A ventilation filter device for rail transit

Abstract

The present invention disclosed a ventilation filter device for rail transit, including two or more ventilated filter plates arranged from the outside to the inside to the inside.A variety of ventilation filtration departments are arranged on the ventilation filter plate. The ventilation filtering part of the two adjacent ventilation filter plates is staggered to form a tortuous airflow channel.The airflow buffer mezzanine to complete the ventilation filtration.The present invention has the advantages of simple structure, convenient production, low cost, can take into account efficient ventilation and efficient filtering, and avoid maintenance.

Description

technical field [0001] The invention mainly relates to the field of rail transit equipment, in particular to a ventilation filter device for rail transit. Background technique [0002] With the development of society, rail transit vehicles have extended in all directions, especially domestic railroads have spread all over the country. As we all know, when electrical equipment is working, the transformers and reactors installed in the products are all heating devices, which generate a lot of heat. The failure rate of electrical products will increase exponentially with the increase of ambient temperature, and the service life will decrease exponentially with the increase of ambient temperature. Due to the limitation of installation space, electromagnetic components such as transformers and reactors in electrical equipment adopt natural cooling design, and interact with the air outside the cabinet through cooling holes to improve heat dissipation performance. The following t...

AI Technical Summary

Problems solved by technology

Moreover, when the vehicle is running, the cabinet body will be under negative pressure, which will cause a large amount of dust or rain and snow to be sucked into the cabinet body through the heat dissipation holes, resulting in device burnout, affecting the normal operation of electrical equipment, making maintenance costs high, and in severe cases even Affect the safe operation of the train

[0004] (2) Poor cooling performance

In order to achieve filtering, some products can only reduce the size and number of heat dissipation holes, which in turn leads to insufficient heat dissipation of electromagnetic components such as transformers and reactors in electrical equipment, poor heat dissipation, and equipment overheating, resulting in device burnout and affecting The normal operation of electrical equipment makes the maintenance cost high, and even affects the safe operation of the train in severe cases

[0005] (3) Difficult to maintain

However, the existing products are just not easy to maintain and need to be cleaned regularly, which increases maintenance costs

For example, a louver panel design in the prior art, when the vehicle is driving in the winter wind and snow weather in Northeast China, rain, snow, sand and dust enter the cabinet through the louver hole, because the local temperature is low, the rain, snow and sand and dust cannot be discharged from the bottom in time Cabinet

If it is not maintained in time, rain, snow and dust will gradually accumulate in the device. When the snow melts into water, wet sand and mud will be formed, which will cause the insulation performance of the device to decline, and eventually cause the device to burn out.

Images