Multiphase flow erosion corrosion test device
A technology of erosion corrosion and test equipment, which is applied in the direction of measuring equipment, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve multiphase flow disturbance, reduce the test accuracy of electrochemical workstation, sample corrosion rate, polarization curve and Electrochemical impedance effects and other issues, to achieve the effect of shortening the experimental cycle
Active Publication Date: 2020-12-11
CHANGZHOU UNIV
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Problems solved by technology
[0004] However, in gas-liquid two-phase flow and gas-liquid-solid three-phase flow, the existence of gas in the test pipeline will cause the disturbance of the multiphase flow, disturb the current stability between the working electrode and the auxiliary electrode circuit, and thus affect the corrosion rate of the sample, extreme It will affect the test results such as chemical reaction curve and electrochemical impedance, which reduces the accuracy of the electrochemical workstation test.
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Embodiment 1
[0035] Such as Figure 1-8 As shown, a multiphase flow erosion corrosion test device includes a slurry tank 1 for containing flushing solids and flushing liquid, an air tank 2 for containing flushing gas, a flushing chamber 3 and a nozzle assembly located in the flushing chamber 3 4. The flushing chamber 3 is located above the slurry tank 1, and the nozzle assembly 4 includes a solid-liquid nozzle 4-1 and a gas nozzle 4-2 fixed to each other;
[0036] The outlet of the slurry tank 1 communicates with the solid-liquid nozzle 4-1 through the feed pipe 5. The feed pipe 5 is provided with a circulation pump 6, and the inner bottom of the flushing chamber 3 is connected to the inlet of the slurry tank 1 through the discharge pipe 7. connected, the feed pipe 5 is provided with a bypass pipe 5-1 communicating with the discharge pipe 7, the feed pipe 5 is provided with a first stop valve 8, and the connection between the feed pipe 5 and the bypass pipe 5-1 Between the first stop valv...
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The invention relates to the technical field of erosion corrosion tests and in particular to a multiphase flow erosion corrosion testing device. The multiphase flow erosion corrosion testing device comprises a slurry tank for accommodating an erosion solid and erosion liquid, a gas tank for accommodating an erosion gas, an erosion chamber and a nozzle assembly positioned in the erosion chamber. The erosion chamber is positioned above the slurry tank. The nozzle assembly comprises mutually fixed solid-liquid nozzle and gas nozzle. The multiphase flow erosion corrosion testing device adopts a mode that a gas flowing out from the gas tank and a liquid-solid two-phase flow ejected from the solid-liquid nozzle are mixed outside a pipe, so the existing problem in the prior art that a gas phase in the pipe can intervene with the testing of an electrochemical workstation; and a circulating pump is skillfully used, so that the erosion solid and the erosion liquid in the slurry tank are uniformly mixed on one hand, and the erosion solid and the erosion liquid in the slurry tank are supplied to a glass tube and the erosion chamber on the other hand.
Description
technical field [0001] The invention relates to the technical field of erosion corrosion tests, in particular to a multiphase flow erosion corrosion test device. Background technique [0002] Erosion corrosion is a metal damage phenomenon caused by relative motion between the metal surface and the corrosive fluid, and is the result of the interaction between erosion and corrosion of the material. According to different media, erosion corrosion can be divided into single-phase flow and multiphase flow, among which multiphase flow is mostly studied as liquid-solid two-phase flow, gas-liquid two-phase flow, and gas-liquid-solid three-phase flow; for the research on erosion corrosion , carrying out experimental research under simulated process conditions in the laboratory is an effective method to obtain the erosion corrosion performance parameters of materials; [0003] At present, the most widely used experimental test methods are weight loss method and electrochemical test m...
Claims
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IPC IPC(8): G01N17/02
CPCG01N17/02
Inventor 杨燕姜志超文闯王树立彭浩平
Owner CHANGZHOU UNIV