Non-intrusive experimental device used for researching underwater bubble plumes

Abstract

The invention discloses a non-intrusive experimental device used for researching underwater bubble plumes. The non-intrusive experimental device comprises a power system, an experimental system and adata collection system; the power system comprises an air compressor and a gas buffer tank which are connected with each other; the experimental system comprises a wave maker, a background plate, a water tank and a steel pipeline arranged at the interior of the water tank; the gas buffer tank is connected with the inlet of the steel pipeline through a gas transportation soft tube, the outlet of the steel pipeline is connected to a gas outlet soft tube and stretches out of the water tank and a leakage hole is formed in the steel pipeline; and the data collection system comprises a high-speed camera and a compact type laser doppler velocimeter. The experimental device can measure upward floating time of the gas, bubble plume dimension and horizontal migration distance, flow and pressure of the gas before after the leakage hole and speed of the gas at any measuring point of the flow field; and the parameters provide verification path for a numerical simulation method and perfect underwater bubble plume theory.

Description

technical field [0001] The invention belongs to the field of oil and gas storage and transportation safety, in particular to a device for studying underwater bubble plume, in particular to a non-interventional experimental device with high reduction degree and good accuracy. Background technique [0002] With the continuous development of natural gas exploration technology, the proven reserves of natural gas resources in my country's coastal waters are increasing day by day. Submarine pipelines play an important role in the development and transportation of offshore natural gas resources, and they need to be characterized by continuous efficiency, safety and stability. However, gas pipelines that have been in the water environment for a long time may leak or even break due to factors such as seawater corrosion, ocean current erosion, fatigue failure, and third-party damage. The leakage of natural gas pipelines will affect the gas supply to the downstream, resulting in a lar...

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Problems solved by technology

Leakage of natural gas pipelines will affect the gas supply to the downstream, resulting in a large waste of resources, and the natural gas leaked into the water will have an adverse impact on the marine environment and endanger the survival of marine life. It will cause fire and deflagration accidents, seriously threatening the safety of offshore operating platforms and staff

[0003] At present, the research on leakage accidents of submarine natural gas pipelines is mainly based on numerical simulation and theoretical calculation, and there is a lack of relevant experimental research, and the numerical model needs to be verified by experiments.

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