High-temperature high-pressure lubricant oil single-liquid-droplet evaporation and ignition device and using method thereof

Abstract

The invention relates to a high-temperature high-pressure lubricant oil single-liquid-droplet evaporation and ignition device and a using method thereof, and belongs to the experimental technical field of evaporation and spontaneous combustion of highly-viscous and easily-coking liquid droplets. A sealed high-pressure outer container of the experimental device is high-pressure environment, and aninternal high-temperature chamber is high-temperature and high-pressure environment, and has a small heating space and high heating efficiency. A liquid droplet suspension device adopts a cross quartzwire method, and utilizes the characteristics of high viscosity of oil droplets to achieve the drop of the oil droplets on a cross quartz wire at a short distance to complete the suspension. The problem that the liquid droplets volatilize in advance after entering the high temperature chamber is solved, and experimental accuracy is improved. A worm gear transmission device is additionally arranged to complete automatic fixed-angle rotation of a quartz wire support to realize automatic exchange of the quartz wire support after the evaporation and spontaneous combustion coking of the oil droplets, a liquid droplet support can be fed in rapidly periodically in high-temperature environment by a lift cylinder, the problem of difficulty in changing the liquid droplet support after the coking ofthe liquid droplet support is solved, the time for each group of experiments is shortened, and the experiments are more accurate and convenient.

Description

technical field [0001] The invention relates to a single-droplet evaporation and ignition device for high-temperature and high-pressure lubricating oil and a method for using the same, belonging to the experimental technical field of evaporation and spontaneous combustion of high-viscosity, easy-to-tar droplets. Background technique [0002] In the past two decades, the thermal efficiency and mechanical efficiency of two-stroke marine engines have been significantly improved, but at the same time, abnormal combustion is often accompanied by high ignition pressure in the engine. The main cause of this abnormal combustion is the spontaneous combustion of lubricating oil (mainly cylinder oil) in the cylinder. The frequency of spontaneous combustion is mainly controlled by ignition delay, which is further divided into physical ignition delay and chemical ignition delay. For macromolecular hydrocarbons, the physical ignition delay accounts for the vast majority of the overall de...

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Problems solved by technology

[0004] In order to solve the deficiencies of the existing technology in the experiment of evaporation and spontaneous combustion of highly viscous and easy-to-tar droplets, the present invention provides a high-temperature and high-pressure single-droplet evaporation and ignition device and its use method, which utilizes the characteristics of high viscosity of oil droplets to realize oil Droplets drop onto the crossed quartz wire at close range to complete the suspension, which solves the problem of premature volatilization of droplets after entering the high-temperature chamber and improves the accuracy of the experiment

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