Working safety early warning method for ventilation and heat dissipation system of rail transit vehicle-mounted transformer

Abstract

The invention discloses a working safety early warning method for a ventilation and heat dissipation system of a rail transit vehicle-mounted transformer. The working safety early warning method comprises the steps of 1, inputting the air inlet area S and an early warning critical value k of the ventilation and heat dissipation system; 2, monitoring the environment temperature T, the atmospheric pressure P and the air outlet amount Q of the ventilation and heat dissipation system online; 3, calculating to obtain an air volume standard value Qs of the ventilation and heat dissipation system of the rail transit vehicle-mounted transformer through a formula (1) shown in the description; 4, calculating to obtain a working safety risk coefficient G of the ventilation and heat dissipation system through a formula (3) shown in the description; and 5, conducting early warning judgment, specifically, comparing the working safety risk coefficient G with the early warning critical value k, and giving out early warning when the working safety risk coefficient G is greater than the early warning critical value k. The method has the advantages that the required online monitoring quantity is small, the process is clear and simple, the working state of the ventilation and heat dissipation system of the rail transit vehicle-mounted transformer can be effectively evaluated, and early warning judgment is made.

Description

technical field [0001] The invention relates to the field of rail transit safety assessment. More specifically, the present invention relates to a working safety early warning method for the ventilation and heat dissipation system of a rail transit vehicle-mounted transformer. Background technique [0002] Vehicle-mounted transformer is the key equipment of rail transit vehicles, and its service status directly determines the safety and reliability of electric locomotive operation. During the operation of rail transit vehicles, the on-board transformer will emit a lot of heat, which will lead to an increase in the ambient temperature of the equipment. High temperature is the main cause of damage to electronic equipment. Excessive temperature will easily reduce the performance and stability of the equipment, and eventually lead to equipment damage. , affecting the safe operation of the train. Therefore, a heat dissipation system is usually added outside the on-board transfo...

AI Technical Summary

Problems solved by technology

During the operation of rail transit vehicles, the on-board transformer will emit a lot of heat, which will lead to an increase in the ambient temperature of the equipment. High temperature is the main cause of damage to electronic equipment. Excessive temperature will easily reduce the performance and stability of the equipment, and eventually lead to equipment damage. , affecting the safe operation of the train

Therefore, a heat dissipation system is usually added outside the on-board transformer of the vehicle to promote the reduction of the temperature of the equipment. However, other impurities may be mixed with the wind from the external environment into the air duct, which will cause equipment failure in severe cases, and then affect the safe operation of the train.

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