Online controlling method for steam turbine rotator equivalent stress safety margin coefficient

A steam turbine rotor and equivalent stress technology, applied in the field of steam turbines, can solve the problems of large equivalent stress error and affecting the accuracy of the equivalent stress of the steam turbine rotor, etc.
CN100370117CActive Publication Date: 2008-02-20SHANGHAI POWER EQUIP RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI POWER EQUIP RES INST
Publication Date
2008-02-20

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Abstract

The invention relates to an online detecting method on the equivalent stress safe allowance factor of the rotor of turbine, wherein it is characterized in that: it uses artificial nerve network technique to realize the online real-time calculation and online real-time detection and control on said factor; if said factor is lower than preset value, it can control the temperature change rate of main steam, and the load change rate to improve the factor and prolong the service life. If the factor reaches the alarm value, it will alarm, and stop in preset time. The invention can realize quick and accurate online real-time calculation, detection and control.
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Description

technical field

[0001] The invention relates to a method for realizing on-line real-time calculation, on-line monitoring and control of the equivalent stress safety margin coefficient of the steam turbine rotor by using artificial neural network technology, which is applied to the online control of the equivalent stress safety margin coefficient of the steam turbine rotor and the online life of the steam turbine rotor Management belongs to the field of steam turbine technology. Background technique

[0002] In the process of steam turbine startup, shutdown and load change, the steam turbine rotor is unevenly heated or cooled, and the uneven temperature distribution of the steam turbine rotor along the radial direction produces relatively large thermal stress, which leads to an increase in the equivalent stress of the steam turbine rotor, and the safety of the equivalent stress The margin factor is reduced. A relatively small equivalent stress safety margin factor causes rel...

Claims

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