Scope of application:

It is suitable to simulate automobile, train, moving train, high-speed rail and tunnel wind tunnel test. Airflow by fan outlet damper adjustment, absorb air, the inlet section, rectifying section, contraction, stability, temperature measurement section, volume flow measurement section, test section, and then to stable, speed, Long radiuscontraction paragraphs, U differential gauge, pitot tube, inclined pressure measurement, diffuser, segment, segment mouth, fan, fan interface, such as voltage, current sensor, etc.

Main parameters:

Ignition 10s in the vertical direction of the sample surface or the base of the flame that is produced by the specified igniter. The determination of flame spread to three on the sample

Using computer control, Labview device and instrument special development software, the interface is rigorous, the automation degree is high. The inlet and outlet air temperature are measured by the mesh resistance thermometer, and the mean value is calculated by measuring the temperature of 9 points.

Air flow: measured by calibrated pitot tube and tilting microvoltmeter.

Resistance of test elements: a u-shaped differential pressure meter with medium water.

Air pressure: using differential pressure gauge.

Long radius contraction: from 500*500MM square to 300MM diameter.

The measuring speed is 300MM in diameter and 1000MM in length.

Expansion section: the diameter of 300MM is amplified to 550MM in diameter, so that the air flow is discharged into the atmosphere at a smaller speed to reduce the energy loss of airflow.

System reaction time: less than 30 seconds

System zero drift: no drift in 4 hours

Allow users to have an experiment cycle: the longest experiment time is 4 hours, without human intervention (change, adjustment).

The PID control of wind speed can be determined qualitatively: 0-80m/s is given and repeated at any given time, and the variable frequency speed control: 0 ~ 60Hz continuous adjustment, good low-speed performance

The leather trust, differential pressure gauge, temperature, pressure, humidity, atmospheric pressure, voltage, current and other sensors used in wind tunnel have the certificate of provincial metrological verification. Temperature, pressure, humidity, atmospheric pressure, voltage, current and other physical quantities are passed by measurement.