Abstract: Method of minimizing the gap between a wheel and a casing of a turbine, a turbine, and a method of determining the wear behavior of a wheel of a rotor. To minimize the gap between a wheel and a casing in a turbine, optical methods are also often used in order to minimize the gap. However, this is very expensive. The method according to the invention proposes that the wheel and the casing (be part of an electric circuit, so that an electrical parameter, such as resistance for example, can be measured, the value of which shows whether a contact is present.

Abstract: Method of minimizing the gap between a wheel and a casing of a turbine, a turbine, and a method of determining the wear behavior of a wheel of a rotor. To minimize the gap between a wheel and a casing in a turbine, optical methods are also often used in order to minimize the gap. However, this is very expensive. The method according to the invention proposes that the wheel and the casing (be part of an electric circuit, so that an electrical parameter, such as resistance for example, can be measured, the value of which shows whether a contact is present.

Abstract: A gas turbine includes a first turbine stage having a first guide blade, a first moving blade and a cooling configuration. The cooling configuration has a first cooling-air feed at the first guide blade for cooling the first guide blade, a first cooling-air supply at a first pressure for supplying the first cooling-air feed, and a second cooling-air feed disposed downstream of the first cooling-air feed for cooling the first guide blade. The second cooling-air feed is supplied with a second pressure lower than the first pressure.

Abstract: A sealing element seals a gap which may be formed between two components that are movable thermally relative to one another. Each component has a component groove located one opposite the other. The sealing element is directed along a center line, in a cross-section essentially perpendicular to a main line, and has a first end, a second end located opposite the first end and a toothed middle region located between the ends. The sealing element is suitable in particular for sealing off a gap between guide blades at high temperatures in a gas turbine plant for the purpose of preventing a gas flow out of a cooling-gas region into a hot-gas region. A gas turbine plant is provided with the sealing element for sealing the gap.