METHOD FOR CONTROLLING TEMPERATURE OF MAIN STEAM FROM BOILER

METHOD FOR CONTROLLING TEMPERATURE OF MAIN STEAM FROM BOILER

PURPOSE:To anticipate a change in the temperature of the main steam resulting from an excess or deficiency in quantity of the fuel during change of the load on a boiler plant so as to improve the controllability of the temperature of the main steam. CONSTITUTION:From an excess or deficiency in quant...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KOMADA TADASHI, KAMINAGA EIICHI
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
METHODS OF STEAM GENERATION
STEAM BOILERS
STEAM GENERATION
SUPERHEATING OF STEAM
WEAPONS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PURPOSE:To anticipate a change in the temperature of the main steam resulting from an excess or deficiency in quantity of the fuel during change of the load on a boiler plant so as to improve the controllability of the temperature of the main steam. CONSTITUTION:From an excess or deficiency in quantity of the fuel during change of the load expressed as fuel (difference of (static characteristic of fuel = flow-rate of fuel)) a corrected value of the temperature at the outlet of a desuperheater is calculated by the following equation and added to the control system of main-steam temperature ( Tat is calculated by operators 501, 502, 503, and 504): 'Tat=f2 (MW) fuel wherein Tat is a corrected value of the temperature at the outlet of the desuperheater and f2 (MW), an enumeration function to Tat based on the load to an excess or deficiency in unit quantity of fuel. Therefore, change of the temperature of the main steam which is due to increase or decrease of the fuel during increase or decrease of the load is suppressed and the controllability of the temperature of the main steam is improved.