Steam turbine rotor digital twin construction method and monitoring system

Abstract

The invention provides a steam turbine rotor digital twin construction method. Another technical scheme of the invention is to provide a steam turbine rotor digital twin monitoring system. The steam turbine rotor digital twin construction method adopts a digital twin technology, and comprises the steps of: firstly, establishing a two-dimensional rotor twin model, establishing a digital twin consistent with entity characteristics of a steam turbine rotor through adopting a node expansion technology, and mastering the state of the steam turbine rotor comprehensively, thereby achieving the technical effects of improving the reliability and safety of the steam turbine rotor and ensuring long-period safe operation of the steam turbine. According to the steam turbine rotor digital twin construction method and the steam turbine rotor digital twin monitoring system provided by the invention, an artificial intelligence and space expansion cloud chart construction technology is adopted, reconstruction of the two-dimensional digital twin of the steam turbine rotor, three-dimensional expansion of the model and rapid display and monitoring of a temperature field, a stress field and a displacement field are achieved online, and monitoring of the states of the steam turbine rotor is achieved.

Description

technical field [0001] The invention relates to a method for constructing a steam turbine rotor digital twin and a monitoring system, and belongs to the technical field of steam turbines. Background technique [0002] The high-pressure rotor, medium-pressure rotor and low-pressure rotor of the steam turbine are the core components of the steam turbine. The steam turbine rotor rotates at high speed and the working conditions are harsh. Once a problem occurs, the downtime will be long and the economic loss will be huge. Since the rotor is in a high-speed rotating state during the operation of the steam turbine, online measuring points cannot be installed. The traditional technology mainly detects the state of the rotor indirectly by installing measuring points on the inner cylinder wall, and faces the technical problem of being unable to effectively grasp the state of the steam turbine rotor. Contents of the invention [0003] The purpose of the present invention is to estab...

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Problems solved by technology

[0002] The high-pressure rotor, medium-pressure rotor and low-pressure rotor of the steam turbine are the core components of the steam turbine. The steam turbine rotor rotates at high speed and the working conditions are harsh. Once a problem occurs, the downtime will be long and the economic loss will be huge

Since the rotor is in a high-speed rotating state during the operation of the steam turbine, online measuring points cannot be installed. The traditional technology mainly detects the state of the rotor indirectly by installing measuring points on the inner cylinder wall, and faces the technical problem of being unable to effectively grasp the state of the steam turbine rotor.

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