Visualization experiment system and method for measuring representation contact angle under high temperature and high pressure environments

Abstract

The invention discloses a visualization experiment system and method for measuring a representation contact angle under high temperature and high pressure environments. The visualization experiment system is characterized by comprising an air distributing device, a testing device, a sampling device, a vacuum device, a pressure regulating device, an optical imaging device and a monitoring device, and mainly consists of the equipment such as an air compressor, a high pressure gas cylinder, a gas pressurizer, a high pressure buffer container, a reducing valve, a mechanical pressure gauge, a hightemperature and high pressure visual container, a pressure transmitter, a one-way control valve, a micrometeor high pressure plunger pump, a cold light source, a vacuum pump, a vacuum buffer container, a temperature controller, a condenser, a back pressure valve, a CCD camera, an image analyzer and the like. The measurement of the contact angle under high temperature and high pressure environments, even in a super-critical state of water, can be realized, and the system is particularly applicable to infiltration behavior research of water on a metallic surface under high temperature and high pressure environments. The visualization experiment system has the advantages of high working condition parameters, wide application range, convenient and flexible operation, long service life, convenience in expansion and modification and the like.

Description

technical field [0001] The present invention relates to surface technology, supercritical CO 2 Research fields related to surface wettability, such as geological storage technology, power plant with boiling heat transfer as the core, heat exchange equipment and heat transfer enhancement in thermal control system, especially when it involves water under high temperature and high pressure environment, even in supercritical environment Experimental study of wettability on metal surfaces. Background technique [0002] Wettability is one of the most important surface properties of solid materials. Contact angle (i.e. static contact angle) is the main parameter that directly characterizes surface wettability. The research and regulation of the wettability of solid surfaces plays a very important role in practical industrial applications, especially superhydrophilic / hydrophobic surfaces have broad application prospects, such as the self-cleaning function of superhydrophobic surfa...

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Problems solved by technology

[0004] However, due to the high temperature and high pressure experimental conditions, the design and manufacture of the experimental equipment has brought great difficulties, especially when the water reaches the supercritical state, it will also face problems such as severe oxidation and corrosion.

In China, there is no experimental system and method suitable for studying the change law of the contact angle of water on the metal surface under high temperature and high pressure environment or even under supercritical environment.

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