Method of regulation of the water level in boilers or steam gene

Details Method of regulation of the water level in boilers or steam gene Method of regulation of the water level in boilers or steam gene

1979-05-11

1981-06-23

Ruggiero, Joseph F.

Boots, shoes, and leggings

60646, 60665, 176 24, 290 40C, 364504, G06F 1552, G06F 1546, G21C 700

Patent

active

042754470

ABSTRACT:
Method of regulation of the water level in boilers or steam generators, in which the inlet flow of feedwater is regulated in response to a deviation signal proportional to the difference between the real measured water level and a reference level, the proportionality factor being a linear function of the power level of the boiler with respect to the nominal power, modified by a non-linear function of .xi. which preserves very low values for .xi. close to zero and increases very rapidly for higher values of .xi. so that the total gain is increased for low power levels and high values of .xi. within a restricted range.

REFERENCES:
patent: 3837167 (1974-09-01), Durrant et al.
patent: 3931500 (1976-01-01), Berkebile et al.
patent: 4056331 (1977-11-01), Sato
patent: 4061533 (1977-12-01), Durrant
patent: 4120159 (1978-10-01), Matsumoto et al.

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