Oil mist concentration detection system based on multi-cylinder oil mist concentration comprehensive judgment alarm

Abstract

The invention relates to an oil mist concentration detection system based on multi-cylinder oil mist concentration comprehensive judgment and alarm. The oil mist concentration detection system comprises a central controller, an alarm module and a judgment module which are mounted in a mounting box, the oil mist sensor probe is used for acquiring oil mist concentration information in a crankcase of the diesel engine and sending the oil mist concentration information; the central controller is used for receiving the oil mist concentration information and sending the oil mist concentration information to the judgment module, so that the judgment module judges whether the current oil mist concentration information exceeds a preset value or not; when the judgment module carries out secondary judgment on the oil mist concentration information acquired by the same oil mist sensor probe and the judgment result of the oil mist concentration information detected by at least one oil mist sensor probe adjacent to the current oil mist sensor probe exceeds a preset value, the oil mist sensor probe is started; and the signal is fed back to the central controller, and the central controller controls the alarm module to give an alarm.

Description

technical field [0001] The invention relates to the technical field of engine crankcase oil mist detection, in particular to an oil mist concentration detection system based on multi-cylinder oil mist concentration comprehensive judgment. Background technique [0002] When the diesel engine is running normally, the oil mist concentration in the crankcase is generally kept in a low concentration range. However, when the connecting rod components (including crosshead guides, bushings, piston bearings, etc.) cause excessive air leakage due to overheating or damage to the piston rings, the oil mist concentration in the crankcase will be seriously high. If the temperature in the crankcase reaches the ignition point or The presence of a fire source can easily lead to an explosion accident. [0003] The existing oil mist concentration detection system includes the oil mist concentration sensor probe installed on the crankcase of the diesel engine, the main engine of the oil mist c...

AI Technical Summary

Problems solved by technology

However, when the connecting rod components (including crosshead guide rails, bushes, piston bearings, etc.) cause excessive air leakage due to overheating or piston ring damage, the concentration of oil mist in the crankcase will be seriously high. If the temperature in the crankcase reaches the ignition point or If there is a fire source, it is very easy to cause an explosion accident

[0003] The existing oil mist concentration detection system includes the oil mist concentration sensor probe installed on the crankcase of the diesel main engine, the main engine of the oil mist concentration detection system and the display alarm device, etc. During use, it was found that the existing non-pipeline oil mist concentration detection system False alarms occur frequently, and often lead to speed reduction or direct parking, which poses a greater safety hazard when sailing or leaving the dock under complex conditions

Moreover, frequent false alarms will paralyze the use and management personnel, thinking that the oil mist concentration detection system is unreliable and a malfunction, and will ignore it when high oil mist actually occurs, leading to accidents

In addition, some simple bypass connections are used to eliminate the alarm signal, causing the oil mist concentration in the crankcase of the main engine to be in a non-monitoring state, which may cause serious damage to moving parts such as the crankshaft and cylinder, or even the danger of crankcase explosion.

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