Cabin cabinet energy-saving system heat exchange box and ship fuel oil preheating system

Abstract

The invention relates to the technical field of ship fuel oil preheating, and particularly relates to a cabin cabinet energy-saving system heat exchange box and a ship fuel oil preheating system, andthe problem that the oil temperature nearby a suction port is too low and the cold starting and pumping of the delivery pump are difficult existing in the existing 'small isolation cabin' form ship fuel oil preheating system are relieved. The cabin cabinet energy-saving system heat exchange box comprises an oil injection pipe and an oil pumping pipe; at least part of the input end of the oil injection pipe is positioned in the suction end of the oil pumping pipe; and a heating coil sleeves the input end of the oil injection pipe. According to the cabin cabinet energy-saving system heat exchange box and ship fuel oil preheating system, the viscosity of the fuel oil near the oil injection pipe is reduced, the conveying resistance of the oil pumping pipe is reduced, a conveying system can normally work when the conveying system is started, the phenomenon that the initial moment resistance of the starting of the delivery pump is too large and the work load of the delivery pump is too largeto start the delivery pump due to too low fuel oil temperature in the oil injection pipe is avoided, the heat exchange efficiency is improved, and the operation cost is reduced.

Description

Technical field [0001] The invention relates to the technical field of ship fuel preheating, in particular to a heat exchange box of a tank energy-saving system and a ship fuel preheating system. Background technique [0002] In the ship's fuel delivery system, fuel needs to be delivered from the storage tank to the settling tank. The fuel in the storage tank is generally heavy fuel oil, and its viscosity varies greatly with temperature. The higher the temperature, the lower the viscosity. For example, a certain heavy fuel oil has a viscosity of 380 cSt at 50°C and close to 20000 cSt at 0°C. The high viscosity results in high resistance when the delivery pump sucks fuel, which increases power consumption and even fails to pump. Therefore, it is necessary to preheat the fuel to a certain temperature to reduce the viscosity before pumping. At present, the traditional heating method of operating ship’s heavy oil is to arrange heating coils 2’ in the storage tanks 1’ on both sides o...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a tank energy-saving system heat exchange box and a ship fuel oil preheating system, so as to alleviate the low oil temperature near the suction port and the failure of the delivery pump in the existing "small compartment" form of ship fuel oil preheating system. Technical issues with cold start pumping difficulties

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