Abstract: Self-excited vibrations can occur in the combustion chambers of gas turbines, which vibrations are due to modulation of the quantity of gaseous fuel or fuel/air mixture as the fuel is injected through a nozzle and into the combustion chamber. The modulation results from pressure fluctuations that occur in the plane of the nozzle. The new fuel lance simultaneously permits both de-coupling of the fuel line in order to avoid combustion chamber vibrations and the possibility of fuel quantity control. The fuel lance comprises an adjustable throttle body that is provided with fuel passage openings and a plunger, the penetration depth of which plunger relative to that of the throttle body is a measure of the fuel quantity flowing therethrough.

Abstract: Rotary flows are generated in a variety of technical installations.In these uses, the particular properties of the rotary flows generated and consequently those of the swirl generator itself play an essential part. Thus, for example in burner construction, a swirl is imparted to the combustion air, in order, on the one hand, to accelerate mixing between the fuel and air and, on the other hand, to utilize a possible return flow to improve the ignition condition.One question, among others relating to the design of the swirl generator, is to decide which flames with which properties are produced by the burner.It is therefore desirable, for control and optimization of the flame properties, to have available a swirl body of variable swirl intensity and swirl distribution.For this purpose, the swirl body (1) is equipped with several exchangeable guide blades (4) which are pushed in through a slotted outer tube (2) radially and at a pitch angle (.theta.).

Abstract: A pressure exchanger, preferably usable as a high-pressure compressor for gas turbine installations, has a multiplicity of coaxial cell rotors which can be driven in the same direction, and a central pressure exchanger combustion chamber located within the innermost cell rotor. Driving gases generated in the combustion chamber flow through the cell rotors in series from inside to outside and can be expanded as low pressure driving gases in the low pressure part of the turbine. The air to be compressed flows through the cell rotors in series from the outermost cell rotor towards the inside. A part of the air mass flow compressed to the final pressure, which part is greater than the driving gas mass flow, arrives as combustion air in the pressure exchanger combustion chamber; the other part of the air can be used as combustion air for a turbine combustion chamber, which generates high pressure driving gas for the gas turbine.