Rain room use:
The rain test is divided into the swing pipe type water test and the sprinkler type water test:
The rain test is suitable for the rain tightness testing of aviation, automobiles, home appliances, external lighting and signal devices, and the protection of automotive lamps and lanterns. The device is equipped with a rain spray system to conduct a water spray test on the top, bottom and left and right sides of the product.
The standard of rain test:
"GB4208-2008 Shell Protection Level"
"GB10485-1989 Basic Environmental Test for Exterior Lighting Devices of Automobiles and Trailers"
"GJB150.8-86 Environmental Test of Military Equipment - Rain Test"
"GJB1508 Rain Test Standard"
Design idea of rain laboratory:
1) The rainproof sealing test device of the rain test laboratory should ensure that water is sprayed on the workpiece from all directions to avoid the occurrence of dead corners and blank areas of rainfall, and to ensure that the water spray pressure meets the requirements;
2) The bracket structure is beautiful and generous while ensuring anti-rust
3) The equipment operation is simple and easy to understand, the parts are repaired and the maintenance is convenient;
Main technical parameters of rain test room, automobile rain test room and rain room:
1) The rainfall intensity at the top is ≥10mm/min
2) The lateral rainfall intensity is ≥6mm/min
3) The water spray area of the roof cover is larger than the vertical projection area of the roof
4) The minimum distance between the nozzle and the outer surface of the vehicle is 620mm, and the minimum distance between the nozzle and the roof is 700mm
The detailed requirements for each part are as follows:
(The minimum spacing state of mobile sprinklers should be able to meet the minimum value in the table below) The spacing requirements for sprinklers at the showered part of the vehicle body (mm) Front windshield 620, rear window 620, side window 620, top 700
Nozzle location and quantity:
1) Evenly install rain spray nozzles on the branch pipes of each spray surface, with a horizontal and vertical spacing of 400mm, to ensure that the tested parts on the surface of the test car body are in the rain area;
2) The branch pipelines on the spray surface are made of five branch brackets on the front, rear, left and right sides and on the top surface, and flow meters and pressure regulating valves are installed on each branch;
3) Number of nozzles: 224 on the front and rear, 656 on the left and right, and 574 on the top cover;
4) The nozzle adopts an adjustable spherical thread nozzle whose water outlet is in the shape of a 60° cone;
Rain test room, automobile rain test room, rain room structure:
1) The rain shower device is a circulating filter system:
It is mainly composed of water pump, automatic pressure regulating valve, water pressure gauge, main pipeline, branch pipeline, branch pipeline, flow meter, throttle valve, nozzle, nozzle frame, nozzle frame driving adjustment mechanism and reservoir. The nozzle and the nozzle frame form five spray surfaces, front, rear, left, right and top, and each nozzle is connected to a branch pipe. A flow meter and a throttle valve are respectively provided at the beginning of the branch pipelines leading to the front spray surface and other spray surfaces. The system pipeline pressure can be set to (150±10) KPa. The external dimensions (determined according to the tested objects) involved in the rain test with each spray surface covered are the tested parts of the largest vehicle 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 there are drains in the middle and on both sides. The water in the drains flows into the sedimentation tank, and is recycled after sedimentation and filtration.
artificial climate laboratory
The artificial climate laboratory, also known as the controllable environment laboratory, simulates the factors such as temperature, humidity, illuminance, PH value, air pressure and gas composition required by the growth environment of plants and organisms, and provides users with an ideal artificial climate experimental environment. It is not limited by natural conditions such as geography and season and can shorten the research period. It can be used for plant germination, seedling, tissue and microorganism cultivation; insect and small animal feeding; BOD determination for water analysis and other purposes artificial climate experiment. Widely used in biological genetic engineering, medicine, agriculture, forestry, environmental science, animal husbandry, aquatic products and other production and scientific research departments.
Artificial climate laboratory structure system:
The artificial climate laboratory consists of three parts: control room, equipment room and environmental laboratory:
The artificial climate laboratory consists of three parts: the control room, the air handling room and the environmental laboratory. The control room is equipped with regulators and probes that control various factors. The regulators indicate the positive definite values of various environmental factors required, and continuously detect the actual values and positive definite values of the environmental laboratory according to the patrol device. The deviation between the air conditioners will automatically send action signals to various actuators (such as heat source, cold source, light source, gas composition control system) for action; the air treatment room is equipped with air filters, heat sources, cold sources, dehumidifiers, Humidifiers and other equipment, these equipment act according to the instructions of the control room regulator; the environmental laboratory is equipped with a point light source and sensing elements for monitoring factors such as light, temperature, humidity, gas composition, etc. The actual value is transmitted to the inspector and transferred to the regulator in the control room for deviation identification. Repeatedly cycling this route makes the actual value in the environmental lab the same as the positive definite value on the regulator. Artificial climate chambers are often used to study the impact of environmental conditions on biological life activities, and can also be used for the cultivation, domestication and breeding of certain organisms. Its scale and controllable conditions are determined according to needs.
Three types of artificial climate laboratories:
According to the different structure types, artificial climate chambers can be divided into three types: sunshine type, high illuminance, and cultivation rack:
The sunshine-type artificial climate chamber is built outdoors, which mainly makes full use of natural light and cooperates with artificial light (the artificial light is only a supplement for rainy and snowy weather). The thematic structure is dominated by a tempered glass house; this climate chamber can grow most plants closest to the natural environment.
Use natural sunlight to fully activate plant photosynthesis.
Simulate natural meteorological conditions and actively control indoor temperature and humidity.
Adjust the indoor light intensity.
The concentration of indoor carbon dioxide is controllable.
Use imported plant growth lights for supplementary light.
External shading system adjusts natural light intensity.
The water shower system reduces the surface temperature of the glass and reduces energy consumption.
Independently set the working mode of the air conditioner. When the indoor temperature requirements change, the control system can change the working mode of the distributed air conditioner unit at any time according to the indoor heat load and outdoor temperature.
The high-intensity artificial climate chamber is built indoors, which is characterized by artificial high-intensity light to meet the needs of high-radiation plant growth. Typical uses of such climate chambers are the cultivation of plants such as rice, corn, tobacco, canola, potatoes, etc.
Provide light according to plant needs.
Imported high-power agronomic lamps, combining light sources according to plant characteristics.
Simulate the sunlight surface light source, improve the uniformity of the light.
The light source is independent from outside the laboratory, reducing indoor heat sources.
The light box is independently exhausted, and the outdoor fresh air cools down, saving energy.
Simulate natural meteorological conditions and control indoor temperature, humidity and light.
The concentration of indoor carbon dioxide is controllable.
The structure of the whole light box instead of a single group of light stands means that it can provide users with a larger experimental area, more experiments, and more results.
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