METHOD FOR SHORTENING THE START-UP PROCESS OF A STEAM TURBINE

• Main Authors: DREES, Sven, STAWARSKI, Oliver, HOGEN, Tobias, STIEHM, Andreas, BEUL, Ulrich, KOSTENKO, Yevgen, LIEDTKE, Daniel, ZAHN, Sebastian
• Format: Patent
• Language: English; French; German
• Published: 28.06.2017
• Subjects: BLASTING; CYLINDERS; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINEERING ELEMENTS AND UNITS; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PISTONS; SEALINGS; STEAM ACCUMULATORS; STEAM ENGINE PLANTS; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

A method for shortening the start-up process of a steam turbine is provided which has a turbine housing and turbine components which are provided inside the turbine housing. The turbine components during operation come into contact with hot steam which flows through the turbine housing and include a turbine shaft which passes axially through the turbine housing. Sealing regions, which during operation of the steam turbine are acted upon by seal steam, are formed between the turbine shaft and the turbine housing. Thermal energy is fed to the steam turbine during a shutdown of said steam turbine, wherein seal steam is fed to the interior of the turbine housing during the shutdown of the steam turbine in order to heat and/or to keep warm the turbine components which are provided in the interior of the turbine housing.