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.
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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...
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