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

Detection system for wall thickness and defect of oil gas pipeline

A technology for oil and gas pipeline and defect detection, applied in general control systems, electrical/magnetic thickness measurement, control/regulation systems, etc. The effect of reducing the towing load

Inactive Publication Date: 2005-12-21
SHANGHAI JIAOTONG UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent No. CN 1051086A is the electromagnetic ultrasonic automatic flaw detection technology, because the distance between the excitation coil of the received signal and the measured surface directly affects the measurement accuracy, so it cannot be applied to online detection; although the patent G01N28 / 82 solves the problem of CN 1051086A, it does not involving thickness measurement

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
  • Detection system for wall thickness and defect of oil gas pipeline
  • Detection system for wall thickness and defect of oil gas pipeline
  • Detection system for wall thickness and defect of oil gas pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The preferred embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] The present invention includes a sensor fixing device, 32 sets of circumferential array measuring head components capable of realizing radial coarse adjustment and self-adaptive adjustment of springs, and electronic devices for realizing measurement process control, signal acquisition and data processing, and ambient temperature compensation. control system. The specific description is as follows:

[0018] The overall structure of the detection system of the present invention is as follows: figure 1 , figure 2 As shown, the sensor fixing device is composed of a disc body 1, a disc body connector 3, a bolt 2, a connecting bolt 31, a ball joint connector 32 and a ball joint 33. The two disk bodies 1 and the disk body connector 3 form a whole through the bolt 2 to form a symmetrical structure, and the ball joint 33 is connected to t...

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

An oil and gas pipeline wall thickness and defect detection system consists of a sensor fixing device, 32 sets of circumferential array measuring head components that can realize radial rough adjustment and spring adaptive adjustment, and realize process control, signal acquisition, data processing and environmental temperature. It is composed of a compensated electronic control system. The symmetrical sensor fixing device is evenly distributed with radial adjustment mechanisms according to two spans. The invention adopts the microcomputer control mode in which the program-controlled constant current excitation detection and the axial movement of the device are alternately performed, and the long-distance online detection of the pipe wall circumferential direction and the pipe wall axial direction is simultaneously performed in the magnetic conducting pipe. The electromagnetic force generated by the programmed constant current excitation makes the U-shaped iron core adsorb on the tube wall to form a constant closed magnetic circuit required for the detection. Compared with the permanent magnet excitation, the implementation of the detection process and the axial movement of the device alternately reduces the Resistance to axial movement of the device in the pipe and wear of the measuring head components.

Description

Technical field: [0001] The invention relates to an oil and gas pipeline wall thickness and defect detection system, which is used for detecting the wall thickness and defects of natural gas, coal gas or oil pipelines, and belongs to non-destructive detection technology, sensor technology and robot technology. Background technique: [0002] Oil and gas pipeline transportation occupies an extremely important position in the national economy. The basic requirements for oil and gas pipeline transportation are safety and efficiency. Once a pipeline accident occurs, it will not only cause huge economic losses, but also have serious consequences for society and the environment. The direct and indirect economic losses are huge, and the repair costs are also very high. It is more important to detect new and old pipelines. [0003] At present, there are mainly leakage method, ultrasonic method, eddy current method, electromagnetic ultrasonic method, etc. for the detection of pipe w...

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): G01B7/06G01N27/72G05B19/00
Inventor 颜国正左建勇丁国清张云伟付西光颜德田
Owner SHANGHAI JIAOTONG UNIV
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