Natural gas station ground industrial pipeline internal corrosion detection technology

A technology for industrial pipelines and natural gas, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., to achieve the effect of reducing the detection range, improving operation efficiency, and reducing operation safety risks

Inactive Publication Date: 2018-11-16
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can improve the coverage rate, detection rate and operation efficiency of the existing natural gas industrial pipeline int

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A process for detecting internal corrosion of ground industrial pipelines in natural gas stations, comprising the following steps:

[0028] a. Collect the basic data of pipelines in natural gas stations, and divide pipelines into long straight pipe sections, short straight pipe sections, elbows, tees, reducers, confined space pipe sections and high-altitude pipe sections;

[0029] b. The corrosion detection of long straight pipe sections is carried out by using the detection method combining magnetic flux leakage detection, process analysis and ultrasonic B / C scan;

[0030] c. Use digital ray and ultrasonic B / C scanning detection methods to carry out corrosion detection of elbows, tees, reducers and short straight pipes;

[0031] d. Carry out corrosion detection of pipe sections in confined space and high-altitude pipe sections by using B / C scan combined detection method.

[0032] For "confined space pipe sections and high-altitude pipe sections", the combined detectio...

Embodiment 2

[0043] An internal corrosion detection process for ground industrial pipelines in natural gas stations, covering long straight pipe sections, short straight pipe sections, elbows, tees, reducers, confined spaces and high-altitude pipe sections in natural gas stations; the detection process is simple and easy to operate. Combination method of long straight pipe corrosion detection including magnetic flux leakage detection, process analysis and ultrasonic B / C scan; elbow, tee, reducer and short straight pipe corrosion detection combined with digital ray and ultrasonic B / C scan Combined method; B / C scan combination method for corrosion detection in confined spaces and high-altitude pipe sections.

[0044] The combined method for corrosion detection of long straight pipe sections combining magnetic flux leakage detection, process analysis and ultrasonic B / C scan includes:

[0045]1. The detection procedure of the combination method for corrosion detection of the long straight pipe...

Embodiment 3

[0057] A process for detecting internal corrosion of ground industrial pipelines in natural gas stations, specifically comprising:

[0058] The first step is to collect the basic data of the pipeline in the natural gas station, and divide the pipeline into long straight pipe section, short straight pipe section, elbow, tee, reducer pipe, confined space pipe section and high-altitude pipe section.

[0059] In the second step, the corrosion detection of long straight pipe sections is carried out by using the combination of magnetic flux leakage detection, process analysis and ultrasonic B / C scan. (1) Detection procedure: 100% quick scan of the straight pipe section is completed by the magnetic flux leakage detection method, and the suspicious position of the pipe wall thickness reduction is determined; then the suspicious position of the wall thickness reduction of more than 20% is scanned by ultrasonic B / C Carry out fine scanning; the corrosion sensitive position of the straigh...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a natural gas station ground industrial pipeline internal corrosion detection technology. The method comprises the following steps: a) collecting basic data of an internal pipeline of a natural gas station, dividing the pipeline to a long straight tube segment, a short straight tube segment, a bend, a three-way joint, a tapered pipe, a restricted space pipe segment, and a high hollow tube segment; b) employing a combination detection mode of magnetic flux leakage detection, technical analysis and ultrasonic B/C phase sweeping to perform corrosion detection of the long straight tube segment; c) employing a combination detection mode of digital ray and ultrasonic B/C phase sweeping to perform the corrosion detection of the bend, the three-way joint, the tapered pipe and the short straight tube segment; and d) employing a combination detection mode of B/C phase sweeping to perform the corrosion detection of the restricted space pipe segment and the high hollow tubesegment. The technology is capable of increasing the detection coverage rate of the internal corrosion of the current natural gas industrial pipelines, detection rate and work efficiency, solves thedetection visualization problem, and is suitable for multiple-specification pipe segments and pipe fittings.

Description

technical field [0001] The invention relates to a method for detecting internal corrosion of an in-service industrial pipeline on the ground of a natural gas station, in particular to an internal corrosion detection process of an industrial pipeline on the ground of a natural gas station, belonging to the field of non-destructive testing. Background technique [0002] Natural gas stations include gas gathering stations, processing plants, compressor stations, distribution stations, shale gas platforms, etc. Different production and transportation processes, gas characteristics and structural characteristics often cause the medium in industrial pipelines in natural gas stations to contain varying degrees of Accompanying substances such as hydrogen sulfide, carbon dioxide, acidic substances, water, mineral salts, etc., will cause chemical corrosion and electrochemical corrosion, which will reduce the strength of the pipeline and even cause leakage failure. [0003] According t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N17/00G01N29/04G01N29/06
CPCG01N17/00G01N29/04G01N29/0654G01N29/069G01N2291/023G01N2291/0289G01N2291/262
Inventor 喻建胜何莎宋日生王文韬骆吉庆赵琪月王小梅喻婷胡燕王凯朱祥军
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap