Experiment Research of New-type Pressure Control Technology on Rapid Train's Cabin

When two rapid trains travel in tunnel or encounter, there will take place enormous pressure wave which makes passengers uncomfortable. In order to release the pressure wave, the new-type pressure control technology which borrow ideas from airplane's cabin pressure control program is analog tested. The test simulation system include simulation cabin, air inlet system, exterior ambient simulation system, indirect pneumatic pressure regulator and data acquisition system. The test content contain the resistance character of pressure regulator, the static test which exterior ambient is in negative pressure and in positive pressure, the dynamic test which the exterior ambient is variable. the result confirms that the computation analysis is correct and demonstrates that the cabin's pressure is the satisfied with the pressure target , also shows that the present technology is practical.