Method for warming-up a steam turbine

Details Method for warming-up a steam turbine Method for warming-up a steam turbine

F - Mech Eng,Light,Heat,Weapons

01

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F01K 7/18 (2006.01) F01D 25/10 (2006.01) F01K 7/20 (2006.01) F01K 7/22 (2006.01) F01K 7/24 (2006.01) F01K 13/02 (2006.01)

Patent

CA 2625464

The invention relates to a method for heating a steam turbine (1) comprising a high-pressure turbine section (2) and a medium-pressure turbine section (3) and/or a low-pressure turbine section (4). Said method is characterized by the essential aspect that the high-pressure turbine section (2) is impinged upon by steam having relatively great conductivity while the medium-pressure turbine section (3) or the low-pressure turbine section (4) remains closed during said impingement following a cold start. As soon as the conductivity drops below a certain value, the medium-pressure turbine section (3) or the low-pressure turbine section (4) is also impinged upon by steam.

L'invention concerne un procédé pour chauffer une turbine à vapeur (1) qui comprend une première turbine haute pression (2) et une deuxième turbine moyenne pression (3) et/ou basse pression (4). L'invention est caractérisée en ce que la première turbine haute pression (2), après un démarrage à froid, est alimentée en vapeur à conductibilité comparativement élevée, la deuxième turbine moyenne pression (3) et/ou basse pression (4) restant fermée pendant cette alimentation. Dès que la conductibilité tombe en-dessous d'une valeur déterminée, la deuxième turbine moyenne pression (3) et/ou basse pression (4) est alors également alimentée en vapeur.

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