1、 Main functions of the device:

Function description: according to military standards, this wind drenching laboratory simulates the harsh weather conditions of outdoor rain or heavy storm rain in nature, and mainly conducts environmental adaptability pre-test for military instrument products. This test is applicable to the test of product performance indicators and quality management under the conditions of heavy rainstorm, wind and rain, sprinkler system, wheel splashing, flushing or violent sea waves when the product may be subject to flushing at different ambient temperatures during transportation, storage or use.

Performance indicators and system composition of Military standard storm testing machine

Model GC-JBLY-1200

Sample restrictions: This testing equipment prohibits the testing of flammable, explosive, and volatile substance samples; Testing for storing samples of corrosive substances, testing for storing organisms, testing and storing samples of strong electromagnetic emission sources

Volume, weight, and size

Nominal internal volume of 12 cubic meters

Pinhole spacing 20 × 20 (unit: mm）

Drip tray size 1000 × 1000 (unit: mm）

The dimensions inside the studio are approximately W2000 × D1300 × H4150 (unit: mm）

Dimensions approximately W5900 × D2250 × H4480 (Highest point) (unit: mm）；

Plan according to the user's site, as shown in the layout diagram

Box structure laboratory wall: 100mm thick, made of cold storage insulation board material, with stainless steel anti rust material pasted inside, can be installed on site

The size of the air duct opening is approximately 1000mm * 1000mm

Laboratory door: double door, door opening size 1500mm wide * 2500m high

Transparent observation windows: 2, embedded in the door, 0.75 * 1m

Outline drawing (reference)

Weight 1350kg

Work noise ≤ 75db measured at a distance of 1 meter in front of the machine and 1.2 meters above the ground

Maximum power 55 KW

Maximum current 68 A

Sample power supply

(This item is optional) 1. Configure DC12V 24V 36V 20A DC power supply

2. Reserved power interface terminals, customers can configure them themselves

3. Install waterproof sockets inside the test chamber, powered by AC 220V 20A

Power supply conditions

And power supply

AC220V single-phase R, N+protective grounding; The allowable voltage fluctuation range is 10%;

The allowable frequency fluctuation range is 50 ± 0.5HZ; TN-S power supply or TT power supply

The grounding resistance of the protective grounding wire is less than 4 Ω

Require users to configure corresponding capacity air or power switches for the equipment at the installation site, and this switch must be independently controlled. When placing powered samples in the equipment use box, please use an external power source for the sample power supply and do not directly use the local power supply;

Execute the standard JJF17-2012 Rain Test Equipment Calibration Specification

Performance pointer

Program I - Technical Parameters and Requirements for Rainfall and Blow Rain Tests (Rain Test)

1. The diameter range of raindrops is 0.5-4.5 mm, the nozzle diameter is ￠ 0.4mm, the distance between drip holes is 20mm × 20mm, and the nozzle design can make the water drip. Needle nozzle rainwater distributor: effective drip area of 1000 × 1000mm, approximately 2000 pinholes, nozzle pressure ≥ 276kpa, 140 or 280L/m2/h, adjustable up to 500L.

2. Wind speed range: The accompanying wind speed can vary from almost no wind to extremely high wind speeds (0-18m/s), with an error of ± 5%. The direction of the wind source relative to the test sample should be able to make the rain change from a horizontal direction to a 45 ° angle and evenly blow on one side of the test sample;

3. Rainfall intensity: 6-20cm/hour (adjustable from 1-3.3mm/min, flow rate controlled by adjusting frequency converter), adjustable and set, continuous rainfall time ≥ 2 hours;

4. Rain exposure time: freely set and automatically controlled within 0-1440 minutes, and can be cycled periodically;

5. Heating range of the test specimen: Heat the specimen to a temperature 10 ℃± 2 ℃ higher than the temperature of the rainwater at the beginning of each rain cycle;

During the experiment, the specimen can be rotated at an adjustable speed of 1-16rpm/min.

Program II - Technical Parameters and Requirements for Strengthening Test (Waterproof Test) 1. The nozzle pressure is ≥ 276kPa, and the raindrop diameter is 0.5-4.5mm; At least one nozzle shall be installed within a surface area of ≤ 0.56m2 that receives rain, at a distance of 48mm from the surface of the test sample;

2. The nozzle is installed at the back and top of the sample on the rotary table. Each side is equipped with two rows of two rows of four nozzles to form a grid spray network. The top is equipped with two rows of two rows of four nozzles to form a grid spray network. The nozzle spacing is 710 × 710mm. The nozzle is a full round spray type, which can be disassembled by threaded connection, and the spray angle is about 60 °; The diameter of the nozzle hole is 1.0mm;

3. Water supply method: Continuous water supply by water pump;

Program III - Technical Parameters and Requirements for Drip Test (Drip Test)

1. The diameter range of raindrops is 0.5-4.5 mm, and the spacing between drip holes is 20mm. Can ensure a flow rate of 280+30L/m2; Water storage and drip rainfall with a test time of ≥ 15 minutes;

2. Drip tray area: 1000 × 1000mm, drip tray height adjustable and controllable;

3. Raindrops can fall evenly, causing all upper surfaces of the sample on the test bench to be simultaneously affected by the water droplets;

4. The height of the drip tray can be adjusted;

5. Water supply: The water pump provides continuous water supply and is controlled by frequency conversion.

The values measured under the environmental conditions of+25 ℃, relative humidity ≤ 85%, and no sample in the test chamber.

Test temperature (RT+10 ℃)~+55 ℃

Before the test, adjust the temperature of the working chamber to: water temperature+10 ℃ (up to+55 ℃)

The wind source of the fan system adopts an axial flow fan, which includes a variable frequency motor, coupling, main shaft, bearing seat, fan blades, air duct and guide vanes. The blades are made of aluminum alloy material, the main shaft is made of SUS stainless steel, the motor insulation level is IP65, and the total pressure is 700Pa.

Using the partition method of the storage room to separately seal the fan for sound insulation and noise reduction. Equipped with water temperature and room temperature display, and an indoor heating device, the rain test can only be conducted when the sample temperature is 10 ℃ higher than the water temperature.

The rainfall blowing device is installed on the upper part of the rainfall blowing channel in the box; The rainfall test is supplied with water from a water tank through a booster pump; The entire rainfall system can be set according to different times and rainfall intensities, and the rainfall is automatically controlled by a fully Chinese LCD touch screen controller.

Effective drip area of drip tank: 1000 × 1000mm, distance between pinholes: 20 × 20mm, the material of the drip tank is rust proof, and the nozzle is easy to replace.

The rain nozzle is installed on the top of the studio with brackets on both sides, which are detachable for installing rain and waterproof nozzles; High quality rain nozzles are selected for rainfall nozzles, which are evenly arranged within the same rainfall range to ensure the same amount of rainfall. The nozzle is a detachable specialized nozzle, and the spray hole can be replaced at any time according to the required aperture of the standard. The spray direction can be adjusted to ensure that the water droplets are evenly sprayed and the flow rate is sufficient.

The direction of the wind source relative to the test sample with a wind speed of 0-18m/s can cause the rain to change from a horizontal direction to a 45 ° angle.

Rainfall intensity of 1.7mm/min can be adjusted and set