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Steam turbine oil acid value nondestructive detection method based on intermediate infrared spectrum

A technology of infrared spectroscopy and non-destructive testing, applied in measuring devices, material analysis through optical means, instruments, etc. program effect

Pending Publication Date: 2021-01-08
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in some data analysis, there is a certain nonlinearity between the spectral factors and the properties sought
In addition, the composition of the sample itself is complex and changeable, interacting with each other, coupled with equipment noise and baseline drift, etc., will also cause non-linearity.
Although partial least squares (PLS) based on factor analysis can correct part of the nonlinearity under certain circumstances, if the nonlinearity obviously exists, it cannot fit a correction model with high predictive ability

Method used

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  • Steam turbine oil acid value nondestructive detection method based on intermediate infrared spectrum
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  • Steam turbine oil acid value nondestructive detection method based on intermediate infrared spectrum

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Embodiment Construction

[0021] In order to better understand the method, the method will be further described in detail below in conjunction with specific examples, but the protection scope of the present invention is not limited to the scope indicated by the examples.

[0022] The detection method of the present invention is based on the combination of infrared spectrum information of steam turbine oil molecules and chemometric methods. For processing, the partial least squares-artificial neural network method is used to establish a model of the relationship between the absorption band and the acid value in the sample spectrum, and finally the infrared spectrum of the turbine oil to be tested is imported into the model, and the value of the turbine oil to be tested is obtained through model analysis. acid value.

[0023] The specific process is as follows:

[0024] 1) Prepare the experimental samples. The acid value sample of the steam turbine oil needs to contain two parts, one part is the operati...

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Abstract

The invention discloses a steam turbine oil acid value nondestructive detection method based on an intermediate infrared spectrum. The steam turbine oil acid value nondestructive detection method comprises the following steps of: acquiring infrared spectrum and acid value data of a steam turbine oil sample, and preprocessing the acquired infrared spectrum by adopting a chemometrics method; establishing a model of a relationship between an absorption wave band and an acid value in a sample spectrogram by adopting a partial least square artificial neural network method; and finally importing theinfrared spectrogram of the steam turbine oil to be detected into the model, and acquiring the acid value of the steam turbine oil to be detected through model analysis. According to the steam turbine oil acid value nondestructive detection method, a detection report of the turbine oil acid value can be obtained without destroying the sample, and turbine oil change and equipment fault analysis are guided.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil detection, and relates to a nondestructive detection method for the acid value of steam turbine oil based on mid-infrared spectroscopy. Background technique [0002] Turbine oil, also known as turbine oil, is an important type of industrial lubricating oil. It mainly plays the role of lubrication, heat dissipation, and sealing during the operation of steam turbines. Its quality directly affects the economy and safety of power plant generator sets. The detection of acid value is of great significance in the acceptance of new oil and the supervision of operating oil. For the acceptance test of new oil, it can reflect the refining level of the lubricating base oil. The lower the acid value, the higher the refining level of the base oil and the better the quality. On the other hand, for operating oil lubricating oil, the acid value indicates the degree of oxidation of the operating oil and is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3577
CPCG01N21/3577G01N2021/3595G01N2201/1296
Inventor 王娟宋庆媛付龙飞刘永洛王腾冯丽苹
Owner XIAN THERMAL POWER RES INST CO LTD
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