Regulating system for reducing the effect of heat fluctuations on forced-flow steam boilers in power plants

Claim 1

IN A POWER PLANT COMPRISING A FORCED-FLOW STEAM GENERATOR HAVING A SUPERHEATER PORTION, A HIGH-PRESSURE LOAD CONNECTED TO SAID SUPERHEATER PORTION TO RECEIVE FRESH STEAM THEREFROM, AND AN INTERMEDIATE SUPERHEATER HAVING AN INPUT CONNECTED TO SAID HIGH-PRESSURE LOAD TO RECEIVE PARTLY UTILIZED STEAM THEREFROM, THE COMBINATION OF A SYSTEM FOR REGULATING THE STEAM GENERATOR TO COMPENSATE FOR CHANGES IN HEAT SUPPLY, COMPRISING A STEAM BRANCH LINE ADDITIONALLY CONNECTING THE INPUT OF SAID INTERMEDIATE SUPERHEATER WITH A TAP POINT OF SAID SUPERHEATER PORTION, SAID LINE HAVING CONTROL MEANS FOR VARYING THE SUPPLY OF STEAM FROM SAID TAP POINT TO SAID INTERMEDIATE SUPERHEATER, CONTROLLABLE WATER INJECTOR MEANS DISPOSED IN SAID SUPERHEATER PORTION, TEMPERATURE SENSOR MEANS IN SAID SUPERHEATER PORTION FOR PROVIDING SIGNALS SUBSTANTIALLY INDICATIVE OF THE FRESH STEAM TEMPERATURE, AND REGULATOR MEANS COMPRISING SAID SENSOR MEANS TO BE CONTROLLED BY SAID SIGNALS AND CONNECTED TO SAID INJECTOR MEANS AND SAID CONTROL MEANS FOR CONTROLLING BOTH TO MAINTAIN THE FRESH STEAM TEMPERATURE SUBSTANTIALLY CONSTANT WHILE VARYING THE POWER FURNISHED TO SAID HIGHPRESSURE LOAD.