Diesel generator low temperature start preheating system

Abstract

The invention discloses a preheating system for low-temperature starting of a diesel generator. The preheating system for low-temperature starting of the diesel generator comprises the diesel generator and a fuel heater, and further comprises a cylindrical heat pipe. The cylindrical heat pipe is formed by surrounding an inner-layer cylindrical metal wall surface and an outer-layer cylindrical metal wall surface; a sealed cavity is arranged between the inner-layer cylindrical metal wall surface and the outer-layer cylindrical metal wall surface; a working medium is filled in the cavity; the inner-layer cylindrical metal wall surface is used as a condensing surface of the cylindrical heat pipe; the lower part of the outer-layer cylindrical metal wall surface is an evaporating surface of theheat pipe; the diesel generator is installed in the cylindrical heat pipe; and the fuel heater is arranged on the evaporating surface on the outer side of the cylindrical heat pipe, and provides heatfor a phase change of the working medium located in the cylindrical heat pipe. According to the preheating system for low-temperature starting of the diesel generator provided by the invention, high-efficient phase change and heat transfer of the working medium in the cylindrical heat pipe are fully utilized for applying heat produced by fuel combustion of the fuel heater to improving temperatureof a diesel generator body and a working space, so that the problem that the diesel generator of an electricity generation cabin of an Antarctic science investigation platform cannot be normally started at low temperature is solved.

Description

technical field [0001] The invention relates to a low-temperature start-up preheating system for a generator, in particular to a low-temperature start-up preheating system for a diesel generator. Background technique [0002] The Antarctic region is a treasure land that has not been fully developed and utilized so far on the earth. Scientific investigations in Antarctica have proved that the Antarctic region contains extremely rich mineral resources (coal, iron, oil), marine biological resources and fresh water resources. play a pivotal role in development. However, the low temperature and low pressure environment in the Antarctic region has brought great difficulties to scientific investigation, astronomical observation and resource exploitation. The annual average temperature in Antarctica is about -20°C, the highest point in DomeA is -58.5°C, and the lowest is -77°C to -85°C. The air in the Antarctic region is thin, with only 0.5 atmospheres. [0003] The Antarctic sci...

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Problems solved by technology

Although the electric preheating method using electric heating rods directly inserted into the diesel circulation loop for heating has high heating efficiency and is easy to use, it cannot adapt to the conditions of the lack of electricity in Antarctica.

Install the heating wire in the intake pipe of the diesel generator. Although the device that directly preheats the intake air does not consume oxygen and does not pollute the intake air, it will consume too much battery power and is not suitable for large-displacement diesel generators and diesel generators. The case of frequent start and stop

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