Regulating system for steam power plants with forced-flow boilers

Claim 1

IN A STEAM POWER PLANT COMPRISING A FORCED-FLOW BOILER HAVING A FIRING SYSTEM AND A ONCE-THROUGH FLOW SYSTEM FOR WORKING MEDIUM TO BE EVAPORATED AND SUPERHEATED, THE COMBINATION OF A REGULATING SYSTEM FOR REGULATING THE SUPPLY OF WORKING MEDIUM IN ACCORDANCE WITH THE STEAM OUTPUT REQUIRED BY VARYING OPERATING CONDITIONS OF THE PLANT, SAID REGULATING SYSTEM COMPRISING FIRST CONTROL MEANS CONNECTED WITH SAID FIRING SYSTEM FOR CONTROLLING THE HEAT SUPPLY OF THE BOILER, SECOND CONTROL MEANS OPERABLE INDEPENDENTLY OF SAID FIRST CONTROL MEANS AND CONNECTED WITH SAID FLOW SYSTEM FOR CONTROLLING THE SUPPLY OF WORKING MEDIUM TO THE BOILER, A COMPARATOR CONNECTED TO SAID FIRST AND SECOND CONTROL MEANS FOR CONTROLLING THEM IN DEPENDENCE UPON A FIRST PILOT MAGNITUDE INDICATIVE OF THE LIQUID QUANTITY TO BE EVAPORATED AND UPON A SECOND PILOT MAGNITUDE INDICATIVE OF THE GENERATED STEAM FLOW QUANTITY, AND PILOT MEANS CONNECTED TO SAID COMPARATOR FOR FURNISHING SAID SECOND MAGNITUDE, SAID PILOT MEANS BEING INDEPENDENT OF THE STEAM FLOW OF SAID BOILER AND HAVING LOAD-CONDITION RESPONSIVE MEANS FOR INDIRECTLY SIMULATING THE AMOUNT OF STEAM QUANTITY.