Experimental device for jet etching simulation and electrochemical test of high-temperature high-pressure loop
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A high temperature and high pressure, test experiment technology, applied in the field of electrochemistry, can solve problems such as lack of
Active Publication Date: 2011-07-13
CHINA NAT OFFSHORE OIL CORP +3
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Therefore, when studying the erosion corrosion mechanism under dynamic conditions, the in-depth research on the high temperature and high pressure erosion corrosion behavior, law and mechanism is affected due to the lack of high temperature and high pressure erosion corrosion experimental devices and devices for measuring high temperature and high pressure electrochemical signals.
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[0009] refer to figure 1 , 2 , which is a high-temperature and high-pressure fluid erosion simulation experiment and an electrochemical test experimental device provided according to the above-mentioned technical scheme. Open the autoclave upper cover 2 and remove the nozzle 25, fix the processed sample 24 on the sample holder 33, use the polytetrafluorobolt 32 to fix the sample holder 33 on the holder tray 34, and the sample 24 passes through the copper spring 35 is connected with the copper rod 9 to form the working electrode in the three-electrode system, and the nozzle 25 is installed. Pour a certain volume of dielectric solution into the autoclave 31, and open the liquid outlet 14 in the circulation loop 10 at the same time to drain the gas in the device. The liquid level of the medium solution should be higher than the upper surface of the sample 24. Put on the lid of the autoclave 2. Gas N was introduced from the gas inlet 1 of the autoclave 2 After deoxygenation fo...
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Abstract
The invention relates to an experimental device for the jet etching simulation and electrochemical test of a high-temperature high-pressure loop, which belongs to the field of electrochemistry and is particularly applied to the simulation of scouring corrosion conditions of complex parts such as elbows, T joints and the like in pipelines for collecting and delivering petroleum, natural gases and the like to perform high-temperature high-pressure multiphase fluid pipeline part scouring corrosion simulation experiments and perform high-temperature high-pressure fluid scouring corrosion in-situ electrochemical signal tests under scouring condition. The device consists of an autoclave, a heating and heat preservation system, a loop water inlet, a three-electrode system, pipeline connecting flanges, a circulation loop, a high-temperature high-pressure fluid flow meter, a control valve, a fluid outlet, a regenerating pump, a circulating cooling system, a temperature measurement system, a loop water outlet, a spray nozzle, a sample fixture, a control cabinet, a signal transduction path, an external electrochemical workstation and an external high pressure gas cylinder. The device can well simulate the scouring corrosion conditions of a fluid medium in a gas pipeline and test electrochemical signals such as polarization curves, AC impedance and the like of working electrodes under high speed jet condition, and is significant for researches on high-temperature high-pressure fluid scouring corrosion behaviors, rules and mechanisms.
Description
technical field [0001] The invention belongs to the field of electrochemistry, and relates to an experimental device for studying the erosion and corrosion behavior, law and mechanism of metal materials under high-temperature and high-pressure corrosion medium under the condition of high-speed spraying. It is suitable for the research on the erosion and corrosion behavior of complex components such as pipeline elbows and tees in high-temperature and high-pressure fluid media, especially for simulating the erosion and corrosion of complex components such as elbows and tees in oil and gas collection and transportation pipelines , to carry out the simulation experiment of erosion corrosion of pipeline components conveying high temperature and high pressure multiphase fluid, and to conduct the in situ electrochemical signal test of the erosion corrosion of high temperature and high pressure fluid under the condition of erosion. Background technique [0002] High-temperature and ...
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