Siemens Aktiengesellschaft

Kraftwerk Union Aktiengesellschaft

Mtu Motoren-und Turbinen-union Munchen Gmbh

Wolfram Krockow

Helmut Maghon

Josef Huller

Nikolaos Kefalas

A method is disclosed for removing a seal that is fixed in a groove of a component. A highly pressurised jet of liquid is aimed at the seal or between the seal to free it from the groove. The method is particularly suitable for freeing a sealing strip in a rotor or in a housing of a turbine-type machine, and is considerably less time-consuming and expensive than the twisting-off method that has been used up until now.

Method for removing a seal

A gas turbine combustion chamber, includes a common spherical purely mixing chamber having inlet openings and an outlet opening formed therein and being otherwise closed, the mixing chamber having a hemispherical end zone and a spherical segment zone disposed between the hemispherical end zone and the outlet opening, the inlet openings being formed in the hemispherical and spherical segment zones, a multiplicity of primary combustion chambers each being adjacent a respective one of the inlet openings for discharging into the mixing chamber, each of the primary combustion chambers having a respective longitudinal axis coinciding at least substantially at the center of the mixing chamber, a separate air supply and a separate fuel feed for each respective primary combustion chamber, the fuel feeds being switchable on and off in dependence on the load of the gas turbine.

Gas turbine combustion chamber

Burner system for gas turbine combustion chambers having a pre-mixing burner with an integrated diffusion burner, where: the pre-mixing burner has a pre-mixing chamber bounded at the downstream end by a flame retention baffle, into which chamber a main fuel nozzle and a feeding device for combustion air open; the diffusion burner has a pilot fuel nozzle arranged in the central region of the flame retention baffle; and where a fuel control device controls the total amount and the partial amounts of the fuel fed to the main fuel nozzle and the pilot fuel nozzle as a function of the load of the gas turbine such that the diffusion burner can be operated exclusively until the idling speed or a small partial load is reached, and thereafter the diffusion burner and the pre-mixing burner can be operated together, characterized especially by the fact that the entire combustion air required for the operation of the diffusion burner can be fed-in exclusively via the pre-mixing chamber, and that the fuel control device controls the total amount and the partial amounts of the fuel supplied such that the pre-mixing burner can be operated exclusively in the upper load range.

Pre-mixing burner with integrated diffusion burner

A gas turbine power plant, such as a gas turbine engine for a motor vehicle, having a gas turbine, a combustor for producing hot gas to drive the turbine, and an air compressor for furnishing compressed air to the combustor. A heat exchanger, such as a rotary regenerator or a cross-flow recuperator, is located between the air compressor and the combustor for heating air by exhaust gas from the turbine before the air enters the combustor. The air leaving the exit of the heat exchanger decreases in temperature in a direction from one end of the exit to the other. A plurality of separate ducts conduct air from successive areas along the length of the heat exchanger exit to corresponding successive regions along the length of the combustor, the air temperature being lower in each succeeding duct. The lowest temperature air is conducted to the region containing a forward portion, e.g., the head, of the combustor, and air of progressively higher temperature being ducted to successive regions closer to the exhaust end of the combustor.

Growing community of inventors

Dusseldorf, Germany

Wolfram Krockow