A moisture loop top corrosion test device

Abstract

The invention provides a top corrosion testing device of a wet gas loop in the high-temperature and high-pressure environment, which is applicable to wet gas top corrosion simulation experiments under actual high-temperature and high-pressure working conditions and mechanism research of corrosion behaviors. The top corrosion testing device comprises a heating kettle, a pipeline circulating system, a heating and heat insulation system, a circulating condensed water tank refrigerating system, a circulating pump, a signal conduction channel, an external control box, a flow state observation window, an external gas supply system, a three-electrode system, an electrochemical work station, a computer and the like. The device has the advantage that the actual working conditions, including a flow state, a flow speed, pressure, temperature and the like of fluid in a pipeline, in the pipeline can be really simulated, so that the actual environment can be simulated to the greatest extent and real electrochemical data is measured. With the adoption of the device provided by the invention, a top corrosion in-situ electrochemical signal test can be carried out on a test sample, and a corrosion mechanism of pipeline steel can also be researched by utilizing a weight loss method. Therefore, the device provided by the invention has very important meanings on the research of a wet gas top corrosion mechanism of the pipeline steel.

Description

technical field [0001] The invention relates to the field of corrosion electrochemistry, in particular to a corrosion electrochemical test device at the top of a wet gas loop under a high temperature and high pressure environment. Background technique [0002] In recent years, as the development of offshore oil and gas fields has become more and more prosperous, many failure accidents have occurred in pipelines transporting oil and gas on the seabed, and top corrosion is a very important part of them. Research on testing has also attracted much attention. However, so far, there are few equipments used to study the wet top corrosion of pipeline steel. Generally, the equipment used to study the top corrosion is the condensation kettle, and the condensation kettle cannot completely simulate the actual working conditions, and there is a gap between the test data and the actual situation; In addition, the electrochemical test in the static atmospheric pressure reaction vessel af...

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Problems solved by technology

However, so far, there are few equipments used to study the wet top corrosion of pipeline steel. Generally, the equipment used to study the top corrosion is the condensation kettle, and the condensation kettle cannot completely simulate the actual working conditions, and there is a gap between the test data and the actual situation; In addition, the electrochemical test in the static atmospheric pressure reaction vessel after the simulation experiment in the condensing kettle cannot obtain the electrochemical corrosion behavior in the top corrosion process under actual conditions.

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