Experimental device and experimental method suitable for oil and gas pipeline damage under multiple lightning strokes

A technology of oil and gas pipelines and experimental devices, which is applied in the direction of measuring devices, measuring device casings, and parts of electrical measuring instruments. It can solve the problems of not being able to simulate natural lightning strikes and pipeline ablation well, and achieve good data support.

Pending Publication Date: 2021-12-03
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently published patents are mainly about the damage characteristics of single-component A-wave lightning current to metal pipelines, which cannot simulate the impact of natural lightning strikes well, and single-component C-wav

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
  • Experimental device and experimental method suitable for oil and gas pipeline damage under multiple lightning strokes
  • Experimental device and experimental method suitable for oil and gas pipeline damage under multiple lightning strokes
  • Experimental device and experimental method suitable for oil and gas pipeline damage under multiple lightning strokes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] combine Figure 1 to Figure 4 , an experimental device suitable for damage to oil and gas pipelines under multiple lightning strikes, including a multi-waveform impulse current generator 1, an experimental platform 2, a temperature measurement system 3, and a control and measurement system 4.

[0041] The multi-waveform impulse current generator is electrically connected with the control and measurement system, and the pipeline sample 5 is fixed on the experiment platform, and the multi-waveform impulse current generator can discharge to the pipeline sample.

[0042] The multi-waveform impulse current generator can emit three single-component lightning current waveforms, and can combine the three single-component lightning current waveforms into a multi-component lightning current waveform, which can realize the simulation of multi-process natural lightning strikes.

[0043] The three single-component lightning current waveforms are A wave, B wave and C wave respectivel...

Embodiment 2

[0057] An experimental method applicable to oil and gas pipeline damage under multiple lightning strikes, adopting a kind of experimental device applicable to oil and gas pipeline damage under multiple lightning strikes as described in Example 1, the experimental method comprises the following steps:

[0058] Step 1: According to the experimental requirements, connect the instrument, turn on the control panel, turn on the power of the multi-waveform impulse current generator, and check whether the circuit is connected accurately and intact, and whether the grounding state is good;

[0059] Step 2: Fix the pipeline sample on the experimental platform through the fixture, and ground one end of the pipeline sample, fix the discharge electrode and install the ignition wire;

[0060] Step 3: Set up the thermal imaging camera so that the field of view of the thermal imaging camera is facing the center of the back of the pipe sample, and adjust the observation parameters of the therma...

Embodiment 3

[0067] The experimental method involved in the present invention is described below for a real experimental process example. This experiment is expected to carry out the impact experiment of the first return stroke current (i.e. the A wave of the single-component lightning current waveform) with a current amplitude of 120kA. Experimental samples It is the cutting sample of the uncoated metal pipe of model X70, the sample size is 15mm*13mm, the thickness is 8mm, and the number is X70-7#.

[0068] Step 1: Check whether there is any abnormality in each device. If there is no abnormality, connect the circuit of the multi-waveform impulse current generator, turn on the control panel, turn on the power of the multi-waveform impulse current generator, and check whether the circuit of the multi-waveform impulse current generator is connected correctly. , whether the grounding status is good.

[0069] Step 2: Fix the experimental sample numbered X70-7# on the experimental platform thro...

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
Login to view more

Abstract

The invention provides an experimental device and an experimental method suitable for oil and gas pipeline damage under multiple lightning strokes. The experimental device comprises a multi-waveform impulse current generator, an experimental platform, a temperature measurement system and a control and measurement system. The multi-waveform impact current generator is electrically connected with the control and measurement system; a pipeline sample is fixed on the experimental platform; the multi-waveform impact current generator can discharge to the pipeline sample; the temperature measurement system can measure the temperature of the pipeline sample; and the control and measurement system controls the multi-waveform impact current generator to discharge. According to the experimental device and experimental method suitable for the oil and gas pipeline damage under the multiple lightning strokes of the invention, a lightning stroke damage simulation experiment can be carried out on oil and gas pipeline damage under through a single-component lightning current waveform and a combined multi-component lightning current waveform,laboratory simulation of damage characteristics of the oil and gas pipeline by multi-process natural lightning stroke is realized for the first time, and measurement of temperature rise of the back surface of the pipeline sample in the experiment process is realized; and the simulation experiment provides excellent data support for research of lightning stroke on pipeline damage mechanisms and damage characteristics.

Description

technical field [0001] The invention relates to the field of lightning strike damage simulation experiments for oil and gas pipelines, in particular to an experimental device and an experiment method suitable for damage to oil and gas pipelines under multiple lightning strikes. Background technique [0002] Pipeline transportation undertakes most of the transportation of crude oil and natural gas, and plays an important role in economic development, social stability and national defense construction. Lightning strikes can cause destructive behaviors such as rupture, perforation, and coating ablation of pipelines, resulting in oil and gas leakage and pipeline stoppage. Lightning strikes are one of the important causes of pipeline accidents. At present, most of the relevant researches on lightning current impact experiments at home and abroad are based on aluminum alloy and other materials, and the medium between the electrode and the sample is air. There is still a lack of re...

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): G01R31/16G01R31/12G01R31/14G01R1/04G01R1/28G01N25/22G01N27/92
CPCG01R31/16G01R31/1263G01R31/14G01R1/0425G01R1/28G01N25/22G01N27/92
Inventor 张长秀高剑刘璇刘宝全毕晓蕾姜辉刘娟
Owner CHINA PETROLEUM & CHEM CORP
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