Turbo set
In power plant technology, a turbine set is a rapidly rotating machine set for the actual generation of electricity. Such a turbine set usually consists of
- a turbine ( steam or gas turbine ) as the engine and
- an electric turbo generator as a working machine ,
whose shafts are coupled without an intermediate gear (only often with a coupling as a damping element and predetermined breaking point in the event of an accident ). In the case of combined cycle power plants in a single-shaft arrangement, the gas turbine is also part of the turbine set. In the case of a multi-shaft arrangement, however, each gas and steam turbine each form a turbo set with its own turbo generator.
The term turbine generator or machine set may more generally to other combinations of a turbine engine with a working machine to be used, such as a turbo pump or a turbo compressor , for example as exhaust gas turbocharger , or for large-scale refrigeration machines or heat pumps .
In contrast , the term turbo set is not used for slow- running water turbines or wind turbines , whose power generators are usually of the salient pole design .
General
The inventor is the Briton Charles Parsons , who combined the Parsons turbine named after him with a generator in the 1880s . For the first time, turbo sets were used in the Forth Banks Power Station in Newcastle upon Tyne .
The terms turbogenerator and turbogenerator originally arose in opposition to the then very slowly rotating piston steam engines (typically 150 / min). Turbo generators are usually two-pole (3000 / min or 3600 / min), with very large power plant sets also four-pole (1500 / min or 1800 / min). The rotors of turbo generators are full pole rotors , which are usually made of a solid piece of steel due to the centrifugal forces that occur during operation.
In older turbo sets, there are also coupled excitation machines that deliver the direct current to build up the magnetic field in the pole wheel . Nowadays this is mostly done via rectifiers in static excitation devices .
Web links
Individual evidence
- ^ RH Parsons: The Early Days of the Power Station Industry . In: The Journal of Economic History . Vol. 2. Cambridge University Press, 1942, pp. 107-108 (Series 1).