F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 9/16 (2006.01) F01D 17/02 (2006.01) F01K 13/02 (2006.01)
Patent
CA 2368959
Method for closed-loop control of a steam turbine with a steam bleed, a closed-loop control device for a steam turbine with a steam bleed, and a steam turbine with a steam bleed The invention relates to a method for closed- loop control of a steam turbine (1) with a steam bleed (21, 23) for various operational tasks (BA, BB, BC), which are each characterized by the nature of the controlled variables (R1, R2) used for closed-loop control. Actuating signals (S1, S2, S3) for actuating elements (43, 45) for valves (15, 17, 19, 25, 27) are derived, using a closed-loop control structure (37), from closed-loop control signals (YE, YS) of the regulators (33, 35) which are used. Only a single closed-loop control structure (37) is used for all the operational tasks (BA, BB, BC), as a result of which the design of the closed-loop control is simplified, the closed-loop control signals (YE, YS) are decoupled, and a smooth changeover is achieved between the operational tasks (BA, BB, BC).
L'invention concerne un procédé de régulation d'une turbine à vapeur (1) à soutirage de vapeur (21, 23) en considérant différentes fonctions de service (BA, BB, BC) caractérisées chacune par la nature des paramètres R1, R2) à prendre en ligne de compte pour la régulation. A partir de signaux de réglage (YE, YS) du régulateur utilisé (33, 35), on déduit, au moyen d'une structure de régulation (37), des signaux de réglage (S1, S2, S3) pour un organe de réglage (43, 45) de vannes (15, 17, 19, 25, 27). On utilise une seule structure de réglage (37) pour toutes les fonctions d'exploitation (BA, BB, BC), ce qui simplifie la conception de la régulation et permet d'obtenir une commutation progressive entre lesdites fonctions d'exploitation (BA, BB, BC).
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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