Method for coupling a steam turbine and a gas turbine at a desired differential angle
AssigneeSiemens Aktiengesellschaft
InventorGerta Zimmer
Life of this patent
Estimating the term…
Abstract
A method and an associated arrangement for coupling a rotational device, particularly a steam turbine, and a shaft device, particularly a gas turbine, includes the following steps: 1) accelerating the rotational device up to an output rotational speed that is below the rotational speed of the shaft device; 2) detecting a differential angle between the shaft device and the rotational device; and 3) accelerating the rotational device with an acceleration value that is derived from the target rotational speed difference, which is formed as a function of the detected differential angle, the acceleration and a desired target coupling angle.
Claims17
A method for coupling a rotational device and a shaft device comprising:
- accelerating the rotational device at an initial acceleration value up to an initial rotational speed which lies below a rotational speed of the shaft device;
- detecting a differential angle between the shaft device and the rotational device upon reaching the initial rotational speed;
- selecting a setpoint rotational speed difference which is a difference between a setpoint rotational speed of the rotational device and a rotational speed of the shaft device when the coupling is to initiate;
- accelerating the rotational device to the setpoint rotational speed with a second acceleration value, wherein the second acceleration value is formed depending on the detected differential angle, a rotational speed difference between the initial rotational speed and the setpoint rotational speed, and a desired target coupling angle.
An arrangement comprising
- a shaft device,
- a rotational device,
- a coupling for coupling the shaft device and the rotational device,
- a detection device for detecting a differential angle between the shaft device and the rotational device;
- an accelerating device for accelerating the rotational device by an acceleration value;
- and
- a controller adapted to:
- accelerate the rotational device at an initial acceleration value up to an initial rotational speed which lies below a rotational speed of the shaft device;
- detect the differential angle at the initial rotational speed;
- select a setpoint rotational speed difference, which is a difference between a setpoint rotational speed of the rotational device and a rotational speed of the shaft device when the coupling is to initiate;
- and
- achieve a desired target coupling angle between the shaft device and the rotational device by accelerating the rotational device to the setpoint rotational speed with a second acceleration value formed as a function of the detected differential angle, a rotational speed difference between the initial rotational speed and the setpoint rotational speed, and the desired target coupling angle.
Dependencies are inferred from the claim text.