摘要:
A control system (100) and method utilizing one or more processors (110) that are configured to determine contaminant loading of blades (106) of a turbomachinery compressor (102) based on one or more environmental conditions to which the turbomachinery compressor (102) is exposed and one or more atmospheric air inlet conditions of the turbomachinery compressor (102). The one or more processors (110) then determine a corrosion contaminant concentration on the blades (106) of the turbomachinery compressor (102) based on the contaminant loading that is determined and determine an upper limit on or a distribution of potential corrosion of the blades (106) of the turbomachinery (102) based on the corrosion contaminant concentration, at least one of the environmental conditions to which the turbomachinery compressor (102) is exposed, and the corrosion contaminant concentration that is determined.
摘要:
The present invention refers to a system for controlling aircraft main engines cooling during starting operations. An aircraft incorporates a main engine and a pneumatic starter for starting the same, and a pneumatic source fluidly communicated with the pneumatic starter to supply pressurized air thereto. According to the invention, a control system is provided with a data chart containing predetermined pressure values of the pneumatic source, and said values corresponds to an ambient condition to obtain a desired rotating speed for the main engine for that ambient condition. The control system is adapted for controlling the pneumatic source air pressure output based on said data chart, to rotate the main engine within a predefined rotating speed range during cooling procedure. The invention provides a controlled reduced rotating speed during main engines cooling or cranking operation before starting main engines, in order to mitigate bowed rotor phenomenon.
摘要:
A system for warming up a steam turbine (38) includes a gas turbine (12) and a controller (50) operably connected to the gas turbine (12). The controller (50) is programmed to receive a plurality of measured input signals (52) and control the gas turbine (12) to produce an exhaust having a desired energy. A first measured input signal (54,56,58,60) is reflective of a measured operating parameter of the gas turbine (12) and a second measured input signal (62,64) is reflective of an operating parameter of the steam turbine. A method for warming up a steam turbine (38) includes sending a plurality of measured input signals (52) to a controller (50), wherein a first measured input signal (52) reflects a measured operating parameter of a gas turbine and a second measured input signal (62,64) reflects an operating parameter of the steam turbine. The method further includes controlling the gas turbine based on the plurality of measured input signals (52) and producing an exhaust from the gas turbine (12), wherein the exhaust has a desired energy.
摘要:
An engine strut (100) for providing fan hub frame structural support and monitoring an air flow (116) within an aircraft engine (100) includes an airfoil (120) coupled to the aircraft engine (100) and has a first portion (122) and a second portion (124). The first portion (122) is positioned upstream of the second portion (124) with respect to the air flow. A shield (126) is coupled to the engine (100) and positioned between the first portion (122) and the second portion (124). The shield (126) includes a first side (128) spaced from the first portion (122) and defining a first flow path (164) with the first portion (122). The shield further (126) includes a second side (130) spaced from the second portion (124) and defining a second flow path (169) with the second portion (124). At least one sensor (182) is coupled to the aircraft engine (100) and positioned in flow communication with the second flow path (169).
摘要:
Provided are a combustor control method and a combustor controller capable of calculating the combustion air flow and the fuel flow in multi-shafts gas turbine with high precision and without the need of performing complicated calculations and thereby calculating a fuel-air ratio necessary for stable combustion control. The multi-shaft gas turbine is made up of a gas generator turbine 110 and a power turbine 120. A combustor 114 includes a diffusive combustion unit F1 and a plurality of premixed combustion units F21 - F24. An ignition/extinction control unit 220 of the combustor control device calculates the combustion air flow supplied to the combustor 114 based on the open position of compressor inlet guide vanes 112A attached to the gas generator turbine 110, revolution speed of the gas generator turbine 110 and compressor inlet temperature, calculates the flow of fuel supplied to the combustor 114 based on revolution speed of the power turbine 120, and calculates the fuel-air ratio in real time as flame reference based on the calculated combustion air flow and fuel flow.
摘要:
A system and method of operating an engine anti-ice system includes supplying heat from one or more heat sources to one or more components on or within a gas turbine engine, sensing data representative of one or more parameters related to ice crystal accretion, and based on the data, at least selectively inhibiting at least selected ones of the one or more heat sources from supplying heat to at least selected ones of the one or more components on or within the gas turbine engine.
摘要:
A method of protecting fuel hardware for a gas turbine engine in an aircraft is disclosed. The method may include determining a current altitude of the aircraft, and controlling a temperature of fuel for the gas turbine engine based at least in part on the current altitude. A thermal management system for a gas turbine engine in an aircraft is also disclosed. The thermal management system may include a sensor configured to detect a current altitude of the aircraft, and a controller in operative communication with the sensor. The controller may be configured to manage a fuel temperature for the gas turbine engine based at least in part on the current altitude detected by the sensor.
摘要:
A gas turbine system (1) includes a compressor protection subsystem (5); a hibernation mode subsystem (7); and a control subsystem (1) that controls the compressor subsystem (5) and the hibernation subsystem (7). At partial loads on the turbine system (1), the compressor protection subsystem (5) maintains an air flow through a compressor (13) at an airflow coefficient for the partial load above a minimum flow rate coefficient where aeromechanical stresses occur in the compressor (13). The air fuel ratio in a combustor (15) is maintained where exhaust gas emission components from the turbine (17)are maintained below a predetermined component emission level while operating at partial loads.