Cooling system and control method of diesel generator set for railway power train

Abstract

The invention relates to a cooling system of a diesel generating set of a railway power car and a control method thereof. The cooling system comprises a shell body, wherein a draught fan and a radiator are arranged in the shell body, the radiator is connected with the diesel generating set through a water inlet pipe and a water outlet pipe, a ventilating device is arranged on the top of the shell body, and air inlets are formed in the lateral side and / or in the bottom of the shell body; the ventilating device comprises a box body, a top air outlet capable of being opened and closed is formed in the top of the box body, a lateral air outlet capable of being opened and closed is formed in the lateral side of the box body, the top air outlet is communicated with the outside of the car through an air duct, and the draught fan is connected with a control device. According to the cooling system of the diesel generating set of the railway power car and the control method thereof, internal circulation and external circulation of cooling air are achieved, internal circulation of the cooling air is achieved at extremely low temperatures in winter, external circulation of the cooling air is achieved during daily normal operation, the problems that the negative pressure in a cooling chamber of the power car is large in a low-temperature environment in winter and the temperature range of cooling liquid during daily operation of the diesel generating set is large are solved, and the situation that the working environment of mechanists is severe is changed.

Description

technical field [0001] The invention relates to a railway generating car, in particular to a cooling system of a diesel generator set of a railway generating car and a control method thereof, and belongs to the technical field of rail vehicle manufacturing. Background technique [0002] During the design process of diesel generator sets and auxiliary systems for international intermodal buses passing through cold regions such as Siberia, there is a problem of how to ensure efficient and economical operation of diesel engines when diesel generator sets work in extremely low temperature environments in winter. At present, the cooling system of the railway generator car controls the water temperature of the diesel engine through a two-speed motor. Under the extremely low temperature operating environment in winter, the cooling system has a large cooling margin, the impact on the power supply of the diesel generator set when the fan is started, the water temperature changes too q...

AI Technical Summary

Problems solved by technology

At present, the cooling system of the railway generator car controls the water temperature of the diesel engine through a two-speed motor. Under the extremely low temperature operating environment in winter, the cooling system has a large cooling margin, the impact on the power supply of the diesel generator set when the fan is started, the water temperature changes too quickly when the fan is started, and the fan During the working process, it is easy to make the temperature of the cooling water too high or too low, which will affect the service life and working efficiency of the diesel generator. In addition, there is a disadvantage that the negative pressure in the cooling room in winter will lead to a bad working environment for the mechanics.

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