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

A technology for ventilation and heat dissipation, rail transit, applied in transformer/inductor cooling, transformer/inductor components, transformer/inductor noise damping, etc. And other issues

Active Publication Date: 2021-08-20
CCCC MECHANICAL & ELECTRICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0043] It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are conventional methods, and the reagents and materials, if not otherwise specified, can be obtained from commercial sources; in the description of the present invention, The orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention.

[0044] Such as Figure 1-8 A...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/08H01F27/33F04D25/16F04D29/66
CPCH01F27/085H01F27/33F04D25/166F04D29/663F04D29/664Y02T30/00
Inventor 李小明
Owner CCCC MECHANICAL & ELECTRICAL ENG
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