Online management method and system for multiple steam turbines important durable member calendar service-life

Abstract

The invention relates to an online calendar lifespan management system for important durable components of a plurality of steam turbines, and is characterized in that a web server is respectively connected with a calculation/application server, a database server and an user browser, wherein, the calculation/application server is connected with the database server, and the database server is respectively connected 1 to N steam turbine data collecting systems and parameter measuring points through external system interfaces. The management method comprises calculating on line the low-cycle fatigue lifespan loss dijk about the important durable components of the 1 to N steam turbines, the maximum low-cycle fatigue lifespan loss dmij during the processes of start, stop and load change, as well as accumulated low-cycle lifespan loss ENij and accumulated creep lifespan loss Etij, confirming the annually-average calendar lifespan loss ey of the durable components of the steam turbines, calculating the residual calendar lifespan RLij of high-temperature durable components, the residual calendar lifespan RLij of lower temperature durable components, and recommending optimizing maintenance measures for a plurality of steam turbines. The invention has the advantages of realizing the online management for the calendar lifespan about the key components of a plurality of steam turbines and achieving the technical effect of utilizing one set of calendar lifespan management system to manage the calendar lifespan of the key components of a plurality of steam turbines.

Description

technical field [0001] The invention relates to an online management method and system for the calendar life of important durable parts of multiple steam turbines, belonging to the technical field of steam turbines. Background technique [0002] The important durable parts of the steam turbine are the rotor, cylinder and valve housing. There are two types of important durable parts of steam turbines. One is the high and medium pressure rotors, high pressure rotors, medium pressure rotors, high pressure inner cylinders, medium pressure inner cylinders, high pressure main steam valves, and medium pressure main steam valves of steam turbines. The other type is the steam turbine low-pressure rotor, which belongs to the low-temperature durable parts of the steam turbine. The low-cycle fatigue life of the important durable parts of the steam turbine is expressed by the number of starts and stops, and the creep life of the important durable parts of the steam turbine is expressed ...

AI Technical Summary

Problems solved by technology

Using the existing technology, one durable part of a steam turbine is equipped with a set of life online management system, and the life management of multiple different important durable parts of multiple steam turbines needs to be equipped with several sets or even more than a dozen sets of calendar life management systems. Inconvenient to maintain

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