Visual dust explosion propagation/blockage small-scale testing device

1Control method:

1.1Computer wireless monitoring:

Wireless transmission of control parameters and test data, human-machine separation, ensuring the personal safety of test personnel. The test device automatically sprays dust and ignites according to the set parameters, automatically collects flame temperature and stores it in a data file, and draws flame temperature/Time curve, data can be transferred toEXCELFurther analysis and processing will be conducted.

1.2 Manual control:

By simulating a keyboard, manual dust spraying and ignition, data collection and storage, container cleaning, and other operations can be performed, and data files can be read into a computer for analysis and processing.

2Structure and main configuration:

2.1Explosive container: square pipe, volume3.6 LMaximum work pressure:2MPaThe material isS30408Stainless steel)

2.2Pipeline length: total length1000mm

2.3The cross-section of the pipeline is square, with inner side length60mm

2.4Optical system: The front and rear sides of the pipeline are transparentHigh strength tempered glassVisual Area: Long900mm*wide60mm,The window surface is strictly parallel and pressure resistant2MPa.

2.5Test location: The left and right sides of the square pipeline areS30408Stainless steel, on the left side1/4height sum3/4Install one temperature sensor at each of the two height positions,on the right1/3height sum2/3Install explosion suppression system interfaces at two different heights.

2.6Ignition position: from the bottom100mmThere is a pair of ignition electrode mounting holes at the location.

2.7Safety protection: A large-diameter fire-resistant and pressure relief device is installed at the top of the pipeline, which has the function of fire-resistant and pressure relief.

2.8Dual channel configuration:

通道1Dust control system

Configure volume150mlThe dust storage tank and high-speed injection valve have a maximum working pressure of:1MPaThe dust pressure can be adjusted through a testing and analysis system.

通道2Explosion suppression system

Configure volume50mlThe explosion suppressant storage tank (powder)/Gas and high-speed injection valve, maximum working pressure:1MPaThe injection pressure can be adjusted through a testing and analysis system.

3Synchronous control and multi-channel data acquisition system:

configuration6Channel data acquisition system, set control parameters, the experimental device automatically sprays dust and ignites according to the set parameters, and automatically collects dataflame temperatureAnd store it in a data file. automatic drawingflame temperature/timeCurve, data can be transferred toEXCELFurther analysis and processing will be conducted.

3.1Flame temperature detection range:0～1200℃ Resolution:1℃ precision0.25%FS

configuration2Support high-speed flame temperature sensor.

3.2Data sampling interval:0.2msMaximum sampling time:6S；

4Test conditions:

4.1Initial pressure: local atmospheric pressure

4.2Initial temperature: room temperature

4.3Pressure of dust storage tank:0～1.0 MPa

4.4Pressure of explosion suppressant storage tank:0～1.0 MPa

5, Point Fire: Electric spark energy generator, remote wireless control ignition and detonation.

5.1Range of ignition energy adjustment:1～3000mj

5.2Adjustable ignition energy accuracy:1mj

5.3The ignition electrode is detachable

6External device driver: The external device synchronization triggering function module can synchronously start external high-speed cameras, shadowgraphs, and other external devices.

7Cooling method: natural cooling

8Workstation: Laptop (user provided)

9Electricity Source:220 V±10％AC 50Hz±2Hz Power: ＜2500W

10Working environment:

Ambient temperature10℃～40℃

ambient humidity:30％～80％RH