounting groove, and a mounting gap is defined between the blades. Two insertion elements constructed as collar halves can be inserted into the mounting gap, and each insertion element has a width adapted to the width of the mounting gap such that a gap space is defined between the insertion elements when they are inserted into the mounting gap. A wedge element can be inserted in the mounting gap to fix both collar halves inside the mounting groove. At least one connecting element is provided on the wedge element towards the side of a blade, and at least one of the two blades adjoining the wedge element is provided with a mating recess corresponding to the connecting element so that the wedge element and the blade are connected by a shape-mated connection.

Abstract: The present invention relates to a component of a flow machine, in particular a gas turbine, which has cooling channels (4) for a cooling medium and also at least one inspection aperture (5) through which an inspection of the interior of the component is made possible. The component is distinguished in that the inspection aperture (5) is arranged and dimensioned such that it simultaneously fulfills the function of a dust discharge aperture for dust or dirt particles contained in the cooling medium.

Abstract: A process for producing a casting core which is used for forming within a casting a cavity intended for cooling purposes, through which a cooling medium can be conducted, the casting core having surface regions in which there is incorporated in a specifically selective manner a surface roughness which transfers itself during the casting operation to surface regions enclosing the cavity and leads to an increase in the heat transfer between the cooling medium and the casting.

Abstract: In a method for initiating protective measures on rapidly running rotary machines upon the occurrence of impermissible vibrations, or other disturbances which cause vibrations, the vibrations are measured as measured variables essentially at the bearings of the rotors or derived values. In a first relatively long time interval (t1) a number of measured data of this measured variable are recorded and conditioned using an equalizing function. In a second, relatively short time interval (t2) the measured data of the same measured variable which are current in this time interval are recorded. Thereafter, these current measured data are compared with the conditioned measured data of the relatively long time interval (t1) and, depending on the result of the comparison, a monitoring signal corresponding the result, or an emergency shutdown signal is triggered.

Abstract: An improved cableway system for providing a track over which a vehicle traverses is disclosed. 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: In a method for operating a power plant by means of a CO2 process, isentropic compression first takes place, subsequently an isobaric heat supply, then isentropic expansion, and finally isobaric heat discharge. The CO2 process broken down here takes place with internal combustion, a fuel (21) and the oxygen (18) necessary for oxidization being supplied. After the charging of the CO2 circuit (23) has been carried out, the excess CO2 formed from combustion is discharged continuously, in that this gas is led through a cooler (14), in which said gas is condensed. In order to dispose of this condensed CO2 (15), there are available here, for example, the possibilities of storing this CO2 on the ocean floor or of introducing the condensed CO2 into a worked-out deposit of natural gas.

Abstract: An improved cableway system for providing a track over which a vehicle traverses is disclosed. 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: 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 means 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: An apparatus for the generation of energy by means of a fluid-flow machine is described, for the drive of which a compressor arrangement for compressing a compressible medium, preferably air, is provided, which medium, via a feed-line system, can be fed to the fluid-flow machine directly or after the interposition of a combustion chamber, in which the compressed medium can be ignited with the addition of fuel. The invention is distinguished by the fact that the compressor arrangement provides at least one compressor stage, in which the medium can be compressed isothermally.

Abstract: In a method of operating a power station plant with a closed or virtually closed CO2 process, a fuel quantity (21) and oxygen (18) required in this regard for the oxidation are introduced into the cycle for the internal combustion. A recuperator (8) acts on the downstream side of a turbine (2) belonging to the power station plant, at least one heat sink (24) operating downstream of this recuperator before the cycle medium (6) flows back into a compressor (1) which likewise belongs to the power station plant. A partial quantity of the compressed cycle medium (10) is directed into a condensing plant, the liquid CO2 formed here being disposed of in the best possible way.

Abstract: Turbomachine, in particular a compressor of a gas turbine, having rotor blades (11) and guide vanes (12), in which individual or all guide vanes (12) are configured as cooled vanes. The cooled vanes (12) have air guidance ducts (13) which emerge into outlet openings (14) in the region of the vane tips (15). Cooling air (K) is ejected through the outlet openings (14) and impinges at high velocity onto a rotor shaft (18). The cooling effect which can be achieved by this means is optimal and, in addition, leads to a raising of the compressor efficiency and the surge line.