摘要:
A method for determining an estimated operating parameter for a gas turbine including the steps of: determining an estimated operating parameter using an algorithm have an input from a sensor, wherein the algorithm includes a trim factor; determining a first trim factor based on a comparison of the first estimated operating parameter and the output of the sensor when a condition of the sensor is in a first mode, and during a subsequent determination of the estimated operating parameter, applying the first trim factor to subsequently determine the estimated operating condition if the condition of second sensor is in a second mode.
摘要:
A gas control valve includes a first element, a second element, a mediate element, a sleeve, a rod and a control element. The first element defines a first path. The second element defines a second path and a hole in communication with the second path. The mediate clement defines a passage. The mediate clement is sandwiched between the first and second elements so that the first path is in communication with the second path through the passage. The sleeve includes a first end and a second end. The first end of the sleeve is inserted into the hole. The rod includes a first and a second end. The rod is inserted into the sleeve so that the first end of the rod is inserted into the second path and that the second end of the rod is exposed through the second end of the sleeve. The control element is connected between the second end of the sleeve and the second end of rod. Normally, the control element keeps the rod in a first position wherein the first end of the rod opens the passage. When subjected to heat, the control element moves the rod to a second position wherein the first end of the rod closes the passage.
摘要:
A control system for gas burners operating on a.c. power in which a first circuit including a normally open relay and the heater for a thermal time switch is completed through a normally conducting SCR and a space thermostat and a second circuit including an igniter, a normally closed solenoid fuel valve, and the thermal time switch is completed through the relay contacts and the thermostat. A normally conducting transistor is operative to shunt the gating of the SCR and effect its cutoff, but a capacitor charged through a diode and a high resistance when the thermostat closes cuts off transistor conduction, whereby the SCR conducts. When combustion occurs, the capacitor discharges through burner flame, whereby the transistor again conducts and SCR conduction is cut off. A holding circuit completed through the thermal time switch maintains the solenoid fuel valve open when burner flame appears, but operation of the igniter is cut off.