Experimental device and method for measuring CO2 pipeline decompression wave propagation velocity

Abstract

The invention discloses an experimental device and method for measuring CO2 pipeline decompression wave propagation velocity. The experimental device comprises an experimental loop, wherein an inlet of the experimental loop is connected with a CO2 injection system, an outlet of the experimental loop is connected with a double-rupture-disk control device, a data acquisition system is installed on the experimental loop, and the CO2 fluid pressure and the temperature variation process along with the time in a pipeline are acquired by virtue of the data acquisition system under the instantaneous decompression working condition of the experimental loop. By adopting the experimental device and method, the decompression wave propagation velocity can be safely and accurately measured. The manual control on the CO2 pipeline decompression process can be realized, and the CO2 pipeline decompression wave at different states such as a supercritical state, a liquid state, a gas state and the like can be measured. By adopting the experimental device and method, the detection on the CO2 pipeline leakage and the safety control to the pipeline crack advance are facilitated.

Description

technical field [0001] The invention discloses a method for measuring CO 2 Experimental device and method for pipeline decompression wave propagation velocity. technical background [0002] With the increase of greenhouse gas emissions, the impact of the greenhouse effect on human life and production is becoming more and more obvious. Carbon capture and storage (CCS) is considered to be an effective way to reduce carbon dioxide emissions. As an important link, pipeline transportation cannot be ignored. Due to the long-distance transport of CO 2 During the process, the pipeline needs to pass through various complex terrains and environments. Factors such as harsh environment and man-made damage may cause pipeline perforation and leakage, and then cause ductile fracture of the pipeline. The primary issue for the control of ductile fracture growth is to obtain the decompression characteristics of the fluid during the leak, so that the magnitude of the local stress driving ...

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Problems solved by technology

This method costs a lot, and the cost of an experiment is as high as tens of millions of yuan.

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