A Safety Monitoring System for Marine LNG/Diesel Dual Fuel Engine

Abstract

The invention discloses a marine LNG / diesel oil dual-fuel engine safety monitoring system. A central control room control cabinet serves as a core of an overall system, an industrial personal computer in the central control room control cabinet is connected with a programmable logic controller, a fuel gas alarming controller, an LNG air storage tank communication module, a thermocouple collecting module and a serial port relay module which are arranged in an on-site control cabinet through a USB-to-RS485 converter. The programmable logic controller in the on-site control cabinet is connected with a rotating speed sensor, a temperature sensor, a pressure sensor, a flame detector and an interlocking gas valve. The fuel gas alarming controller module is connected with a fuel gas detector. The LNG air storage tank communication module is connected with a gas tank pressure and liquid level sensor. The thermocouple collecting module is connected with an air cylinder exhaust temperature sensor. A real-time and accurate safety monitoring data report can be provided, analysis and treatment on the LNG / diesel oil dual-fuel engine system in the later period are facilitated, and the safety monitoring system can be conveniently used for engines in different types and different monitoring schemes.

Description

technical field [0001] The invention relates to ship safety monitoring technology, in particular to a safety monitoring system for a marine LNG / diesel dual fuel engine. Background technique [0002] Due to the severe environmental pollution caused by the extensive use of fossil fuels and the increasingly tense energy structure, clean energy has begun to attract more and more attention from international organizations, industries, and scientific research institutions. Among them, the application of LNG / diesel dual-fuel engines in ships is becoming more and more popular. Due to the unique physical and chemical properties of natural gas, there are many safety hazards in this engine. At present, domestic and foreign research on LNG / diesel dual-fuel engines mainly focuses on power performance, economy and combustion characteristics. There is relatively little research on safety monitoring for dual-fuel engines. As ships using natural gas become more and more popular, safety mon...

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Problems solved by technology

[0003] At present, the research on the safety monitoring system of marine LNG / diesel dual-fuel engines has just started. The monitoring items on marine engines are relatively scattered, and the monitoring logic is relatively simple. The integration of the system and the construction of the entire system network structure have not been achieved, which is not conducive to operators. Real-time monitoring and management of the entire dual-fuel engine related equipment

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