Work safety warning method for rail transit on-board transformer ventilation and cooling system

Abstract

The invention discloses a working safety early warning method for the ventilation and heat dissipation system of a vehicle-mounted rail transit transformer, which comprises the following steps: step 1, inputting the area S of the air inlet of the ventilation and heat dissipation system, and an early warning critical value k; step 2, online monitoring of the ambient temperature T and atmospheric pressure Strong P, the air volume Q of the ventilation and heat dissipation system; Step 3, calculate the air volume standard value Q of the rail transit vehicle-mounted transformer ventilation and heat dissipation system by formula (1) s , step 4, obtain the work safety risk coefficient G of the ventilation and heat dissipation system through formula (3); step 5, early warning judgment: compare the work safety risk coefficient G with the size of the early warning critical value k, when the work safety risk coefficient G is greater than When the warning critical value is k, an early warning is issued. The invention has the advantages of less online monitoring, clear and simple process, and can effectively evaluate the working state of the ventilation and heat dissipation system of the vehicle-mounted transformer in rail transit, and make an early warning judgment.

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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