A multi-parameter metal corrosion device for gap flow field

Abstract

The invention relates to a test device of fluid corrosion test, and in particular relates to a metal corrosion test device of a gap flow field. By adopting the metal corrosion test device, the problem of difficult in-situ characterization monitoring of electrochemical corrosion properties under gap flow in the prior art can be solved. The device comprises a metal corrosion electrode, an auxiliary electrode, a reference electrode, a reaction kettle body, a reaction kettle cover, a rotor, a rotating component, a rotating motor, an external circulating water pipe, a circulating water temperature control kettle body and a circulating pump. According to the metal corrosion test device disclosed by the invention, the corrosion evaluation and detection under gap fluid and gap multi-phase flow environments can be achieved, and the electrochemical corrosion property testing and analysis can be achieved by using the metal corrosion electrode, the auxiliary electrode and the reference electrode which are arranged on the surface of a reaction kettle and matching with an electrochemical workstation; and the device can be used for simulating corrosion behaviors of different geometric components such as shield motors, water lubricated bearings and drill rods in the gap fluid environments with different temperatures and flow velocities, so that the test support can be provided for material selection and corrosion lifetime evaluation of relative parts.

Description

technical field [0001] The invention belongs to the technical field of material corrosion detection and relates to a multi-parameter metal corrosion device in a gap flow field. Background technique [0002] Interstitial flow is a typical fluid mode in key components of large-scale equipment in the fields of nuclear power and oil exploration. In key components such as shielded motor shielding sleeves, water-lubricated bearings, turbine blade tips, and drill pipes, the hydraulic characteristics of interstitial fluids have an impact on equipment performance and power consumption. direct impact. Due to the small size of the gap and the fact that the gap is very small in the axial direction, the corrosion characteristics of the metal in the gap flow and the state of the corrosion surface will affect the flow characteristics of the gap fluid, thereby changing the performance of the equipment. Therefore, the corrosion characteristics of metals in the specific environment of inters...

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Problems solved by technology

[0004] The invention provides a metal corrosion device in a gap flow field, which solves the problem of difficult in-situ characterization and monitoring of electrochemical corrosion characteristics under gap flow in the prior art

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