Marine low-sulfur oil and heavy oil automatic switching control system

Abstract

The invention provides a marine low-sulfur oil and heavy oil automatic switching control system. The system comprises a first three-way switching valve, a second three-way switching valve, a viscosity / temperature sensor and a controller; low-sulfur oil and heavy oil communicates with an air separator through the first three-way switching valve; the outlet end of the air separator is connected withthe inlet end of the second three-way switching valve; two outlets of the second three-way switching valve are connected with a fuel oil heater and a low-sulfur oil cooler correspondingly; the outletend of the fuel oil heater and the outlet end of the low-sulfur oil cooler communicate with a diesel generator through a manifold pipe; and the viscosity / temperature sensor is further mounted on themanifold pipe. The system has the advantages that according to the design of a marine oil supply system, the controller controls switching of the first three-way switching valve and the second three-way switching valve according to the temperature and viscosity information detected by the viscosity / temperature sensor, the purpose of full-automatic switching of oil products is achieved, the labor intensity of crew is greatly relieved, the equipment cost is low, maintenance is convenient, and the maintenance cost is low.

Description

technical field [0001] The invention relates to the technical field of marine fuel supply, in particular to an automatic switch control system between low-sulfur oil and heavy oil for marine. Background technique [0002] Since July 2010, some countries such as the European Union have required ships passing by in certain sea areas to use low-sulfur fuel oil with a sulfur content not greater than 0.1% m / m to prevent ship sulfur emissions from affecting the atmosphere and marine environment. Therefore, more and more ocean-going ships will use heavy oil and low-sulfur oil at the same time, use heavy oil during normal navigation, and use low-sulfur oil in specific sea areas. However, most marine diesel engines currently have strict requirements on the viscosity of fuel oil, and are particularly sensitive to temperature changes. It is strictly forbidden to change the temperature at a rate greater than 2 degrees per minute during use. The control requirements are strict, and the ...

AI Technical Summary

Problems solved by technology

However, most marine diesel engines currently have strict requirements on the viscosity of fuel oil, and are particularly sensitive to temperature changes. It is strictly forbidden to change the temperature at a rate greater than 2 degrees per minute during use. The control requirements are strict. The traditional method is to manually operate various valves to control, which requires high quality of operators.

Images