Cylinder sleeve cooling water system and method for low-speed diesel engine for dual-fuel ship

Abstract

The invention discloses a cylinder sleeve cooling water system and method for a low-speed diesel engine for a dual-fuel ship. The cylinder sleeve cooling water system comprises a temperature control valve, a circulating pump, an electromagnetic valve, two check valves, a cylinder cover water outlet temperature sensor and a cylinder sleeve water outlet temperature sensor, wherein the cylinder coverwater outlet temperature sensor and the cylinder sleeve water outlet temperature sensor are used for monitoring the water outlet temperature of a cylinder cover and the water outlet temperature of acylinder sleeve in real time respectively, and transmitting the water outlet temperatures to the temperature control valve to realize automatic control and adjustment of the temperature of cooling water, so that a cooling water cavity of the cylinder sleeve can be kept at a proper temperature, cold corrosion of the cylinder sleeve is avoided, and the cooling water supply requirements of the low-speed diesel engine for the dual-fuel ship in two different operation modes, namely a fuel oil mode and a fuel gas mode, are met. According to the fuel oil mode and the fuel gas mode of a main engine, the temperature of the cooling water is automatically controlled and adjusted, so that a cooling cavity of a combustion chamber is automatically adjusted to be kept at a proper temperature, the problemof cold corrosion of the cylinder sleeve is solved, and the requirements of the dual-fuel main engine for the cooling water in the two different operation modes are met.

Description

technical field [0001] The invention relates to a marine low-speed diesel engine, in particular to a cylinder liner cooling water system and method for a dual-fuel marine low-speed diesel engine, belonging to the technical field of marine diesel engines. Background technique [0002] In recent years, in order to control the emission of greenhouse gases in the shipping industry and improve the energy efficiency of ships, International Maritime Affairs has issued a series of strict rules, which put forward higher requirements on the emission and fuel consumption of marine main engines. For this reason, the WINGD type marine low-speed diesel engine has newly introduced a dual-fuel main engine, which operates separately in fuel mode and gas mode to reduce emissions and reduce operating costs. With the rapid development of marine low-speed diesel engine technology, new technological innovations have been carried out in each system of the main engine, but the performance of the or...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a cylinder liner cooling water system and method for a dual-fuel marine low-speed diesel engine, which can realize automatic control of the cooling water temperature according to the operating mode of the main engine (fuel mode or gas mode), Effectively solve the problem of cold corrosion of high-power dual-fuel marine low-speed diesel engine cylinder liners, so as to meet the requirements of cooling water supply in two different operating modes of dual-fuel main engines

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