Liquid heaters and vaporizers – Circulation – With start-up operations
Patent
1985-07-15
1987-01-20
Makay, Albert J.
Liquid heaters and vaporizers
Circulation
With start-up operations
122448R, 1224512, 122452, 122479R, 236 14, F22B 3504
Patent
active
046373489
ABSTRACT:
An apparatus for controlling a starting operation of a boiler which comprises a super heater, a super heater bypass valve, a turbine bypass valve and a fuel flow rate regulating valve. A temperature detector detects a temperature of the steam at a predetermined portion of the boiler. A pressure detector detect a pressure of the steam at the predetermined portion of the boiler. A desired change rate arithmetic unit calculates a desired steam temperature change rate value and a desired steam pressure change rate value on the basis of the steam pressure, the steam temperature, a desired pressure increase value, a desired temperature increase value, a saturated temperature change rate limit and a temperature increase change rate limit. An optimum operation arithmetic unit calculates opening degrees of the super heater bypassing valve, turbine bypass bypass valve and the fuel flow rate regulating valve, respectively, on the basis of the steam temperature, the steam pressure, the desired steam pressure change rate value and the desired steam temperature change rate value obtained by the desired change rate arithmetic unit. A compensation arithmetic unit compensates for the respective opening degrees obtained by the optimum operation arithmetic unit, on the basis of the change rates of the steam temperature and pressure.
REFERENCES:
patent: 3828737 (1974-08-01), Fujii et al.
patent: 3877636 (1975-04-01), Sato
patent: 3908897 (1975-09-01), van Holtz et al.
patent: 4031863 (1977-06-01), Laubli
patent: 4144846 (1979-03-01), Miszak
patent: 4241701 (1980-12-01), Morse
patent: 4262636 (1981-04-01), Augsberger
Babcock-Hitachi Kabushiki Kaisha
Makay Albert J.
Warner Steven E.
LandOfFree
Apparatus for controlling starting operation of boiler does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for controlling starting operation of boiler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling starting operation of boiler will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2129566