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Method for automatic positioning of gas turbine rotors

A technology for gas turbines and rotors, applied in position/direction control, engine components, machines/engines, etc., can solve problems such as expensive, unable to provide rotor speed variable speed control, and inaccurate

Active Publication Date: 2016-01-20
ANSALDO ENERGIA IP UK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the system is not accurate and also requires human effort, making it expensive and time-consuming
Additionally, the system does not provide variable speed control of rotor speed for accurate bore surface inspection in gas turbines

Method used

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  • Method for automatic positioning of gas turbine rotors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The invention relates to a method for positioning a rotor 2 of a gas turbine 1 in an accurate and automatic manner by means of:

[0027] - a feedback loop comprising a key phaser 40 and an incremental counter 50;

[0028] - frequency converter 60;

[0029] - rotor turning actuator 10;

[0030] - HMI (Human Machine Interface) 30, and

[0031] - a control unit 20 .

[0032] Feedback loop (key phaser 40 and incremental counter 50)

[0033] A key phaser 40 combined with an incremental counter 50 is used as feedback for the control unit 20 .

[0034] The phaser 40 generally comprises a sensor which, through cogs placed on the cam for the phaser 70 , receives a digital pulse for each revolution of the rotor 2 which is used to give information on the placement of the rotor 2 . Incremental counter 50 also typically includes sensors that give digital pulses for each cog of incremental cam 80 . Information from the phase keyer 40 combined with information from the increment...

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PUM

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Abstract

The invention relates to a method for automatic positioning of a gas turbine rotor. Method for automatically positioning a rotor (2) of a gas turbine (1), the method comprising acquiring data with a control unit (20), and processing the data to bring the rotor (2) to a position according to an HMI (30) desired position. The placement of the rotor (20) is directed to the control unit (20) by means of a phaser (40) comprising a sensor for obtaining digital pulses for each revolution of the phaser cam (70), This digital pulse is used to give information to the control unit (20) about the placement of the rotor (2).

Description

technical field [0001] The invention relates to a method for positioning a rotor of a gas turbine in an accurate and automatic manner. Background technique [0002] During the service life of a gas turbine, maintenance operations are necessary to ensure the correct functioning of the turbine itself. During these periodic operations, controls and inspections are completed, and damaged or worn parts or components are replaced. [0003] The parts of the turbine that suffer the most wear are the turbine blades as they experience mechanical stress at high temperatures and also thermal corrosion caused by the hot gases with which the turbine operates. Therefore, there is a need for periodic inspection of turbine blades to control their integrity and functionality. During planned maintenance operations, in order to be able to inspect the blades of the turbine, it is often necessary to rotate the blades of the turbine, which is done by rotating the entire turbine rotor. This appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D25/34
CPCF01D25/36G05D3/00
Inventor F.斯塔伊里A.哈尔姆斯D.马特斯
Owner ANSALDO ENERGIA IP UK LTD