Full Vehicle Rain Test Automotive Sealing Reliability Test Rain Simulation Equipment

1. Passenger bus rain test as specified in QC/T476-2007 "Limits and Test Methods for Rainproof Sealing of Passenger Buses"

2. GB/T12480-2009

Front rainfall intensity: 12 ± 1 mm/min adjustable

Upper rainfall intensity: 8 ± 1 mm/min adjustable

Side rainfall intensity: 8 ± 1 mm/min adjustable

Bottom rainfall intensity: 8 ± 1 mm/min adjustable

The vehicle's left and right sides, top, bottom, front, and rear—a total of six surfaces.

The top and bottom nozzle axes are perpendicular to the horizontal plane, the front and rear nozzle axes are parallel to the vehicle's longitudinal symmetry plane, and the side nozzle axes are perpendicular to the vehicle's longitudinal symmetry plane.

Pressure gauges and flow meters must be installed on each branch pipe and main pipe. Rainfall intensity must comply with the national standard QC/T 476-2007. Flow meters must be high-quality, domestically produced. The installation locations of flow meters and pressure gauges must comply with national standards, and the pressure gauge range and accuracy must meet the control plan and process requirements.

Each branch pipe must have a drain outlet at the end and a plug installed to ensure a tight seal. The plug should be made of SUS304 stainless steel.

(Pipeline dimensions are subject to actual production.)

1) A vacuum tank (SUS304 stainless steel) is installed at the spray pump inlet. A return pipe is installed at the outlet to regulate the spray pump outlet pressure. A bag filter with a filtration accuracy of 200 microns is also installed.

2) Both the spray pump and the sewage pump in the water supply and drainage piping are reputable brands. One spray pump is used, and one is a backup. The sewage pump has a discharge capacity of at least 15 m³/h.

3) Test water is returned from the floor sink in the spray room or the drain section to the sedimentation tank. After secondary filtration, it is transferred to the reservoir, where it is pumped to the spray mechanism. The reservoir is also connected to an external water replenishment system. If the water level falls below the required level, continuous replenishment is required. The sedimentation tank should be cleaned regularly, and the water in the reservoir should be regularly replaced. The water level is automatically controlled by the system based on a water level monitoring device, and an alarm will be issued in the event of water shortage.