Simulation experimental pipeline device and simulation experimental method of multi-phase fluid erosion and flow states

Abstract

The invention provides a simulation experimental pipeline device of multi-phase fluid erosion and flow states. The simulation experimental pipeline device comprises a pipeline, a bracket, an erosion resistant storage tank, an erosion resistant pump, a ball valve, an electromagnetic flow meter, a resistance probe, a temperature meter, a pH meter and an oxygen dissolving analyzer, wherein the pipeline comprises an waved pipeline erosion test area and a horizontal pipeline erosion test area. The waved pipeline is simulated through the simulation experimental pipeline device with various inclined angles; the change of erosion rates is recorded in real time by virtue of the resistance probe; an annular sample of which the diameter is the same with the inner diameter of the pipeline is adopted in the horizontal pipeline area. A weight loss method and an electrochemical method are used for monitoring the internal erosion of the pipeline, and the flow states and the multi-phase fluid erosion at an industrial site can be truly simulated, so that the technical problem that the flow characteristic and erosion behavior in a flowing pipeline at an industrial site cannot be truly reflected through indoor dynamic erosion simulation is solved.

Description

technical field [0001] The invention relates to the technical field of petroleum and natural gas engineering, in particular to a pipeline device for multiphase flow corrosion and flow state simulation experiments. Background technique [0002] Pipelines in petroleum, natural gas and chemical industries are usually multiphase flow pipelines in environments containing oil, gas, water, sand and corrosive media. Metal pipelines may suffer from severe gas-liquid two-phase flow corrosion, liquid-solid two-phase flow corrosion, gas-liquid two-phase flow corrosion, Solid multiphase erosion corrosion. The flow state inside the pipeline is closely related to the operation process of the pipeline, and also affects the corrosion behavior and mechanism of the pipeline. [0003] At present, the simulation experiment research of multiphase flow corrosion in oil, gas and chemical industries mainly adopts traditional static experiment method, dynamic experiment method in autoclave, corrosio...

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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to observe the flow state change in the pipeline by designing a transparent PVC experimental pipeline system, to simulate the undulating pipeline by designing different inclination angles, and to record the change of the corrosion rate in real time with a resistance probe; The pipe section adopts a ring-shaped sample with the same diameter as the inner diameter of the pipe, and uses the weight loss method and electrochemical method to monitor the corrosion inside the pipe, which can truly simulate the flow state and multiphase flow corrosion of the industrial site, and solve the problem that the indoor dynamic corrosion simulation cannot truly reflect the industrial environment. Technical issues such as internal flow characteristics and corrosion behavior of on-site flow pipelines

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