Whole Electric Vehicle Passenger Car Water Ingress Rain Spray
Testing Room
Complied Standards & Clauses
This test room is mainly designed and manufactured according to
QC/T476-2007 and QC/T271-2021. And we can customize all kinds of
rain testing room.
Technical Parameters
No. | Project | Content |
| Power supply | AC380V 50Hz 15kW |
| Test Vehicle Specifications | All kinds of passenger cars specified in GB/T 3730.1-2001 Minivans and M1 vehicles with a vehicle length less than 3500mm and
their variants. Model size range: length 2000mm～13700mm, width 1540mm～2500mm,
height 1500mm～3700mm  
|
| Test items | 1. Passenger car rain test specified in QC/T476-2007 "limits and
test methods for rainproof sealing of passenger cars" 2. The rain test of miniature trucks specified in the chapter of
QC/T271-2021 "Test Method for Rainproof Sealing of Minivans" |
| Spray test room | WDH=5.5m×18m×5m, steel structure frame, color steel plate sealing
plate |
| Control room | WDH=2.2m×2.8m×2.5m, steel structure frame, color steel plate
sealing plate |
| Control System | Controlled by Mitsubishi PLC, computer display and operation,
electronic flowmeter collects flow data, pressure sensor monitors
water supply pressure of water pump, each control valve controls
the on-off of water flow in the main pipeline, branch pipeline and
branch pipeline, and the flow regulating valve adjusts the flow in
the pipeline to reach Standard test requirements. Test item
selection, flow display, pressure display value and test time can
all be viewed through the computer interface |
| Test time | 0-99h59min59 s can be preset |
| Test flow | Calculated according to the standard formula (Q=6FN/625 or
Q=3FNS/50), the flow control valve is adjusted, the electronic
flowmeter collects feedback, and the computer displays. Front,
rear, left, right and top each branch pipeline is equipped with a
set of flowmeters |
| Average rain intensity | The front part of the body is 12±1mm/min, the rest of the body is
8±1mm/min |
| Nozzle | The diameter of the nozzle hole is Ф2.5mm, and the end is rounded
by 60°. Front and rear: 70*2 pcs Side: 350*2 pcs Top: 210 pcs Bottom: 210 pcs The number is not less than 1260 pcs |
| Nozzle arrangement | The horizontal and vertical center distance is 400×400mm, and the
test area is covered in a matrix form |
| Spray direction | Vehicle left and right sides, top, bottom, front and rear, a total
of six sides. The top and bottom nozzle axes are perpendicular to the horizontal
plane, the front and rear nozzle axes are parallel to the vehicle
longitudinal symmetry plane, and the two side nozzle axes are
perpendicular to the vehicle longitudinal symmetry plane |
| Nozzle-to-vehicle distance | The bottom nozzle is located 200mm below the ground, and the nozzle
position is fixed. Other nozzles are 700±200mm away from the outer surface of the
body, The branch pipes installed with the nozzles on each side are
modularly fixed to the movable bracket, and the distance between
the spray mechanism on all sides except the bottom surface from the
exterior of the vehicle body can be adjusted to meet the standard
requirements, and it can be matched with vehicles of different
sizes. |
| Nozzle holder | Top movable bracket: can be lifted vertically, driven by electric
hydraulic cylinder Side movable bracket: can be moved left and right, electric
adjustment Front movable stand: manual movement, casters with levelling
support feet Rear bracket: fixed on the rear side of the shower room Bottom bracket: fixed in the groove 0.2m below the ground |
| Water pressure | 150±10kPa |
| Sprinkler piping | Main circuit Φ150mm Branch pipe Φ102 mm Branch pipeline (spray pipe array) Φ40 (Pipeline size is subject to actual production) |
| Water supply pump | Stainless Steel Centrifugal Pump |
| Water circulatory system | The water is returned from the ground water tank of the spray room
to the sedimentation tank, and is filtered to the storage tank by
the secondary filter, and the water is pumped by the water pump to
the spray mechanism. At the same time, the water reservoir is
connected to an external water replenishment mechanism, but when
the water level is lower than the requirement, it needs to be
replenished continuously. The sedimentation tank should be cleaned
regularly, and the water reservoir should be changed regularly. |
| Concrete foundation | Load-bearing foundation, the bottom nozzle of the spray room is
symmetrically arranged in the center, and a long groove is set in
the middle: length, width and depth = 14m × 0.7 m × 0.3 m |
| Pool | It is divided into sedimentation tank, filter tank and water
storage tank, which are arranged behind the spray room |
| Leak record | Manual records, input into the computer can be printed into reports |
| Vehicle entry and exit | Manual entry and exit |
| Laboratory area | WDH=about 8m×22m×5.2m |
Equipment Overview
1. System overview
This test room is mainly designed and manufactured according to
QC/T476-2007 and QC/T271-2021. It is used to evaluate the ability
of doors, windows, orifice covers of passenger cars and minivans,
as well as luggage or cargo compartments to prevent rainwater from
entering the compartment, and to verify their ability to prevent
rainwater from entering the compartment. Rain sealing performance.
The rain shower room simulates the outdoor natural rain state to
set the spray rain detection conditions, and conduct the spray test
on all surfaces of the motor vehicle that may be exposed to rain.
(Seepage, slow drip, drip, fast drip, flow) are recorded and scored
to confirm the water tightness of outdoor vehicles and implement
structural improvements to the parts that may leak.
The rain test room uses PLC intelligent central integrated control,
computer interface display and operation, test data can be formed
into a report and printed, and the report can be edited according
to the actual test report. The parameters are set through the
computer interface, the spray test process is fully automatic, and
the side and top spray mechanisms are electrically adjusted to
match various specifications of vehicles. It is the first choice of
reliability equipment for third-party testing institutions and
factory laboratory departments.
2. Equipment principle and structure
Equipment principle:
The PLC is used to control the frequency converter to change the
water supply of the booster pump to the pipeline, so that the water
supply pressure and flow can meet the standard requirements. The
front, rear, left, right and top rain surfaces of the sprinkler can
be adjusted to match the rain test of passenger cars and minivans
of different sizes.
Equipment structure:
The automobile rain test room mainly includes five components:
spray room and control room, spray system (including electric
adjustment mechanism), water replenishment system, water
circulation system, and electronic control system. As shown in
figure below:
