| 摘要 |
PROBLEM TO BE SOLVED: To change values of a fire temperature, a member temperature distribution and thermal stress to operation program values in which a plant output is made maximum by predicting the fire temperature from information on input/output quantity of heat of a combustor, predicting the member temperature distribution of the combustor based on this information and calculating thermal stress generated in the members. SOLUTION: After an enthalpy rate of change of combustion gas which is subtracted from total input quantity of heat and output quantity of heat and subtracts information from a flow meter 16 from total input flow rate by integrators 22, 23, the enthalpy rate of change is divided by a value setting volume of a combustor by a divider 31, a rate of change of combustion gas density is determined by an integrator 32 and a fire temperature is calculated by outputs of the integrators 23, 32. In signals from a fire temperature computing element 24, temperature and pressure meters 11, 12 and a fuel air ratio computing element 39, a peripheral direction temperature gradient value in a heat stress computing element 33 is calculated as a stress integrated value applied to a member during operation time in an integrator 34, a difference with a constant setting device 35 is outputted by a subtracter 36 and whether the difference is within an allowable range or not is evaluated by a deciding device 37. When the difference does not exceed, information on a new operating state is outputted to a display device 19. |
