摘要:
Method for controlling a plural stage compressor comprising at least a first stage (10), a second stage (20) and a first inter-stage line (12) between the first stage (10) and the second stage (20), comprising the steps of: a- measuring the temperature at the inlet of the compressor, b- measuring the ratio between the outlet pressure (Pout) and the inlet pressure (Pin) of the first stage (10) of the compressor, c- calculating a coefficient (Ψ) based at least on the value of the inlet temperature (Tin) and on the measured pressure ratio (Pout/Pin), d- if the calculated coefficient (Ψ)is in a predetermined range, acting on a control valve (70; 76; 92) mounted in a line (4; 8) supplying the inlet of the first stage (10) of the compressor or in a gas recycle line (74) which opens into the first inter-stage line (12).
摘要:
A gas turbine system, and a control apparatus (100) and method thereof, can control the amount of compressed air supplied to each of a combustor and an anti-icing unit (70) in order to improve the droop control performance of the gas turbine system. The control apparatus of the gas turbine system may include a sensing unit (110) to measure a rotor speed of the turbine; and a compressed air distribution unit (120) to adjust a distribution ratio of the compressed air supplied to the combustor to the compressed air supplied to the anti-icing unit, based on the measured rotor speed. The control apparatus can increase the amount of compressed air supplied to the combustor even though the revolution number of the turbine connected with a system frequency may be significantly lowered.
摘要:
A case cooling calibration system for a gas turbine engine comprises a rotor casing, and a rotor stage, rotatably mounted within the rotor casing. The rotor casing comprises in series fluid communication, a duct, a flow control valve, and a manifold. The valve is operable to regulate an air flow through the duct to the manifold, with the manifold arranged radially outwardly around the casing radially coplanar with the rotor stage. A temperature sensing apparatus is positioned on the rotor casing, radially outwardly of the rotor stage. A controller is operable to regulate the valve in a stepwise manner to provide a variable cooling air flow to the rotor casing. A processor is operable to calculate a correction characteristic in dependence on a comparison between the rotor casing temperature and a predicted rotor casing temperature for a given engine power condition. An engine controller is operable to control the valve in dependence on the correction characteristic to maintain a predetermined operational radial clearance between the rotor stage and the rotor casing.
摘要:
A method for diagnosing the function of an anti-ice/start bleed valve (AISBV) includes determining an operating mode of an engine and retrieving current engine system data associated with the operating mode. The method includes indicating whether the AISBV is functioning properly based on the current engine system data. An AISBV assessment system includes an AISB V assessment module configured to be operatively connected to a plurality of sensors. The AISBV assessment module includes a processor operatively connected to a memory, wherein the memory includes instructions recorded thereon that, when read by the processor, cause the processor to determine an operating mode of an engine, retrieve current engine system data associated with the operating mode, and indicate whether an AISBV is functioning properly based on the current engine system data.
摘要:
A thermally actuated assembly (10) for a gas turbine assembly for a gas turbine system includes a heat transfer component (20) having a first portion (22) and a second portion (24), wherein the first portion (22) is disposed within a first cavity (14) having a first temperature and the second portion (24) is disposed in a second cavity (16) having a second temperature, wherein the heat transfer component (20) extends through a cavity wall, wherein the first temperature is greater than the second temperature. Also included is a temperature sensitive element (26) disposed within the second cavity (16) and in operable communication with the heat transfer component (20). Further included is a flow manipulating device (30,32) disposed within the second cavity (16) and configured to displace in response to a temperature change in the first cavity (14).
摘要:
A system 50 for predicting performance of a liquid fuel system includes a processor 58 and a memory 60 communicatively coupled to the processor, wherein the memory stores instructions which when executed by the processor perform operations. The operations include establishing a baseline parameter for at least one physical parameter of a nozzle or a valve associated with at least one combustor of the liquid fuel system 16 with at least one time. The operations also include obtaining one or more operational parameters associated with the liquid fuel system from one or more sensors 62 during operation of a gas turbine engine 22. The operations further include utilizing an operational model of a fuel flow divider to output an action associated with the liquid fuel system based at least on the baseline parameter and the one or more operational parameters.
摘要:
The present application provides a method of evaluating inspection intervals in a turbine (100) by a data acquisition system (710). The method may include the steps of receiving a number of operating parameters from a number of sensors (380), wherein the operating parameters may include steam pressure, steam temperature, metal temperature, and valve spindle position, comparing one or more of the operating parameters to predetermined values, and shortening an inspection interval if the one or more of the operating parameters exceed the predetermined values for longer than a predetermined duration.
摘要:
A pressure and temperature actuation system is provided having a high-temperature low-pressure zone, a low-temperature high-pressure zone, a boundary, a pressure actuated mechanism, and a temperature mechanism. A gas located in the high-temperature low-pressure zone has a greater gas temperature than the gas located in the low-temperature high-pressure zone. The gas located in the low-temperature high-pressure zone has a greater gas pressure than the gas located in the high-temperature low-pressure zone. The boundary separates the high-temperature low-pressure zone from the low-temperature high pressure zone. The pressure actuated mechanism is located within the boundary and is configured for opening at a specified gas pressure in either the high-temperature low-pressure zone or the low-temperature high-pressure zone. The temperature actuated mechanism is located within the boundary and is configured for opening at a specified gas temperature in either the high-temperature low-pressure zone or the low-temperature high-pressure zone.
摘要:
In a method for the low-CO emissions part load operation of a gas turbine with sequential combustion, the opening of the row of variable compressor inlet guide vanes (14) is controlled depending on the temperatures of the operative burners (9) of the second combustor (15) and simultaneously the number of operative burners is kept at a minimum. This leads to low CO emissions at partial load of the gas turbine.
摘要:
A system for controlling thermal comfort in a space is provided with a variable mode of operation. The system may include a conditioner for conditioning air in the space, and a sensor for measuring a temperature in the space. A controller is provided for controlling the conditioner based on the temperature sensed by the sensor, and a fan for circulating air within the space is regulated based on the temperature sensed by the sensor. A related system for controlling a fan based on height is also provided, as is a system and method for easily and efficiently determining the height of a fan using a simple camera, such as one on a “smart” phone. A further aspect pertains to a controller, such as for example a portable handheld device, having a user interface adapted for suggesting an increase in a set point temperature of a thermostat based on the selected speed of the fan.