Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Monitoring Method of Internal Corrosion in Gas Transmission Pipeline

A gas pipeline and internal corrosion technology, applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc., can solve problems such as inability to obtain monitoring results, complex equipment structure, and limited use methods, and achieve monitoring operations. The method is flexible and efficient, the measurement result is accurate, and the effect of ensuring accuracy

Active Publication Date: 2011-12-14
SINOPEC SOUTHWEST OIL & GAS +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This in-pipe detection method has obvious defects, the equipment structure is complex and expensive, the detection cycle is long, and there are still many shortcomings in the detection of small-diameter gas pipelines
In terms of gas corrosion monitoring, there are thin-plate overlapping gas corrosion sensors and resistance probe sensors in China, both of which need to place the sensor inside the pipeline to work and set up a corresponding bypass system. The use method is limited and the working range is small.
In addition, thin-plate overlapping gas corrosion sensors can only be used when the gas humidity is high, and reasonable monitoring results cannot be obtained when working under low humidity

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Monitoring Method of Internal Corrosion in Gas Transmission Pipeline
  • Monitoring Method of Internal Corrosion in Gas Transmission Pipeline
  • Monitoring Method of Internal Corrosion in Gas Transmission Pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The method for monitoring internal corrosion of gas pipelines is characterized in that: the following steps are carried out sequentially:

[0028] ① Select the working point of the carbon steel gas pipeline to be measured and perform pretreatment.

[0029] Prepare the nickel plating liquid used for nickel plating, and its components are: 1 part of nickel sulfate, 0.18 part of nickel chloride, and 0.16 part of boric acid.

[0030] Clean the selected working surface on the outer wall of the pipeline with absolute alcohol, then clean it with acetone, and dry it with cold air, and then use the nickel plating solution to plate nickel on the working surface to form a nickel-plated layer on the outer wall of the pipeline to be tested. The detection working surface is to use the nickel-plated detection working surface as an external electrode of the sensor;

[0031] ②The monitoring sensor is pre-assembled completely, and then fixedly installed on the detection working surface ...

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

No PUM Login to View More

Abstract

The invention discloses a monitoring method for internal corrosion of a gas transmission pipeline, which comprises the following steps: cleaning the working surface of the outer wall of the gas transmission pipeline with anhydrous alcohol, cleaning it with acetone, drying the nickel plating with cold wind; The surface is pressed and fixed on the nickel-plated working surface; connect the potentiostatic instrument or special monitor with the output connector of the monitoring sensor; connect the signal output end of the potentiostatic instrument with a data logger or computer to collect and store data To analyze the corrosion of the inner wall of the gas pipeline. The invention is not affected by the humidity of the metal surface, has a wide measurement range, monitors internal corrosion from the outside of the pipeline, has a flexible working mode, does not need a bypass system, and is simple and convenient to operate.

Description

technical field [0001] The invention relates to a method for monitoring the internal corrosion of a gas transmission pipeline, in particular to a method for monitoring the internal corrosion of a gas transmission pipeline for measuring the internal corrosion of a low-carbon steel pipeline. Background technique [0002] In the operation of natural gas, gas pipelines are widely used to transport natural gas. Since the gas pipelines are buried underground for many years, the surrounding environment and the gas transported in the pipelines will cause corrosion to the pipelines. Generally, there are two kinds of external corrosion and pipeline internal corrosion. Not only is it easy to perforate the pipeline due to corrosion and cause gas leakage, which affects the normal production work, but also pollutes the environment and creates serious safety hazards. In order to ensure the safety of gas pipelines, regular corrosion inspections are generally carried out on in-service gas pi...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F17D5/06
CPCY02E60/34
Inventor 张仕强黄彦良王雨生于青郑凤李言涛申洪杨锦林杨强
Owner SINOPEC SOUTHWEST OIL & GAS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com