Analysis method for optimizing gas turbine overhaul and maintenance scheme

A technology of gas turbine and analysis method, which is applied in the direction of data processing application, prediction, calculation, etc., to achieve the effect of overcoming unreasonable settings

Inactive Publication Date: 2015-08-19
SHANGHAI NENGCE GAS TURBINE CO LTD
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method that can effectively solve unreasonable situations such as "over-maintenance" and "under-maintenance", and can improve the operation reliab

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  • Analysis method for optimizing gas turbine overhaul and maintenance scheme
  • Analysis method for optimizing gas turbine overhaul and maintenance scheme
  • Analysis method for optimizing gas turbine overhaul and maintenance scheme

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[0114] The overhaul of gas turbines is expensive. As the hot end part, the blades are the key components of gas turbines. Long-term operation under severe conditions such as high temperature, high pressure, and corrosive media is a key factor restricting the performance and life of gas turbines, and maintenance is very expensive. In gas turbines It occupies a relatively large proportion in the cost of major and medium repairs.

[0115] Since the gas turbine does not operate completely at full load, and the overhaul period of the gas turbine is considered according to the full load, there is a certain room for extension of the overhaul period, which can reduce the overhaul cost. In order to quantify the extended time of the overhaul period, this patent adopts the method of quantifying the life of the hot end parts of the gas turbine to calculate the overhaul period of the gas turbine. Since high temperature blades are the limiting factor for the life of gas turbines, it is feas...

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Abstract

The invention provides an analysis method for optimizing a gas turbine overhaul and maintenance scheme. The method is characterized by comprising the steps of (1) carrying out equipment initialization, (2) forming a maintenance data history library and establishing a system availability analysis model and a system security analysis model through the maintenance data history library, (3) carrying out FMECA which is failure mode, effects and criticality analysis on each part of a gas turbine through an availability influence importance rate and a security influence importance rate, (4) determining a maintenance project and a maintenance working type, (5) making a maintenance plan, (6) executing the maintenance plan, and (7) evaluating a maintenance effect and carrying out FMECA again through the maintenance effect evaluation and equipment fault record. According to the method, the unreasonable conditions of 'over maintenance' and 'less maintenance' can be effectively solved, the gas turbine operation reliability can be improved and the cost is greatly saved, and the problem of the unreasonable overhaul cycle of the gas turbine running in a low load is overcome.

Description

technical field [0001] The invention relates to the field of gas turbine maintenance, in particular to an analysis method for an optimized gas turbine maintenance plan that can well solve the ubiquitous "under-maintenance" and "over-maintenance" phenomena. Background technique [0002] At present, domestic gas turbines for power generation and natural gas pipelines are basically produced abroad due to technical limitations. For the maintenance and repair of gas turbines, it is generally divided into different maintenance levels according to the running time of the gas turbine, which is the regular maintenance method provided by the gas turbine manufacturer. This kind of maintenance program is specified by foreign manufacturers based on years of operating experience abroad. This plan does not take into account the actual operation of gas turbines in China and the risks in equipment operation. After years of operation, it is found that the following problems are prone to occu...

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Application Information

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IPC IPC(8): G06Q10/04
Inventor 李松波陈宁宁
Owner SHANGHAI NENGCE GAS TURBINE CO LTD
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