Use of rain room:

The rain test is divided into pendulum pipe shower test and sprinkler shower test:

The rain test is suitable for the rain tightness test of aviation, automobile, home appliance, external lighting and signal device and automobile lamp shell protection. The device is equipped with a rain spraying system, and the top, bottom and left and right sides of the product are tested.

Rain test its standard:

GB4208-2008 Shell Protection Grade

"GB10485-1989 Basic Environmental test for external lighting Devices of Automobiles and Trailers" "GJB150.8-86 Environmental Test for Military equipment - Rain Test"

GJB1508 Rain Test Standard

Rain laboratory design idea:

1) The rainproof sealing test device of the rainproof test room should ensure that the workpiece is sprayed with water from all directions, avoid the dead Angle of spraying water and the rain blank area, and ensure that the spray pressure meets the requirements; 2) The bracket structure is beautiful and generous while ensuring rust prevention;

3) Equipment operation is easy to understand, parts repair, easy maintenance; Main technical parameters of rain room, car rain room, rain room :1) the rainfall intensity at the top ≥10mm/min;

2) Lateral rainfall intensity ≥6mm/min;

3) the water spraying area of the roof cover is greater than the vertical projection area of the roof;

4) The minimum distance between the sprinkler and the outside surface of the car is 620mm, and the minimum distance between the sprinkler and the roof is 700mm;

Detailed requirements for each part are as follows:

(The minimum spacing state of the mobile sprinkler should be able to meet the minimum value in the following table); Body spray nozzle spacing requirements (mm); Front air window 620, rear window 620, side window 620, top 700;

Nozzle layout and number:

1) Install rain nozzles evenly on the branch pipes of each spray surface, and the horizontal and longitudinal spacing of the nozzles is 400mm to ensure that the tested parts on the surface of the test vehicle are in the rain area; 2) The spray surface branch pipes are made into five branch frames before, after, left, right and top, and flowmeters and pressure regulating valves are installed on each branch;

3) Number of nozzles: 224 on the front, back and side, 656 on the left and right sides, 574 on the top;

4) The nozzle adopts an adjustable spherical thread nozzle with a 60° cone shape;

Rain test room, car rain test room, rain room structure :1) The rain device is a circulation filtration system:

It is mainly composed of water pump, automatic pressure regulating valve, water pressure gauge, main pipe, branch pipe, flow meter, throttle valve, nozzle, nozzle frame, nozzle frame driving adjustment mechanism and reservoir. The nozzle and the nozzle frame constitute the front, back, left and top five spray surfaces, and each nozzle is connected with the branch pipeline. The flowmeter and throttle valve are arranged respectively at the starting end of the branch pipe leading to the front spray surface and leading to other spray surfaces. The system line pressure can be set to ((150±10)KPa. Each spray surface including cover rain test involved in the dimensions (according to the inspected material) of each part of the largest model, the spray surface is mobile to adapt to the changes in the shape and size of the vehicle.

2) Ground structure:

The ground is a reinforced concrete structure, and the middle and two sides are provided with a ditch, the water of the ditch flows into the sedimentation tank, and is recycled after precipitation filtration.