Ex-wave plate for hanging protective properties of the shutter is more mature

Civil air defense projects ventilation equipment types used internally complex, the production process is relatively backward means of detection, product quality can not effectively ensure ventilation. In order to regulate the ventilation ventilation protective equipment performance testing, protective equipment to improve product quality, it is necessary to develop a standard set of test bench. Currently, hanging plate proof protective  power transformers  of wave shutter has been more mature, and the ventilation valve on the hanging board performance study was relatively small. In this paper, the shutter mechanism and close the ventilation air flow  air circuit breaker , hanging plate ventilation valve test bench is designed to provide a theoretical basis. Hanging plate valve closed model mainly by the base plate,  mcb circuit breaker , hinged seat and limit housing component. Close valve when hanging panels, new air vents through the hanging plate inside and out diffusion chamber. If the wind gradually increased from 0 to slow the increases to a certain extent from the rear overhang board is placed phenomenon, this time from the air flow is called swing wind; when ventilation rate continues to increase to a certain extent, then hanging plate closes and the the air flow is called close air volume. Put the wind from the air flow volume and turn off the ventilation valves belong performance.