Method and device for determining corrosion rate of bottom of storage tank
A corrosion rate and storage tank technology, which is applied in the direction of material analysis, instruments, and materials analysis using sonic emission technology, can solve problems such as poor accuracy, and achieve the effect of solving poor accuracy.
Inactive Publication Date: 2018-04-17
PETROCHINA CO LTD
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[0005] The embodiment of the present application provides a method and device for determining the corrosion rate at the bottom of the storage tank, which solves the technical problem of poor accuracy in determining the corrosion rate at the bottom of the storage tank existing in the existing method, and achieves the effective use of acoustic emission signals The technical effect of accurately and efficiently determining the corrosion rate at the bottom of the storage tank
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[0049] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0050]Considering that most of the existing methods use a steel plate similar to the bottom of the storage tank to simulate the bottom of the storage tank, conduct a corrosion test on the steel plate, and measure the reduction in the thickness of the steel plate within a certain period of time through a thickness gauge to predict the real ...
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The embodiment of the application provides a method and a device for determining the corrosion rate of the bottom of a storage tank. The method comprises: acquiring the working condition parameters ofthe target storage tank; establishing a storage tank model of the target storage tank according to the working condition parameters of the target storage tank; by utilizing the storage tank model, determining a fitting relationship between an acoustic emission signal and the corrosion rate through multiple corrosion experiments; acquiring acoustic emission signal data of the target storage tank,and determining the corrosion rate of the bottom of the storage tank according to the acoustic emission signal data of the target storage tank and the fitting relationship between the acoustic emission signal and the corrosion rate. According to the solution, since the storage tank model approximating the target storage tank is first established, then the accurate fitting relationship between theacoustic emission signal and the corrosion rate is determined through the storage tank model and the acoustic emission signal data of the target storage tank is utilized to determine the corrosion rate of the bottom of the target storage tank according to the above fitting relationship, the technical problem existing in conventional methods that the accuracy of determining the corrosion rate of the bottom of a storage tank is poor is solved.
Description
technical field [0001] The present application relates to the technical field of oil and gas production and storage, in particular to a method and device for determining the corrosion rate at the bottom of a storage tank. Background technique [0002] In specific oil and gas production, storage tanks are often used to store certain liquids. Such as oil. Most of these liquids are corrosive to a certain extent and will gradually cause corrosion to the storage tank. Therefore, it is very important to obtain the corrosion situation of the storage tank and understand the corrosion rate of the storage tank for production safety. Due to the needs of production, the volume of the above-mentioned storage tanks is often very huge, and it is difficult to move them mostly. Therefore, how to effectively and accurately measure the corrosion rate at the bottom of the storage tank is a problem that plagues people. [0003] At present, in order to measure the corrosion rate of the bottom...
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IPC IPC(8): G01N29/14
CPCG01N29/14G01N2291/0232G01N2291/0234G01N2291/02854G01N2291/2695
Inventor 赵永涛刘文才张增晓孙文勇胡家顺周亚楠孙秉才
Owner PETROCHINA CO LTD
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